Add initial backend structure with models, utilities, and settings management
- Introduced .gitignore to exclude common Python artifacts and IDE files. - Added contour models for contour generation. - Implemented cryptographic utilities for data encryption and decryption. - Created CSV metadata model for handling wafer data. - Developed time-indexed data segment model. - Established local settings model for application configuration. - Added Z-wafer data models and parser for CSV file handling. - Implemented Marching Squares algorithm for contour generation.
This commit is contained in:
Jack.Le
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from __future__ import annotations
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from copy import deepcopy
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from pathlib import Path
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from typing import Any
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from PySide6.QtCore import QObject, Property, QDateTime, QStandardPaths, Signal, Slot
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from backend.local_settings import LocalSettings
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MASTER_FAMILIES = ("A", "B", "C", "D", "E", "F", "P", "X", "Z")
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class LocalSettingsModel(QObject):
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chamberIdChanged = Signal()
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reverseZWaferChanged = Signal()
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debugModeChanged = Signal()
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waferReadTimeoutChanged = Signal()
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waferDetectTimeoutChanged = Signal()
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waferRetriesChanged = Signal()
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mastersChanged = Signal()
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isDirtyChanged = Signal()
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isValidChanged = Signal()
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validationMessageChanged = Signal()
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saveStatusChanged = Signal()
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lastSavedAtChanged = Signal()
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def __init__(self, parent: QObject | None = None) -> None:
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super().__init__(parent)
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self._data_dir = self._resolve_data_dir()
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self._defaults = self._new_defaults()
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self._chamber_id = self._defaults["chamberId"]
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self._reverse_z_wafer = self._defaults["reverseZWafer"]
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self._debug_mode = self._defaults["debugMode"]
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self._wafer_read_timeout = self._defaults["waferReadTimeout"]
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self._wafer_detect_timeout = self._defaults["waferDetectTimeout"]
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self._wafer_retries = self._defaults["waferRetries"]
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self._masters = deepcopy(self._defaults["masters"])
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self._is_dirty = False
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self._is_valid = True
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self._validation_message = ""
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self._save_status = "Ready"
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self._last_saved_at = ""
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self._saved_snapshot = self._snapshot()
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self._recompute_derived()
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def _resolve_data_dir(self) -> Path:
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documents_dir = QStandardPaths.writableLocation(QStandardPaths.DocumentsLocation)
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base_dir = Path(documents_dir) if documents_dir else (Path.home() / "Documents")
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return base_dir / "isc_data"
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def _new_defaults(self) -> dict[str, Any]:
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return {
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"chamberId": "2",
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"reverseZWafer": True,
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"debugMode": False,
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"waferReadTimeout": 120000,
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"waferDetectTimeout": 5000,
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"waferRetries": 8,
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"masters": {family: "" for family in MASTER_FAMILIES},
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}
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def _snapshot(self) -> dict[str, Any]:
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return {
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"chamberId": self._chamber_id,
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"reverseZWafer": self._reverse_z_wafer,
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"debugMode": self._debug_mode,
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"waferReadTimeout": self._wafer_read_timeout,
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"waferDetectTimeout": self._wafer_detect_timeout,
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"waferRetries": self._wafer_retries,
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"masters": deepcopy(self._masters),
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}
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def _set_is_dirty(self, value: bool) -> None:
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if self._is_dirty != value:
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self._is_dirty = value
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self.isDirtyChanged.emit()
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def _set_is_valid(self, value: bool) -> None:
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if self._is_valid != value:
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self._is_valid = value
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self.isValidChanged.emit()
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def _set_validation_message(self, value: str) -> None:
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if self._validation_message != value:
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self._validation_message = value
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self.validationMessageChanged.emit()
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def _set_save_status(self, value: str) -> None:
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if self._save_status != value:
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self._save_status = value
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self.saveStatusChanged.emit()
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def _set_last_saved_at(self, value: str) -> None:
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if self._last_saved_at != value:
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self._last_saved_at = value
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self.lastSavedAtChanged.emit()
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def _validate(self) -> str:
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if not self._chamber_id.strip():
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return "Chamber ID is required."
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if self._wafer_retries < 0 or self._wafer_retries > 10:
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return "Retries must be between 0 and 10."
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if self._wafer_read_timeout < 100 or self._wafer_read_timeout > 300000:
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return "Read timeout must be between 100 and 300000 ms."
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if self._wafer_detect_timeout < 100 or self._wafer_detect_timeout > 300000:
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return "Detect timeout must be between 100 and 300000 ms."
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for family, path_text in self._masters.items():
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cleaned = path_text.strip()
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if not cleaned:
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continue
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path = Path(cleaned)
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if path.suffix.lower() != ".csv":
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return f"Master {family} must point to a CSV file."
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if not path.exists():
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return f"Master {family} file was not found."
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return ""
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def _recompute_derived(self) -> None:
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message = self._validate()
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self._set_is_valid(message == "")
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self._set_validation_message(message)
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self._set_is_dirty(self._snapshot() != self._saved_snapshot)
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def _emit_all_changed(self) -> None:
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self.chamberIdChanged.emit()
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self.reverseZWaferChanged.emit()
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self.debugModeChanged.emit()
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self.waferReadTimeoutChanged.emit()
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self.waferDetectTimeoutChanged.emit()
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self.waferRetriesChanged.emit()
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self.mastersChanged.emit()
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def _to_local_settings(self) -> LocalSettings:
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settings = LocalSettings()
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settings.chamber_id = self._chamber_id
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settings.reverse_z_wafer = self._reverse_z_wafer
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settings.debug = self._debug_mode
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settings.wafer_read_timeout = self._wafer_read_timeout
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settings.wafer_detect_timeout = self._wafer_detect_timeout
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settings.wafer_read_retries = self._wafer_retries
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settings.master = deepcopy(self._masters)
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return settings
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@Property(str, notify=chamberIdChanged)
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def chamberId(self) -> str:
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return self._chamber_id
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@chamberId.setter
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def chamberId(self, value: str) -> None:
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next_value = str(value).strip()
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if self._chamber_id == next_value:
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return
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self._chamber_id = next_value
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self.chamberIdChanged.emit()
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self._recompute_derived()
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@Property(bool, notify=reverseZWaferChanged)
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def reverseZWafer(self) -> bool:
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return self._reverse_z_wafer
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@reverseZWafer.setter
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def reverseZWafer(self, value: bool) -> None:
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if self._reverse_z_wafer == value:
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return
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self._reverse_z_wafer = bool(value)
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self.reverseZWaferChanged.emit()
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self._recompute_derived()
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@Property(bool, notify=debugModeChanged)
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def debugMode(self) -> bool:
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return self._debug_mode
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@debugMode.setter
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def debugMode(self, value: bool) -> None:
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if self._debug_mode == value:
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return
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self._debug_mode = bool(value)
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self.debugModeChanged.emit()
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self._recompute_derived()
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@Property(int, notify=waferReadTimeoutChanged)
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def waferReadTimeout(self) -> int:
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return self._wafer_read_timeout
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@waferReadTimeout.setter
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def waferReadTimeout(self, value: int) -> None:
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if self._wafer_read_timeout == value:
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return
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self._wafer_read_timeout = int(value)
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self.waferReadTimeoutChanged.emit()
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self._recompute_derived()
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@Property(int, notify=waferDetectTimeoutChanged)
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def waferDetectTimeout(self) -> int:
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return self._wafer_detect_timeout
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@waferDetectTimeout.setter
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def waferDetectTimeout(self, value: int) -> None:
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if self._wafer_detect_timeout == value:
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return
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self._wafer_detect_timeout = int(value)
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self.waferDetectTimeoutChanged.emit()
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self._recompute_derived()
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@Property(int, notify=waferRetriesChanged)
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def waferRetries(self) -> int:
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return self._wafer_retries
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@waferRetries.setter
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def waferRetries(self, value: int) -> None:
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if self._wafer_retries == value:
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return
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self._wafer_retries = int(value)
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self.waferRetriesChanged.emit()
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self._recompute_derived()
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@Property("QVariantMap", notify=mastersChanged)
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def masters(self) -> dict[str, str]:
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return dict(self._masters)
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@Property(bool, notify=isDirtyChanged)
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def isDirty(self) -> bool:
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return self._is_dirty
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@Property(bool, notify=isValidChanged)
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def isValid(self) -> bool:
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return self._is_valid
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@Property(str, notify=validationMessageChanged)
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def validationMessage(self) -> str:
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return self._validation_message
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@Property(str, notify=saveStatusChanged)
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def saveStatus(self) -> str:
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return self._save_status
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@Property(str, notify=lastSavedAtChanged)
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def lastSavedAt(self) -> str:
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return self._last_saved_at
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@Property(str, notify=saveStatusChanged)
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def settingsFilePath(self) -> str:
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return str(self._data_dir / "settings.json")
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@Slot()
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def loadSettings(self) -> None:
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loaded = LocalSettings.read_settings(str(self._data_dir))
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self._chamber_id = str(loaded.chamber_id).strip() or str(self._defaults["chamberId"])
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self._reverse_z_wafer = bool(loaded.reverse_z_wafer)
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self._debug_mode = bool(loaded.debug)
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self._wafer_read_timeout = int(loaded.wafer_read_timeout)
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self._wafer_detect_timeout = int(loaded.wafer_detect_timeout)
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self._wafer_retries = int(loaded.wafer_read_retries)
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masters = {family: "" for family in MASTER_FAMILIES}
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for family, value in loaded.master.items():
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normalized = str(family).strip().upper()
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if normalized in masters:
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masters[normalized] = str(value).strip()
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self._masters = masters
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self._saved_snapshot = self._snapshot()
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self._emit_all_changed()
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self._recompute_derived()
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self._set_save_status("Loaded settings")
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@Slot()
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def saveSettings(self) -> None:
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self._recompute_derived()
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if not self._is_valid:
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self._set_save_status("error: invalid settings")
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return
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try:
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LocalSettings.save_settings(str(self._data_dir), self._to_local_settings())
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self._saved_snapshot = self._snapshot()
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self._recompute_derived()
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self._set_save_status("Saved")
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timestamp = QDateTime.currentDateTime().toString("yyyy-MM-dd HH:mm:ss")
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self._set_last_saved_at(timestamp)
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except Exception as exc: # pragma: no cover - defensive
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self._set_save_status(f"error: {exc}")
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@Slot()
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def revertChanges(self) -> None:
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snap = self._saved_snapshot
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self._chamber_id = str(snap["chamberId"])
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self._reverse_z_wafer = bool(snap["reverseZWafer"])
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self._debug_mode = bool(snap["debugMode"])
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self._wafer_read_timeout = int(snap["waferReadTimeout"])
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self._wafer_detect_timeout = int(snap["waferDetectTimeout"])
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self._wafer_retries = int(snap["waferRetries"])
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self._masters = deepcopy(snap["masters"])
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self._emit_all_changed()
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self._recompute_derived()
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self._set_save_status("Reverted unsaved changes")
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@Slot()
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def resetDefaults(self) -> None:
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self._chamber_id = str(self._defaults["chamberId"])
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self._reverse_z_wafer = bool(self._defaults["reverseZWafer"])
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self._debug_mode = bool(self._defaults["debugMode"])
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self._wafer_read_timeout = int(self._defaults["waferReadTimeout"])
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self._wafer_detect_timeout = int(self._defaults["waferDetectTimeout"])
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self._wafer_retries = int(self._defaults["waferRetries"])
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self._masters = deepcopy(self._defaults["masters"])
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self._emit_all_changed()
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self._recompute_derived()
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self._set_save_status("Defaults restored (not saved)")
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@Slot(str, str)
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def setMaster(self, family: str, file_path: str) -> None:
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normalized = family.strip().upper()
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if normalized not in self._masters:
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return
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next_path = file_path.strip()
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if self._masters[normalized] == next_path:
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return
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self._masters[normalized] = next_path
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self.mastersChanged.emit()
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self._recompute_derived()
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@Slot(str)
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def clearMaster(self, family: str) -> None:
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self.setMaster(family, "")
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@Slot(str)
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def setChamberId(self, value: str) -> None:
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self.chamberId = value
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@Slot(bool)
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def setReverseZWafer(self, value: bool) -> None:
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self.reverseZWafer = value
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@Slot(bool)
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def setDebugMode(self, value: bool) -> None:
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self.debugMode = value
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@Slot(int)
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def setWaferReadTimeout(self, value: int) -> None:
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self.waferReadTimeout = value
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@Slot(int)
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def setWaferDetectTimeout(self, value: int) -> None:
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self.waferDetectTimeout = value
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@Slot(int)
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def setWaferRetries(self, value: int) -> None:
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self.waferRetries = value
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