110 lines
3.2 KiB
Python
110 lines
3.2 KiB
Python
import json
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from dataclasses import asdict, dataclass, replace
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from pathlib import Path
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from app.analysis.levels import Level, LevelKind, Side
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from app.bars.models import Timeframe
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from app.config import TIMEFRAME_WEIGHT
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@dataclass(slots=True)
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class ManualLine:
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id: str
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tf: Timeframe
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side: Side
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anchor_t: int
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anchor_p: float
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slope: float
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last_t: int
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created_at: int
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note: str = ""
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hidden: bool = False
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def to_level(self) -> Level:
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return Level(
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id=self.id,
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kind=LevelKind.MANUAL,
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tf=self.tf,
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side=self.side,
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weight=TIMEFRAME_WEIGHT[self.tf],
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score=1.0,
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label=f"{self.tf.value} {self.side.value}",
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anchor_t=self.anchor_t,
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anchor_p=self.anchor_p,
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slope=self.slope,
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points=None,
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touches=0,
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first_t=self.anchor_t,
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last_t=self.last_t,
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provisional=False,
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hidden=self.hidden,
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)
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def to_dict(self) -> dict:
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value = asdict(self)
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value["tf"] = self.tf.value
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value["side"] = self.side.value
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return value
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@classmethod
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def from_dict(cls, value: dict) -> "ManualLine":
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return cls(
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id=str(value["id"]),
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tf=Timeframe(value["tf"]),
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side=Side(value["side"]),
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anchor_t=int(value["anchor_t"]),
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anchor_p=float(value["anchor_p"]),
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slope=float(value["slope"]),
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last_t=int(value.get("last_t", value["anchor_t"])),
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created_at=int(value["created_at"]),
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note=str(value.get("note", "")),
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hidden=bool(value.get("hidden", False)),
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)
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class ManualLineStore:
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def __init__(self, path: str | Path):
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self.path = Path(path)
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self.lines: dict[str, ManualLine] = {line.id: line for line in self.load()}
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def load(self) -> list[ManualLine]:
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if not self.path.exists():
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return []
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payload = json.loads(self.path.read_text(encoding="utf-8"))
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return [ManualLine.from_dict(value) for value in payload]
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def save(self) -> None:
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self.path.parent.mkdir(parents=True, exist_ok=True)
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temporary = self.path.with_suffix(self.path.suffix + ".tmp")
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temporary.write_text(
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json.dumps(
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[line.to_dict() for line in self.lines.values()],
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indent=2,
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sort_keys=True,
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)
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+ "\n",
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encoding="utf-8",
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)
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temporary.replace(self.path)
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def add(self, line: ManualLine) -> ManualLine:
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self.lines[line.id] = line
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self.save()
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return line
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def update(self, line_id: str, changes: dict) -> ManualLine:
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if line_id not in self.lines:
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raise KeyError(line_id)
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line = replace(self.lines[line_id], **changes)
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self.lines[line_id] = line
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self.save()
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return line
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def delete(self, line_id: str) -> None:
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if line_id not in self.lines:
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raise KeyError(line_id)
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del self.lines[line_id]
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self.save()
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def levels(self) -> list[Level]:
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return [line.to_level() for line in self.lines.values()]
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