feat: sqlalchemy TypeDecorators for arcaea enums

Add play result score lower limits

pyproject.toml

@@ -10,10 +10,8 @@ description = "Manage your local Arcaea score database."
 readme = "README.md"
 requires-python = ">=3.8"
 dependencies = [
-  "beautifulsoup4==4.12.2",
   "SQLAlchemy==2.0.20",
   "SQLAlchemy-Utils==0.41.1",
-  "Whoosh==2.7.4",
 ]
 classifiers = [
   "Development Status :: 3 - Alpha",

requirements.txt

@@ -1,4 +1,2 @@
-beautifulsoup4==4.12.2
 SQLAlchemy==2.0.20
 SQLAlchemy-Utils==0.41.1
-Whoosh==2.7.4

src/arcaea_offline/calculate/__init__.py

@@ -1,8 +0,0 @@
-from .b30 import calculate_b30, get_b30_calculated_list
-from .score import (
-    calculate_constants_from_play_rating,
-    calculate_play_rating,
-    calculate_score_modifier,
-    calculate_score_range,
-    calculate_shiny_pure,
-)

src/arcaea_offline/calculate/b30.py

@@ -1,24 +0,0 @@
-from decimal import Decimal
-from typing import Dict, List
-
-from ..models.scores import ScoreCalculated
-
-
-def get_b30_calculated_list(
-    calculated_list: List[ScoreCalculated],
-) -> List[ScoreCalculated]:
-    best_scores: Dict[str, ScoreCalculated] = {}
-    for calculated in calculated_list:
-        key = f"{calculated.song_id}_{calculated.rating_class}"
-        stored = best_scores.get(key)
-        if stored and stored.score < calculated.score or not stored:
-            best_scores[key] = calculated
-    ret_list = list(best_scores.values())
-    ret_list = sorted(ret_list, key=lambda c: c.potential, reverse=True)[:30]
-    return ret_list
-
-
-def calculate_b30(calculated_list: List[ScoreCalculated]) -> Decimal:
-    ptt_list = [Decimal(c.potential) for c in get_b30_calculated_list(calculated_list)]
-    sum_ptt_list = sum(ptt_list)
-    return (sum_ptt_list / len(ptt_list)) if sum_ptt_list else Decimal("0.0")

src/arcaea_offline/calculate/score.py

@@ -1,66 +0,0 @@
-from dataclasses import dataclass
-from decimal import Decimal
-from math import floor
-from typing import Tuple, Union
-
-
-def calculate_score_range(notes: int, pure: int, far: int):
-    single_note_score = 10000000 / Decimal(notes)
-
-    actual_score = floor(
-        single_note_score * pure + single_note_score * Decimal(0.5) * far
-    )
-    return (actual_score, actual_score + pure)
-
-
-def calculate_score_modifier(score: int) -> Decimal:
-    if score >= 10000000:
-        return Decimal(2)
-    if score >= 9800000:
-        return Decimal(1) + (Decimal(score - 9800000) / 200000)
-    return Decimal(score - 9500000) / 300000
-
-
-def calculate_play_rating(constant: int, score: int) -> Decimal:
-    score_modifier = calculate_score_modifier(score)
-    return max(Decimal(0), Decimal(constant) / 10 + score_modifier)
-
-
-def calculate_shiny_pure(notes: int, score: int, pure: int, far: int) -> int:
-    single_note_score = 10000000 / Decimal(notes)
-    actual_score = single_note_score * pure + single_note_score * Decimal(0.5) * far
-    return score - floor(actual_score)
-
-
-@dataclass
-class ConstantsFromPlayRatingResult:
-    # pylint: disable=invalid-name
-    EXPlus: Tuple[Decimal, Decimal]
-    EX: Tuple[Decimal, Decimal]
-    AA: Tuple[Decimal, Decimal]
-    A: Tuple[Decimal, Decimal]
-    B: Tuple[Decimal, Decimal]
-    C: Tuple[Decimal, Decimal]
-
-
-def calculate_constants_from_play_rating(play_rating: Union[Decimal, str, float, int]):
-    # pylint: disable=no-value-for-parameter
-
-    play_rating = Decimal(play_rating)
-
-    ranges = []
-    for upper_score, lower_score in [
-        (10000000, 9900000),
-        (9899999, 9800000),
-        (9799999, 9500000),
-        (9499999, 9200000),
-        (9199999, 8900000),
-        (8899999, 8600000),
-    ]:
-        upper_score_modifier = calculate_score_modifier(upper_score)
-        lower_score_modifier = calculate_score_modifier(lower_score)
-        ranges.append(
-            (play_rating - upper_score_modifier, play_rating - lower_score_modifier)
-        )
-
-    return ConstantsFromPlayRatingResult(*ranges)

src/arcaea_offline/calculate/world_step.py

@@ -1,174 +0,0 @@
-from decimal import Decimal
-from typing import Literal, Optional, Union
-
-
-class PlayResult:
-    def __init__(
-        self,
-        *,
-        play_rating: Union[Decimal, str, float, int],
-        partner_step: Union[Decimal, str, float, int],
-    ):
-        self.__play_rating = play_rating
-        self.__partner_step = partner_step
-
-    @property
-    def play_rating(self):
-        return Decimal(self.__play_rating)
-
-    @property
-    def partner_step(self):
-        return Decimal(self.__partner_step)
-
-
-class PartnerBonus:
-    def __init__(
-        self,
-        *,
-        step_bonus: Union[Decimal, str, float, int] = Decimal("0.0"),
-        final_multiplier: Union[Decimal, str, float, int] = Decimal("1.0"),
-    ):
-        self.__step_bonus = step_bonus
-        self.__final_multiplier = final_multiplier
-
-    @property
-    def step_bonus(self):
-        return Decimal(self.__step_bonus)
-
-    @property
-    def final_multiplier(self):
-        return Decimal(self.__final_multiplier)
-
-
-AwakenedIlithPartnerBonus = PartnerBonus(step_bonus="6.0")
-AwakenedEtoPartnerBonus = PartnerBonus(step_bonus="7.0")
-AwakenedLunaPartnerBonus = PartnerBonus(step_bonus="7.0")
-
-
-class AwakenedAyuPartnerBonus(PartnerBonus):
-    def __init__(self, step_bonus: Union[Decimal, str, float, int]):
-        super().__init__(step_bonus=step_bonus)
-
-
-AmaneBelowExPartnerBonus = PartnerBonus(final_multiplier="0.5")
-
-
-class MithraTerceraPartnerBonus(PartnerBonus):
-    def __init__(self, step_bonus: int):
-        super().__init__(step_bonus=step_bonus)
-
-
-MayaPartnerBonus = PartnerBonus(final_multiplier="2.0")
-
-
-class StepBooster:
-    def final_value(self) -> Decimal:
-        raise NotImplementedError()
-
-
-class LegacyMapStepBooster(StepBooster):
-    def __init__(
-        self,
-        stamina: Literal[2, 4, 6],
-        fragments: Literal[100, 250, 500, None],
-    ):
-        self.stamina = stamina
-        self.fragments = fragments
-
-    @property
-    def stamina(self):
-        return self.__stamina
-
-    @stamina.setter
-    def stamina(self, value: Literal[2, 4, 6]):
-        if value not in [2, 4, 6]:
-            raise ValueError("stamina can only be one of [2, 4, 6]")
-        self.__stamina = value
-
-    @property
-    def fragments(self):
-        return self.__fragments
-
-    @fragments.setter
-    def fragments(self, value: Literal[100, 250, 500, None]):
-        if value not in [100, 250, 500, None]:
-            raise ValueError("fragments can only be one of [100, 250, 500, None]")
-        self.__fragments = value
-
-    def final_value(self) -> Decimal:
-        stamina_multiplier = Decimal(self.stamina)
-        fragments_multiplier = Decimal(1)
-        if self.fragments == 100:
-            fragments_multiplier = Decimal("1.1")
-        elif self.fragments == 250:
-            fragments_multiplier = Decimal("1.25")
-        elif self.fragments == 500:
-            fragments_multiplier = Decimal("1.5")
-        return stamina_multiplier * fragments_multiplier
-
-
-class MemoriesStepBooster(StepBooster):
-    def final_value(self) -> Decimal:
-        return Decimal("4.0")
-
-
-def calculate_step_original(
-    play_result: PlayResult,
-    *,
-    partner_bonus: Optional[PartnerBonus] = None,
-    step_booster: Optional[StepBooster] = None,
-) -> Decimal:
-    ptt = play_result.play_rating
-    step = play_result.partner_step
-    if partner_bonus:
-        partner_bonus_step = partner_bonus.step_bonus
-        partner_bonus_multiplier = partner_bonus.final_multiplier
-    else:
-        partner_bonus_step = Decimal("0")
-        partner_bonus_multiplier = Decimal("1.0")
-
-    result = (Decimal("2.45") * ptt.sqrt() + Decimal("2.5")) * (step / 50)
-    result += partner_bonus_step
-    result *= partner_bonus_multiplier
-    if step_booster:
-        result *= step_booster.final_value()
-
-    return result
-
-
-def calculate_step(
-    play_result: PlayResult,
-    *,
-    partner_bonus: Optional[PartnerBonus] = None,
-    step_booster: Optional[StepBooster] = None,
-) -> Decimal:
-    result_original = calculate_step_original(
-        play_result, partner_bonus=partner_bonus, step_booster=step_booster
-    )
-
-    return round(result_original, 1)
-
-
-def calculate_play_rating_from_step(
-    step: Union[Decimal, str, int, float],
-    partner_step_value: Union[Decimal, str, int, float],
-    *,
-    partner_bonus: Optional[PartnerBonus] = None,
-    step_booster: Optional[StepBooster] = None,
-):
-    step = Decimal(step)
-    partner_step_value = Decimal(partner_step_value)
-
-    # get original play result
-    if partner_bonus and partner_bonus.final_multiplier:
-        step /= partner_bonus.final_multiplier
-    if step_booster:
-        step /= step_booster.final_value()
-
-    if partner_bonus and partner_bonus.step_bonus:
-        step -= partner_bonus.step_bonus
-
-    play_rating_sqrt = (Decimal(50) * step - Decimal("2.5") * partner_step_value) / (
-        Decimal("2.45") * partner_step_value
-    )
-    return play_rating_sqrt**2 if play_rating_sqrt >= 0 else -(play_rating_sqrt**2)

src/arcaea_offline/calculators/__init__.py

@@ -0,0 +1,2 @@
+from . import world
+from .play_result import PlayResultCalculators

src/arcaea_offline/calculators/play_result.py

@@ -0,0 +1,105 @@
+from decimal import Decimal
+from math import floor
+from typing import Tuple, TypedDict, Union
+
+from arcaea_offline.constants.play_result import ScoreLowerLimits
+
+
+class PlayResultCalculators:
+    @staticmethod
+    def score_possible_range(notes: int, pure: int, far: int) -> tuple[int, int]:
+        """
+        Returns the possible range of score based on the given values.
+
+        The first integer of returned tuple is the lower limit of the score,
+        and the second integer is the upper limit.
+
+        For example, ...
+        """
+        single_note_score = 10000000 / Decimal(notes)
+
+        actual_score = floor(
+            single_note_score * pure + single_note_score * Decimal(0.5) * far
+        )
+        return (actual_score, actual_score + pure)
+
+    @staticmethod
+    def shiny_pure(notes: int, score: int, pure: int, far: int) -> int:
+        single_note_score = 10000000 / Decimal(notes)
+        actual_score = single_note_score * pure + single_note_score * Decimal(0.5) * far
+        return score - floor(actual_score)
+
+    @staticmethod
+    def score_modifier(score: int) -> Decimal:
+        """
+        Returns the score modifier of the given score
+
+        https://arcaea.fandom.com/wiki/Potential#Score_Modifier
+
+        :param score: The score of the play result, e.g. 9900000
+        :return: The modifier of the given score, e.g. Decimal("1.5")
+        """
+        if not isinstance(score, int):
+            raise TypeError("score must be an integer")
+        if score < 0:
+            raise ValueError("score cannot be negative")
+
+        if score >= 10000000:
+            return Decimal(2)
+        if score >= 9800000:
+            return Decimal(1) + (Decimal(score - 9800000) / 200000)
+        return Decimal(score - 9500000) / 300000
+
+    @classmethod
+    def play_rating(cls, score: int, constant: int) -> Decimal:
+        """
+        Returns the play rating of the given score
+
+        https://arcaea.fandom.com/wiki/Potential#Play_Rating
+
+        :param constant: The (constant * 10) of the played chart, e.g. 120 for Testify[BYD]
+        :param score: The score of the play result, e.g. 10002221
+        :return: The play rating of the given values, e.g. Decimal("14.0")
+        """
+        if not isinstance(score, int):
+            raise TypeError("score must be an integer")
+        if not isinstance(constant, int):
+            raise TypeError("constant must be an integer")
+        if score < 0:
+            raise ValueError("score cannot be negative")
+        if constant < 0:
+            raise ValueError("constant cannot be negative")
+
+        score_modifier = cls.score_modifier(score)
+        return max(Decimal(0), Decimal(constant) / 10 + score_modifier)
+
+    class ConstantsFromPlayRatingResult(TypedDict):
+        EX_PLUS: Tuple[Decimal, Decimal]
+        EX: Tuple[Decimal, Decimal]
+        AA: Tuple[Decimal, Decimal]
+        A: Tuple[Decimal, Decimal]
+        B: Tuple[Decimal, Decimal]
+        C: Tuple[Decimal, Decimal]
+
+    @classmethod
+    def constants_from_play_rating(
+        cls, play_rating: Union[Decimal, str, float, int]
+    ) -> ConstantsFromPlayRatingResult:
+        play_rating = Decimal(play_rating)
+
+        def _result(score_upper: int, score_lower: int) -> Tuple[Decimal, Decimal]:
+            upper_score_modifier = cls.score_modifier(score_upper)
+            lower_score_modifier = cls.score_modifier(score_lower)
+            return (
+                play_rating - upper_score_modifier,
+                play_rating - lower_score_modifier,
+            )
+
+        return {
+            "EX_PLUS": _result(10000000, ScoreLowerLimits.EX_PLUS),
+            "EX": _result(ScoreLowerLimits.EX_PLUS - 1, ScoreLowerLimits.EX),
+            "AA": _result(ScoreLowerLimits.EX - 1, ScoreLowerLimits.AA),
+            "A": _result(ScoreLowerLimits.AA - 1, ScoreLowerLimits.A),
+            "B": _result(ScoreLowerLimits.A - 1, ScoreLowerLimits.B),
+            "C": _result(ScoreLowerLimits.B - 1, ScoreLowerLimits.C),
+        }

src/arcaea_offline/calculators/world/__init__.py

@@ -0,0 +1,11 @@
+from ._common import MemoriesStepBooster, PartnerBonus, WorldPlayResult
+from .legacy import LegacyMapStepBooster
+from .main import WorldMainMapCalculators
+from .partners import (
+    AmaneBelowExPartnerBonus,
+    AwakenedEtoPartnerBonus,
+    AwakenedIlithPartnerBonus,
+    AwakenedLunaPartnerBonus,
+    MayaPartnerBonus,
+    MithraTerceraPartnerBonus,
+)

src/arcaea_offline/calculators/world/_common.py

@@ -0,0 +1,50 @@
+from decimal import Decimal
+from typing import Union
+
+
+class WorldPlayResult:
+    def __init__(
+        self,
+        *,
+        play_rating: Union[Decimal, str, float, int],
+        partner_step: Union[Decimal, str, float, int],
+    ):
+        self.__play_rating = play_rating
+        self.__partner_step = partner_step
+
+    @property
+    def play_rating(self):
+        return Decimal(self.__play_rating)
+
+    @property
+    def partner_step(self):
+        return Decimal(self.__partner_step)
+
+
+class PartnerBonus:
+    def __init__(
+        self,
+        *,
+        step_bonus: Union[Decimal, str, float, int] = Decimal("0.0"),
+        final_multiplier: Union[Decimal, str, float, int] = Decimal("1.0"),
+    ):
+        self.__step_bonus = step_bonus
+        self.__final_multiplier = final_multiplier
+
+    @property
+    def step_bonus(self):
+        return Decimal(self.__step_bonus)
+
+    @property
+    def final_multiplier(self):
+        return Decimal(self.__final_multiplier)
+
+
+class StepBooster:
+    def final_value(self) -> Decimal:
+        raise NotImplementedError()
+
+
+class MemoriesStepBooster(StepBooster):
+    def final_value(self) -> Decimal:
+        return Decimal("4.0")

src/arcaea_offline/calculators/world/legacy.py

@@ -0,0 +1,45 @@
+from decimal import Decimal
+from typing import Literal
+
+from ._common import StepBooster
+
+
+class LegacyMapStepBooster(StepBooster):
+    def __init__(
+        self,
+        stamina: Literal[2, 4, 6],
+        fragments: Literal[100, 250, 500, None],
+    ):
+        self.stamina = stamina
+        self.fragments = fragments
+
+    @property
+    def stamina(self):
+        return self.__stamina
+
+    @stamina.setter
+    def stamina(self, value: Literal[2, 4, 6]):
+        if value not in [2, 4, 6]:
+            raise ValueError("stamina can only be one of [2, 4, 6]")
+        self.__stamina = value
+
+    @property
+    def fragments(self):
+        return self.__fragments
+
+    @fragments.setter
+    def fragments(self, value: Literal[100, 250, 500, None]):
+        if value not in [100, 250, 500, None]:
+            raise ValueError("fragments can only be one of [100, 250, 500, None]")
+        self.__fragments = value
+
+    def final_value(self) -> Decimal:
+        stamina_multiplier = Decimal(self.stamina)
+        fragments_multiplier = Decimal(1)
+        if self.fragments == 100:
+            fragments_multiplier = Decimal("1.1")
+        elif self.fragments == 250:
+            fragments_multiplier = Decimal("1.25")
+        elif self.fragments == 500:
+            fragments_multiplier = Decimal("1.5")
+        return stamina_multiplier * fragments_multiplier

src/arcaea_offline/calculators/world/main.py

@@ -0,0 +1,57 @@
+from decimal import Decimal
+from typing import Optional, Union
+
+from ._common import PartnerBonus, StepBooster, WorldPlayResult
+
+
+class WorldMainMapCalculators:
+    @staticmethod
+    def step(
+        play_result: WorldPlayResult,
+        *,
+        partner_bonus: Optional[PartnerBonus] = None,
+        step_booster: Optional[StepBooster] = None,
+    ) -> Decimal:
+        ptt = play_result.play_rating
+        step = play_result.partner_step
+        if partner_bonus:
+            partner_bonus_step = partner_bonus.step_bonus
+            partner_bonus_multiplier = partner_bonus.final_multiplier
+        else:
+            partner_bonus_step = Decimal("0")
+            partner_bonus_multiplier = Decimal("1.0")
+
+        result = (Decimal("2.45") * ptt.sqrt() + Decimal("2.5")) * (step / 50)
+        result += partner_bonus_step
+        result *= partner_bonus_multiplier
+        if step_booster:
+            result *= step_booster.final_value()
+
+        return result
+
+    @staticmethod
+    def play_rating_from_step(
+        step: Union[Decimal, str, int, float],
+        partner_step_value: Union[Decimal, str, int, float],
+        *,
+        partner_bonus: Optional[PartnerBonus] = None,
+        step_booster: Optional[StepBooster] = None,
+    ):
+        step = Decimal(step)
+        partner_step_value = Decimal(partner_step_value)
+
+        # get original play result
+        if partner_bonus and partner_bonus.final_multiplier:
+            step /= partner_bonus.final_multiplier
+        if step_booster:
+            step /= step_booster.final_value()
+
+        if partner_bonus and partner_bonus.step_bonus:
+            step -= partner_bonus.step_bonus
+
+        play_rating_sqrt = (
+            Decimal(50) * step - Decimal("2.5") * partner_step_value
+        ) / (Decimal("2.45") * partner_step_value)
+        return (
+            play_rating_sqrt**2 if play_rating_sqrt >= 0 else -(play_rating_sqrt**2)
+        )

src/arcaea_offline/calculators/world/partners.py

@@ -0,0 +1,16 @@
+from ._common import PartnerBonus
+
+AwakenedIlithPartnerBonus = PartnerBonus(step_bonus="6.0")
+AwakenedEtoPartnerBonus = PartnerBonus(step_bonus="7.0")
+AwakenedLunaPartnerBonus = PartnerBonus(step_bonus="7.0")
+
+
+AmaneBelowExPartnerBonus = PartnerBonus(final_multiplier="0.5")
+
+
+class MithraTerceraPartnerBonus(PartnerBonus):
+    def __init__(self, step_bonus: int):
+        super().__init__(step_bonus=step_bonus)
+
+
+MayaPartnerBonus = PartnerBonus(final_multiplier="2.0")

src/arcaea_offline/constants/enums/__init__.py

@@ -0,0 +1,3 @@
+from .clear_type import ArcaeaPlayResultClearType
+from .modifier import ArcaeaPlayResultModifier
+from .rating_class import ArcaeaRatingClass

src/arcaea_offline/constants/enums/clear_type.py

@@ -0,0 +1,10 @@
+from enum import IntEnum
+
+
+class ArcaeaPlayResultClearType(IntEnum):
+    TRACK_LOST = 0
+    NORMAL_CLEAR = 1
+    FULL_RECALL = 2
+    PURE_MEMORY = 3
+    HARD_CLEAR = 4
+    EASY_CLEAR = 5

src/arcaea_offline/constants/enums/modifier.py

@@ -0,0 +1,7 @@
+from enum import IntEnum
+
+
+class ArcaeaPlayResultModifier(IntEnum):
+    NORMAL = 0
+    EASY = 1
+    HARD = 2

src/arcaea_offline/constants/enums/rating_class.py

@@ -0,0 +1,9 @@
+from enum import IntEnum
+
+
+class ArcaeaRatingClass(IntEnum):
+    PAST = 0
+    PRESENT = 1
+    FUTURE = 2
+    BEYOND = 3
+    ETERNAL = 4

src/arcaea_offline/constants/play_result.py

@@ -0,0 +1,12 @@
+from dataclasses import dataclass
+
+
+@dataclass(frozen=True)
+class ScoreLowerLimits:
+    EX_PLUS = 9900000
+    EX = 9800000
+    AA = 9500000
+    A = 9200000
+    B = 8900000
+    C = 8600000
+    D = 0

src/arcaea_offline/database/__init__.py

@@ -0,0 +1 @@
+from .db import Database

src/arcaea_offline/database/db.py

@@ -5,10 +5,16 @@ from typing import Iterable, List, Optional, Type, Union
 from sqlalchemy import Engine, func, inspect, select
 from sqlalchemy.orm import DeclarativeBase, InstrumentedAttribute, sessionmaker
 
-from .external.arcsong.arcsong_json import ArcSongJsonBuilder
-from .external.exports import ArcaeaOfflineDEFV2_Score, ScoreExport, exporters
-from .models.config import ConfigBase, Property
-from .models.scores import (
+from arcaea_offline.external.arcsong.arcsong_json import ArcSongJsonBuilder
+from arcaea_offline.external.exports import (
+    ArcaeaOfflineDEFV2_Score,
+    ScoreExport,
+    exporters,
+)
+from arcaea_offline.singleton import Singleton
+
+from .models.v4.config import ConfigBase, Property
+from .models.v4.scores import (
     CalculatedPotential,
     Score,
     ScoreBest,
@@ -16,7 +22,7 @@ from .models.scores import (
     ScoresBase,
     ScoresViewBase,
 )
-from .models.songs import (
+from .models.v4.songs import (
     Chart,
     ChartInfo,
     Difficulty,
@@ -28,7 +34,6 @@ from .models.songs import (
     SongsBase,
     SongsViewBase,
 )
-from .singleton import Singleton
 
 logger = logging.getLogger(__name__)
 

src/arcaea_offline/database/models/_custom_types.py

@@ -0,0 +1,58 @@
+from typing import Optional
+
+from sqlalchemy import Integer
+from sqlalchemy.types import TypeDecorator
+
+from arcaea_offline.constants.enums import (
+    ArcaeaPlayResultClearType,
+    ArcaeaPlayResultModifier,
+    ArcaeaRatingClass,
+)
+
+
+class DbRatingClass(TypeDecorator):
+    """sqlalchemy rating_class type decorator"""
+
+    impl = Integer
+
+    def process_bind_param(
+        self, value: Optional[ArcaeaRatingClass], dialect
+    ) -> Optional[int]:
+        return None if value is None else value.value
+
+    def process_result_value(
+        self, value: Optional[int], dialect
+    ) -> Optional[ArcaeaRatingClass]:
+        return None if value is None else ArcaeaRatingClass(value)
+
+
+class DbClearType(TypeDecorator):
+    """sqlalchemy clear_type type decorator"""
+
+    impl = Integer
+
+    def process_bind_param(
+        self, value: Optional[ArcaeaPlayResultClearType], dialect
+    ) -> Optional[int]:
+        return None if value is None else value.value
+
+    def process_result_value(
+        self, value: Optional[int], dialect
+    ) -> Optional[ArcaeaPlayResultClearType]:
+        return None if value is None else ArcaeaPlayResultClearType(value)
+
+
+class DbModifier(TypeDecorator):
+    """sqlalchemy modifier type decorator"""
+
+    impl = Integer
+
+    def process_bind_param(
+        self, value: Optional[ArcaeaPlayResultModifier], dialect
+    ) -> Optional[int]:
+        return None if value is None else value.value
+
+    def process_result_value(
+        self, value: Optional[int], dialect
+    ) -> Optional[ArcaeaPlayResultModifier]:
+        return None if value is None else ArcaeaPlayResultModifier(value)

src/arcaea_offline/searcher.py

@@ -1,111 +0,0 @@
-from typing import List, Union
-
-from sqlalchemy import select
-from sqlalchemy.orm import Session
-from whoosh.analysis import NgramFilter, StandardAnalyzer
-from whoosh.fields import ID, KEYWORD, TEXT, Schema
-from whoosh.filedb.filestore import RamStorage
-from whoosh.qparser import FuzzyTermPlugin, MultifieldParser, OrGroup
-
-from .models.songs import Song, SongLocalized
-from .utils.search_title import recover_search_title
-
-
-class Searcher:
-    def __init__(self):
-        self.text_analyzer = StandardAnalyzer() | NgramFilter(minsize=2, maxsize=5)
-        self.song_schema = Schema(
-            song_id=ID(stored=True, unique=True),
-            title=TEXT(analyzer=self.text_analyzer, spelling=True),
-            artist=TEXT(analyzer=self.text_analyzer, spelling=True),
-            source=TEXT(analyzer=self.text_analyzer, spelling=True),
-            keywords=KEYWORD(lowercase=True, stored=True, scorable=True),
-        )
-        self.storage = RamStorage()
-        self.index = self.storage.create_index(self.song_schema)
-
-        self.default_query_parser = MultifieldParser(
-            ["song_id", "title", "artist", "source", "keywords"],
-            self.song_schema,
-            group=OrGroup,
-        )
-        self.default_query_parser.add_plugin(FuzzyTermPlugin())
-
-    def import_songs(self, session: Session):
-        writer = self.index.writer()
-        songs = list(session.scalars(select(Song)))
-        song_localize_stmt = select(SongLocalized)
-        for song in songs:
-            stmt = song_localize_stmt.where(SongLocalized.id == song.id)
-            sl = session.scalar(stmt)
-            song_id = song.id
-            possible_titles: List[Union[str, None]] = [song.title]
-            possible_artists: List[Union[str, None]] = [song.artist]
-            possible_sources: List[Union[str, None]] = [song.source]
-            if sl:
-                possible_titles.extend(
-                    [sl.title_ja, sl.title_ko, sl.title_zh_hans, sl.title_zh_hant]
-                )
-                possible_titles.extend(
-                    recover_search_title(sl.search_title_ja)
-                    + recover_search_title(sl.search_title_ko)
-                    + recover_search_title(sl.search_title_zh_hans)
-                    + recover_search_title(sl.search_title_zh_hant)
-                )
-                possible_artists.extend(
-                    recover_search_title(sl.search_artist_ja)
-                    + recover_search_title(sl.search_artist_ko)
-                    + recover_search_title(sl.search_artist_zh_hans)
-                    + recover_search_title(sl.search_artist_zh_hant)
-                )
-                possible_sources.extend(
-                    [
-                        sl.source_ja,
-                        sl.source_ko,
-                        sl.source_zh_hans,
-                        sl.source_zh_hant,
-                    ]
-                )
-
-            # remove empty items in list
-            titles = [t for t in possible_titles if t != "" and t is not None]
-            artists = [t for t in possible_artists if t != "" and t is not None]
-            sources = [t for t in possible_sources if t != "" and t is not None]
-
-            writer.update_document(
-                song_id=song_id,
-                title=" ".join(titles),
-                artist=" ".join(artists),
-                source=" ".join(sources),
-                keywords=" ".join([song_id] + titles + artists + sources),
-            )
-
-        writer.commit()
-
-    def did_you_mean(self, string: str):
-        results = set()
-
-        with self.index.searcher() as searcher:
-            corrector_keywords = searcher.corrector("keywords")  # type: ignore
-            corrector_song_id = searcher.corrector("song_id")  # type: ignore
-            corrector_title = searcher.corrector("title")  # type: ignore
-            corrector_artist = searcher.corrector("artist")  # type: ignore
-            corrector_source = searcher.corrector("source")  # type: ignore
-
-            results.update(corrector_keywords.suggest(string))
-            results.update(corrector_song_id.suggest(string))
-            results.update(corrector_title.suggest(string))
-            results.update(corrector_artist.suggest(string))
-            results.update(corrector_source.suggest(string))
-
-        if string in results:
-            results.remove(string)
-
-        return list(results)
-
-    def search(self, string: str, *, limit: int = 10):
-        query_string = f"{string}"
-        query = self.default_query_parser.parse(query_string)
-        with self.index.searcher() as searcher:
-            results = searcher.search(query, limit=limit)
-            return [result.get("song_id") for result in results]

src/arcaea_offline/utils/formatters/__init__.py

@@ -0,0 +1,2 @@
+from .play_result import PlayResultFormatter
+from .rating_class import RatingClassFormatter

src/arcaea_offline/utils/formatters/play_result.py

@@ -0,0 +1,143 @@
+from typing import Any, Literal, overload
+
+from arcaea_offline.constants.enums import (
+    ArcaeaPlayResultClearType,
+    ArcaeaPlayResultModifier,
+)
+from arcaea_offline.constants.play_result import ScoreLowerLimits
+
+
+class PlayResultFormatter:
+    SCORE_GRADE_FORMAT_RESULTS = Literal["EX+", "EX", "AA", "A", "B", "C", "D"]
+
+    @staticmethod
+    def score_grade(score: int) -> SCORE_GRADE_FORMAT_RESULTS:
+        """
+        Returns the score grade, e.g. EX+.
+
+        Raises `ValueError` if the score is negative.
+        """
+        if not isinstance(score, int):
+            raise TypeError(f"Unsupported type {type(score)}, cannot format")
+
+        if score >= ScoreLowerLimits.EX_PLUS:
+            return "EX+"
+        elif score >= ScoreLowerLimits.EX:
+            return "EX"
+        elif score >= ScoreLowerLimits.AA:
+            return "AA"
+        elif score >= ScoreLowerLimits.A:
+            return "A"
+        elif score >= ScoreLowerLimits.B:
+            return "B"
+        elif score >= ScoreLowerLimits.C:
+            return "C"
+        elif score >= ScoreLowerLimits.D:
+            return "D"
+        else:
+            raise ValueError("score cannot be negative")
+
+    CLEAR_TYPE_FORMAT_RESULTS = Literal[
+        "TRACK LOST",
+        "NORMAL CLEAR",
+        "FULL RECALL",
+        "PURE MEMORY",
+        "EASY CLEAR",
+        "HARD CLEAR",
+        "UNKNOWN",
+        "None",
+    ]
+
+    @overload
+    @classmethod
+    def clear_type(
+        cls, clear_type: ArcaeaPlayResultClearType
+    ) -> CLEAR_TYPE_FORMAT_RESULTS:
+        """
+        Returns the uppercased clear type name, e.g. NORMAL CLEAR.
+        """
+        ...
+
+    @overload
+    @classmethod
+    def clear_type(cls, clear_type: int) -> CLEAR_TYPE_FORMAT_RESULTS:
+        """
+        Returns the uppercased clear type name, e.g. NORMAL CLEAR.
+
+        The integer will be converted to `ArcaeaPlayResultClearType` enum,
+        and will return "UNKNOWN" if the convertion fails.
+
+        Raises `ValueError` if the integer is negative.
+        """
+        ...
+
+    @overload
+    @classmethod
+    def clear_type(cls, clear_type: None) -> CLEAR_TYPE_FORMAT_RESULTS:
+        """
+        Returns "None"
+        """
+        ...
+
+    @classmethod
+    def clear_type(cls, clear_type: Any) -> CLEAR_TYPE_FORMAT_RESULTS:
+        if clear_type is None:
+            return "None"
+        elif isinstance(clear_type, ArcaeaPlayResultClearType):
+            return clear_type.name.replace("_", " ").upper()  # type: ignore
+        elif isinstance(clear_type, int):
+            if clear_type < 0:
+                raise ValueError("clear_type cannot be negative")
+            try:
+                return cls.clear_type(ArcaeaPlayResultClearType(clear_type))
+            except ValueError:
+                return "UNKNOWN"
+        else:
+            raise TypeError(f"Unsupported type {type(clear_type)}, cannot format")
+
+    MODIFIER_FORMAT_RESULTS = Literal["NORMAL", "EASY", "HARD", "UNKNOWN", "None"]
+
+    @overload
+    @classmethod
+    def modifier(cls, modifier: ArcaeaPlayResultModifier) -> MODIFIER_FORMAT_RESULTS:
+        """
+        Returns the uppercased clear type name, e.g. NORMAL CLEAR.
+        """
+        ...
+
+    @overload
+    @classmethod
+    def modifier(cls, modifier: int) -> MODIFIER_FORMAT_RESULTS:
+        """
+        Returns the uppercased clear type name, e.g. NORMAL CLEAR.
+
+        The integer will be converted to `ArcaeaPlayResultModifier` enum,
+        and will return "UNKNOWN" if the convertion fails.
+
+        Raises `ValueError` if the integer is negative.
+        """
+        ...
+
+    @overload
+    @classmethod
+    def modifier(cls, modifier: None) -> MODIFIER_FORMAT_RESULTS:
+        """
+        Returns "None"
+        """
+        ...
+
+    @classmethod
+    def modifier(cls, modifier: Any) -> MODIFIER_FORMAT_RESULTS:
+        if modifier is None:
+            return "None"
+        elif isinstance(modifier, ArcaeaPlayResultModifier):
+            return modifier.name
+        elif isinstance(modifier, int):
+            if modifier < 0:
+                raise ValueError("modifier cannot be negative")
+            try:
+                return cls.modifier(ArcaeaPlayResultModifier(modifier))
+            except ValueError:
+                return "UNKNOWN"
+        else:
+            raise TypeError(f"Unsupported type {type(modifier)}, cannot format")

src/arcaea_offline/utils/formatters/rating_class.py

@@ -0,0 +1,83 @@
+from typing import Any, Literal, overload
+
+from arcaea_offline.constants.enums import ArcaeaRatingClass
+
+
+class RatingClassFormatter:
+    abbreviations = {
+        ArcaeaRatingClass.PAST: "PST",
+        ArcaeaRatingClass.PRESENT: "PRS",
+        ArcaeaRatingClass.FUTURE: "FTR",
+        ArcaeaRatingClass.BEYOND: "BYD",
+        ArcaeaRatingClass.ETERNAL: "ETR",
+    }
+
+    NAME_FORMAT_RESULTS = Literal[
+        "Past", "Present", "Future", "Beyond", "Eternal", "Unknown"
+    ]
+
+    @overload
+    @classmethod
+    def name(cls, rating_class: ArcaeaRatingClass) -> NAME_FORMAT_RESULTS:
+        """
+        Returns the capitalized rating class name, e.g. Future.
+        """
+        ...
+
+    @overload
+    @classmethod
+    def name(cls, rating_class: int) -> NAME_FORMAT_RESULTS:
+        """
+        Returns the capitalized rating class name, e.g. Future.
+
+        The integer will be converted to `ArcaeaRatingClass` enum,
+        and will return "Unknown" if the convertion fails.
+        """
+        ...
+
+    @classmethod
+    def name(cls, rating_class: Any) -> NAME_FORMAT_RESULTS:
+        if isinstance(rating_class, ArcaeaRatingClass):
+            return rating_class.name.lower().capitalize()  # type: ignore
+        elif isinstance(rating_class, int):
+            try:
+                return cls.name(ArcaeaRatingClass(rating_class))
+            except ValueError:
+                return "Unknown"
+        else:
+            raise TypeError(f"Unsupported type: {type(rating_class)}, cannot format")
+
+    ABBREVIATION_FORMAT_RESULTS = Literal["PST", "PRS", "FTR", "BYD", "ETR", "UNK"]
+
+    @overload
+    @classmethod
+    def abbreviation(
+        cls, rating_class: ArcaeaRatingClass
+    ) -> ABBREVIATION_FORMAT_RESULTS:
+        """
+        Returns the uppercased rating class name, e.g. FTR.
+        """
+        ...
+
+    @overload
+    @classmethod
+    def abbreviation(cls, rating_class: int) -> ABBREVIATION_FORMAT_RESULTS:
+        """
+        Returns the uppercased rating class name, e.g. FTR.
+
+        The integer will be converted to `ArcaeaRatingClass` enum,
+        and will return "UNK" if the convertion fails.
+        """
+        ...
+
+    @classmethod
+    def abbreviation(cls, rating_class: Any) -> ABBREVIATION_FORMAT_RESULTS:
+        if isinstance(rating_class, ArcaeaRatingClass):
+            return cls.abbreviations[rating_class]  # type: ignore
+        elif isinstance(rating_class, int):
+            try:
+                return cls.abbreviation(ArcaeaRatingClass(rating_class))
+            except ValueError:
+                return "UNK"
+        else:
+            raise TypeError(f"Unsupported type: {type(rating_class)}, cannot format")

src/arcaea_offline/utils/rating.py

@@ -1,25 +0,0 @@
-from typing import Optional
-
-RATING_CLASS_TEXT_MAP = {
-    0: "Past",
-    1: "Present",
-    2: "Future",
-    3: "Beyond",
-    4: "Eternal",
-}
-
-RATING_CLASS_SHORT_TEXT_MAP = {
-    0: "PST",
-    1: "PRS",
-    2: "FTR",
-    3: "BYD",
-    4: "ETR",
-}
-
-
-def rating_class_to_text(rating_class: int) -> Optional[str]:
-    return RATING_CLASS_TEXT_MAP.get(rating_class)
-
-
-def rating_class_to_short_text(rating_class: int) -> Optional[str]:
-    return RATING_CLASS_SHORT_TEXT_MAP.get(rating_class)

src/arcaea_offline/utils/score.py

@@ -1,46 +0,0 @@
-from typing import Any, Sequence
-
-SCORE_GRADE_FLOOR = [9900000, 9800000, 9500000, 9200000, 8900000, 8600000, 0]
-SCORE_GRADE_TEXTS = ["EX+", "EX", "AA", "A", "B", "C", "D"]
-MODIFIER_TEXTS = ["NORMAL", "EASY", "HARD"]
-CLEAR_TYPE_TEXTS = [
-    "TRACK LOST",
-    "NORMAL CLEAR",
-    "FULL RECALL",
-    "PURE MEMORY",
-    "EASY CLEAR",
-    "HARD CLEAR",
-]
-
-
-def zip_score_grade(score: int, __seq: Sequence, default: Any = "__PRESERVE__"):
-    """
-    zip_score_grade is a simple wrapper that equals to:
-    ```py
-    for score_floor, val in zip(SCORE_GRADE_FLOOR, __seq):
-        if score >= score_floor:
-            return val
-    return seq[-1] if default == "__PRESERVE__" else default
-    ```
-    Could be useful in specific cases.
-    """
-    return next(
-        (
-            val
-            for score_floor, val in zip(SCORE_GRADE_FLOOR, __seq)
-            if score >= score_floor
-        ),
-        __seq[-1] if default == "__PRESERVE__" else default,
-    )
-
-
-def score_to_grade_text(score: int) -> str:
-    return zip_score_grade(score, SCORE_GRADE_TEXTS)
-
-
-def modifier_to_text(modifier: int) -> str:
-    return MODIFIER_TEXTS[modifier]
-
-
-def clear_type_to_text(clear_type: int) -> str:
-    return CLEAR_TYPE_TEXTS[clear_type]

src/arcaea_offline/utils/search_title.py

@@ -1,6 +0,0 @@
-import json
-from typing import List, Optional
-
-
-def recover_search_title(db_value: Optional[str]) -> List[str]:
-    return json.loads(db_value) if db_value else []

tests/calculate/test_world_step.py

@@ -1,22 +0,0 @@
-from decimal import Decimal
-
-from arcaea_offline.calculate.world_step import (
-    AwakenedAyuPartnerBonus,
-    LegacyMapStepBooster,
-    PlayResult,
-    calculate_step_original,
-)
-
-
-def test_world_step():
-    # the result was copied from https://arcaea.fandom.com/wiki/World_Mode_Mechanics#Calculation
-    # CC BY-SA 3.0
-
-    booster = LegacyMapStepBooster(6, 250)
-    partner_bonus = AwakenedAyuPartnerBonus("+3.6")
-    play_result = PlayResult(play_rating=Decimal("11.299"), partner_step=92)
-    result = calculate_step_original(
-        play_result, partner_bonus=partner_bonus, step_booster=booster
-    )
-
-    assert result.quantize(Decimal("0.000")) == Decimal("175.149")

tests/calculators/test_play_result.py

@@ -0,0 +1,42 @@
+from decimal import Decimal
+
+import pytest
+
+from arcaea_offline.calculators.play_result import PlayResultCalculators
+
+
+class TestPlayResultCalculators:
+    def test_score_modifier(self):
+        # Results from https://arcaea.fandom.com/wiki/Potential#Score_Modifier
+
+        assert PlayResultCalculators.score_modifier(10000000) == Decimal("2.0")
+        assert PlayResultCalculators.score_modifier(9900000) == Decimal("1.5")
+        assert PlayResultCalculators.score_modifier(9800000) == Decimal("1.0")
+        assert PlayResultCalculators.score_modifier(9500000) == Decimal("0.0")
+        assert PlayResultCalculators.score_modifier(9200000) == Decimal("-1.0")
+        assert PlayResultCalculators.score_modifier(8900000) == Decimal("-2.0")
+        assert PlayResultCalculators.score_modifier(8600000) == Decimal("-3.0")
+
+        assert PlayResultCalculators.score_modifier(0).quantize(
+            Decimal("-0.00")
+        ) == Decimal("-31.67")
+
+        pytest.raises(ValueError, PlayResultCalculators.score_modifier, -1)
+
+        pytest.raises(TypeError, PlayResultCalculators.score_modifier, "9800000")
+        pytest.raises(TypeError, PlayResultCalculators.score_modifier, None)
+        pytest.raises(TypeError, PlayResultCalculators.score_modifier, [])
+
+    def test_play_rating(self):
+        assert PlayResultCalculators.play_rating(10002221, 120) == Decimal("14.0")
+
+        assert PlayResultCalculators.play_rating(5500000, 120) == Decimal("0.0")
+
+        pytest.raises(TypeError, PlayResultCalculators.play_rating, "10002221", 120)
+        pytest.raises(TypeError, PlayResultCalculators.play_rating, 10002221, "120")
+        pytest.raises(TypeError, PlayResultCalculators.play_rating, "10002221", "120")
+
+        pytest.raises(TypeError, PlayResultCalculators.play_rating, 10002221, None)
+
+        pytest.raises(ValueError, PlayResultCalculators.play_rating, -1, 120)
+        pytest.raises(ValueError, PlayResultCalculators.play_rating, 10002221, -1)

tests/calculators/test_world.py

@@ -0,0 +1,74 @@
+from decimal import ROUND_FLOOR, Decimal
+
+from arcaea_offline.calculators.play_result import PlayResultCalculators
+from arcaea_offline.calculators.world import (
+    LegacyMapStepBooster,
+    PartnerBonus,
+    WorldMainMapCalculators,
+    WorldPlayResult,
+)
+
+
+class TestWorldMainMapCalculators:
+    def test_step_fandom(self):
+        # Final result from https://arcaea.fandom.com/wiki/World_Mode_Mechanics#Calculation
+        # CC BY-SA 3.0
+
+        booster = LegacyMapStepBooster(6, 250)
+        partner_bonus = PartnerBonus(step_bonus="+3.6")
+        play_result = WorldPlayResult(play_rating=Decimal("11.299"), partner_step=92)
+        result = WorldMainMapCalculators.step(
+            play_result, partner_bonus=partner_bonus, step_booster=booster
+        )
+
+        assert result.quantize(Decimal("0.000")) == Decimal("175.149")
+
+    def test_step(self):
+        # Results from actual play results, Arcaea v5.5.8c
+
+        def _quantize(decimal: Decimal) -> Decimal:
+            return decimal.quantize(Decimal("0.0"), rounding=ROUND_FLOOR)
+
+        # goldenslaughter FTR [9.7], 9906968
+        # 10.7 > 34.2 < 160
+        assert _quantize(
+            WorldMainMapCalculators.step(
+                WorldPlayResult(
+                    play_rating=PlayResultCalculators.play_rating(9906968, 97),
+                    partner_step=160,
+                )
+            )
+        ) == Decimal("34.2")
+
+        # Luna Rossa FTR [9.7], 9984569
+        # 10.8 > 34.7 < 160
+        assert _quantize(
+            WorldMainMapCalculators.step(
+                WorldPlayResult(
+                    play_rating=PlayResultCalculators.play_rating(9984569, 97),
+                    partner_step=160,
+                )
+            )
+        ) == Decimal("34.7")
+
+        # ultradiaxon-N3 FTR [10.5], 9349575
+        # 10.2 > 32.7 < 160
+        assert _quantize(
+            WorldMainMapCalculators.step(
+                WorldPlayResult(
+                    play_rating=PlayResultCalculators.play_rating(9349575, 105),
+                    partner_step=160,
+                )
+            )
+        ) == Decimal("32.7")
+
+        # san skia FTR [8.3], 10001036
+        # 10.3 > 64.2 < 310
+        assert _quantize(
+            WorldMainMapCalculators.step(
+                WorldPlayResult(
+                    play_rating=PlayResultCalculators.play_rating(10001036, 83),
+                    partner_step=310,
+                )
+            )
+        ) == Decimal("64.2")

tests/conftest.py

@@ -0,0 +1,27 @@
+import pytest
+from sqlalchemy import create_engine
+from sqlalchemy.orm import Session, sessionmaker
+
+# region sqlalchemy fixtures
+# from https://medium.com/@vittorio.camisa/agile-database-integration-tests-with-python-sqlalchemy-and-factory-boy-6824e8fe33a1
+engine = create_engine("sqlite:///:memory:")
+Session = sessionmaker()
+
+
+@pytest.fixture(scope="module")
+def db_conn():
+    connection = engine.connect()
+    yield connection
+    connection.close()
+
+
+@pytest.fixture(scope="function")
+def db_session(db_conn):
+    transaction = db_conn.begin()
+    session = Session(bind=db_conn)
+    yield session
+    session.close()
+    transaction.rollback()
+
+
+# endregion

tests/db/models/test_custom_types.py

@@ -0,0 +1,95 @@
+from typing import Optional
+
+from sqlalchemy import text
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
+
+from arcaea_offline.constants.enums import (
+    ArcaeaPlayResultClearType,
+    ArcaeaPlayResultModifier,
+    ArcaeaRatingClass,
+)
+from arcaea_offline.database.models._custom_types import (
+    DbClearType,
+    DbModifier,
+    DbRatingClass,
+)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+class RatingClassTestModel(Base):
+    __tablename__ = "test_rating_class"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    value: Mapped[Optional[ArcaeaRatingClass]] = mapped_column(
+        DbRatingClass, nullable=True
+    )
+
+
+class ClearTypeTestModel(Base):
+    __tablename__ = "test_clear_type"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    value: Mapped[Optional[ArcaeaPlayResultClearType]] = mapped_column(
+        DbClearType, nullable=True
+    )
+
+
+class ModifierTestModel(Base):
+    __tablename__ = "test_modifier"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    value: Mapped[Optional[ArcaeaPlayResultModifier]] = mapped_column(
+        DbModifier, nullable=True
+    )
+
+
+class TestCustomTypes:
+    def _common_test_method(self, db_session, obj: Base, value_in_db):
+        """
+        This method stores the `obj` into the given `db_session`,
+        then fetches the raw value of `obj.value` from database,
+        and asserts that the value is equal to `value_in_db`.
+        """
+        db_session.add(obj)
+        db_session.commit()
+
+        exec_result = db_session.execute(
+            text(
+                f"SELECT value FROM {obj.__tablename__} WHERE id = {obj.id}"  # type: ignore
+            )
+        ).fetchone()[0]
+
+        if value_in_db is None:
+            assert exec_result is value_in_db
+        else:
+            assert exec_result == value_in_db
+
+    def test_rating_class(self, db_session):
+        Base.metadata.create_all(db_session.bind)
+
+        basic_obj = RatingClassTestModel(id=1, value=ArcaeaRatingClass.FUTURE)
+        self._common_test_method(db_session, basic_obj, 2)
+
+        null_obj = RatingClassTestModel(id=2, value=None)
+        self._common_test_method(db_session, null_obj, None)
+
+    def test_clear_type(self, db_session):
+        Base.metadata.create_all(db_session.bind)
+
+        basic_obj = ClearTypeTestModel(id=1, value=ArcaeaPlayResultClearType.TRACK_LOST)
+        self._common_test_method(db_session, basic_obj, 0)
+
+        null_obj = ClearTypeTestModel(id=2, value=None)
+        self._common_test_method(db_session, null_obj, None)
+
+    def test_modifier(self, db_session):
+        Base.metadata.create_all(db_session.bind)
+
+        basic_obj = ModifierTestModel(id=1, value=ArcaeaPlayResultModifier.HARD)
+        self._common_test_method(db_session, basic_obj, 2)
+
+        null_obj = ModifierTestModel(id=2, value=None)
+        self._common_test_method(db_session, null_obj, None)

tests/utils/test_formatters.py

@@ -0,0 +1,126 @@
+import pytest
+
+from arcaea_offline.constants.enums import (
+    ArcaeaPlayResultClearType,
+    ArcaeaPlayResultModifier,
+    ArcaeaRatingClass,
+)
+from arcaea_offline.utils.formatters.play_result import PlayResultFormatter
+from arcaea_offline.utils.formatters.rating_class import RatingClassFormatter
+
+
+class TestRatingClassFormatter:
+    def test_name(self):
+        assert RatingClassFormatter.name(ArcaeaRatingClass.PAST) == "Past"
+        assert RatingClassFormatter.name(ArcaeaRatingClass.PRESENT) == "Present"
+        assert RatingClassFormatter.name(ArcaeaRatingClass.FUTURE) == "Future"
+        assert RatingClassFormatter.name(ArcaeaRatingClass.BEYOND) == "Beyond"
+        assert RatingClassFormatter.name(ArcaeaRatingClass.ETERNAL) == "Eternal"
+
+        assert RatingClassFormatter.name(2) == "Future"
+
+        assert RatingClassFormatter.name(100) == "Unknown"
+        assert RatingClassFormatter.name(-1) == "Unknown"
+
+        pytest.raises(TypeError, RatingClassFormatter.name, "2")
+        pytest.raises(TypeError, RatingClassFormatter.name, [])
+        pytest.raises(TypeError, RatingClassFormatter.name, None)
+
+    def test_abbreviation(self):
+        assert RatingClassFormatter.abbreviation(ArcaeaRatingClass.PAST) == "PST"
+        assert RatingClassFormatter.abbreviation(ArcaeaRatingClass.PRESENT) == "PRS"
+        assert RatingClassFormatter.abbreviation(ArcaeaRatingClass.FUTURE) == "FTR"
+        assert RatingClassFormatter.abbreviation(ArcaeaRatingClass.BEYOND) == "BYD"
+        assert RatingClassFormatter.abbreviation(ArcaeaRatingClass.ETERNAL) == "ETR"
+
+        assert RatingClassFormatter.abbreviation(2) == "FTR"
+
+        assert RatingClassFormatter.abbreviation(100) == "UNK"
+        assert RatingClassFormatter.abbreviation(-1) == "UNK"
+
+        pytest.raises(TypeError, RatingClassFormatter.abbreviation, "2")
+        pytest.raises(TypeError, RatingClassFormatter.abbreviation, [])
+        pytest.raises(TypeError, RatingClassFormatter.abbreviation, None)
+
+
+class TestPlayResultFormatter:
+    def test_score_grade(self):
+        assert PlayResultFormatter.score_grade(10001284) == "EX+"
+        assert PlayResultFormatter.score_grade(9989210) == "EX+"
+        assert PlayResultFormatter.score_grade(9900000) == "EX+"
+
+        assert PlayResultFormatter.score_grade(9899999) == "EX"
+        assert PlayResultFormatter.score_grade(9843717) == "EX"
+        assert PlayResultFormatter.score_grade(9800000) == "EX"
+
+        assert PlayResultFormatter.score_grade(9799999) == "AA"
+        assert PlayResultFormatter.score_grade(9794015) == "AA"
+        assert PlayResultFormatter.score_grade(9750000) == "AA"
+
+        assert PlayResultFormatter.score_grade(9499999) == "A"
+        assert PlayResultFormatter.score_grade(9356855) == "A"
+        assert PlayResultFormatter.score_grade(9200000) == "A"
+
+        assert PlayResultFormatter.score_grade(9199999) == "B"
+        assert PlayResultFormatter.score_grade(9065785) == "B"
+        assert PlayResultFormatter.score_grade(8900000) == "B"
+
+        assert PlayResultFormatter.score_grade(8899999) == "C"
+        assert PlayResultFormatter.score_grade(8756211) == "C"
+        assert PlayResultFormatter.score_grade(8600000) == "C"
+
+        assert PlayResultFormatter.score_grade(8599999) == "D"
+        assert PlayResultFormatter.score_grade(5500000) == "D"
+        assert PlayResultFormatter.score_grade(0) == "D"
+
+        pytest.raises(ValueError, PlayResultFormatter.score_grade, -1)
+        pytest.raises(TypeError, PlayResultFormatter.score_grade, "10001284")
+        pytest.raises(TypeError, PlayResultFormatter.score_grade, [])
+        pytest.raises(TypeError, PlayResultFormatter.score_grade, None)
+
+    def test_clear_type(self):
+        assert (
+            PlayResultFormatter.clear_type(ArcaeaPlayResultClearType.TRACK_LOST)
+            == "TRACK LOST"
+        )
+        assert (
+            PlayResultFormatter.clear_type(ArcaeaPlayResultClearType.NORMAL_CLEAR)
+            == "NORMAL CLEAR"
+        )
+        assert (
+            PlayResultFormatter.clear_type(ArcaeaPlayResultClearType.FULL_RECALL)
+            == "FULL RECALL"
+        )
+        assert (
+            PlayResultFormatter.clear_type(ArcaeaPlayResultClearType.PURE_MEMORY)
+            == "PURE MEMORY"
+        )
+        assert (
+            PlayResultFormatter.clear_type(ArcaeaPlayResultClearType.EASY_CLEAR)
+            == "EASY CLEAR"
+        )
+        assert (
+            PlayResultFormatter.clear_type(ArcaeaPlayResultClearType.HARD_CLEAR)
+            == "HARD CLEAR"
+        )
+        assert PlayResultFormatter.clear_type(None) == "None"
+
+        assert PlayResultFormatter.clear_type(1) == "NORMAL CLEAR"
+        assert PlayResultFormatter.clear_type(6) == "UNKNOWN"
+
+        pytest.raises(ValueError, PlayResultFormatter.clear_type, -1)
+        pytest.raises(TypeError, PlayResultFormatter.clear_type, "1")
+        pytest.raises(TypeError, PlayResultFormatter.clear_type, [])
+
+    def test_modifier(self):
+        assert PlayResultFormatter.modifier(ArcaeaPlayResultModifier.NORMAL) == "NORMAL"
+        assert PlayResultFormatter.modifier(ArcaeaPlayResultModifier.EASY) == "EASY"
+        assert PlayResultFormatter.modifier(ArcaeaPlayResultModifier.HARD) == "HARD"
+        assert PlayResultFormatter.modifier(None) == "None"
+
+        assert PlayResultFormatter.modifier(1) == "EASY"
+        assert PlayResultFormatter.modifier(6) == "UNKNOWN"
+
+        pytest.raises(ValueError, PlayResultFormatter.modifier, -1)
+        pytest.raises(TypeError, PlayResultFormatter.modifier, "1")
+        pytest.raises(TypeError, PlayResultFormatter.modifier, [])