"""Render the Notes, Chat, and Daily-lower parity states without external network."""

from __future__ import annotations

import os
from pathlib import Path
from typing import Any

os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")

from PySide6.QtCore import QBuffer, QIODevice, QPointF, Qt, QTimer
from PySide6.QtGui import QColor, QFont, QFontDatabase, QImage, QPainter, QPen
from PySide6.QtWidgets import QApplication
from render_diagnosis_detail_visual import ScreenshotRepository, _run_immediately

from doctor_workstation.core import PermissionSet
from doctor_workstation.ui import diagnosis_drawer
from doctor_workstation.ui.dialogs import diagnosis as diagnosis_module
from doctor_workstation.ui.dialogs.diagnosis import DiagnosisDialog


class MediaScreenshotRepository(ScreenshotRepository):
    """Use the established artifact fixture with production-shaped media URLs."""

    def get_doctor_notes(self, diagnosis_id: int) -> list[dict[str, Any]]:
        notes = super().get_doctor_notes(diagnosis_id)
        notes[0]["tongue_images"] = [
            {"url": "https://media.example.invalid/diagnosis/501/tongue-7001.jpg"}
        ]
        return notes


def _image_bytes(kind: str) -> bytes:
    if kind == "tongue":
        image = QImage(240, 180, QImage.Format.Format_ARGB32)
        image.fill(QColor("#F4E3D8"))
        painter = QPainter(image)
        painter.setRenderHint(QPainter.RenderHint.Antialiasing)
        painter.setPen(QPen(QColor("#D1A08F"), 3))
        painter.setBrush(QColor("#D77F83"))
        painter.drawEllipse(52, 18, 136, 162)
        painter.setPen(QPen(QColor("#B75F65"), 2))
        painter.drawLine(120, 42, 120, 148)
        painter.setPen(QPen(QColor("#F7D8D2"), 10, Qt.PenStyle.SolidLine, Qt.PenCapStyle.RoundCap))
        painter.drawLine(91, 55, 103, 132)
        painter.drawLine(149, 55, 137, 132)
        painter.end()
    else:
        image = QImage(640, 360, QImage.Format.Format_ARGB32)
        image.fill(QColor("#F8FAFC"))
        painter = QPainter(image)
        painter.setRenderHint(QPainter.RenderHint.Antialiasing)
        painter.setPen(QPen(QColor("#DCE3EC"), 1))
        for x in range(48, 610, 70):
            painter.drawLine(x, 36, x, 316)
        for y in range(56, 310, 52):
            painter.drawLine(42, y, 606, y)
        points = [
            QPointF(48, 250),
            QPointF(125, 226),
            QPointF(205, 238),
            QPointF(285, 168),
            QPointF(365, 190),
            QPointF(445, 112),
            QPointF(525, 142),
            QPointF(602, 82),
        ]
        painter.setPen(QPen(QColor("#0F766E"), 7, Qt.PenStyle.SolidLine, Qt.PenCapStyle.RoundCap))
        for start, end in zip(points, points[1:], strict=False):
            painter.drawLine(start, end)
        painter.setPen(QPen(QColor("#FFFFFF"), 3))
        painter.setBrush(QColor("#0F766E"))
        for point in points:
            painter.drawEllipse(point, 8, 8)
        painter.end()
    buffer = QBuffer()
    if not buffer.open(QIODevice.OpenModeFlag.WriteOnly) or not image.save(buffer, "PNG"):
        raise RuntimeError("failed to encode deterministic visual image")
    return bytes(buffer.data())


TONGUE_IMAGE = _image_bytes("tongue")
CHAT_IMAGE = _image_bytes("chat")


def _offline_remote_load(self: diagnosis_drawer._RemoteImageButton, source: str) -> None:
    """Preserve asynchronous completion while replacing only external transport."""

    self._source = str(source).strip()
    generation = self._invalidate_request()
    self.setToolTip(self._source)
    self._show_loading()
    payload = TONGUE_IMAGE if self.objectName() == "DiagnosisTongueThumb" else CHAT_IMAGE
    QTimer.singleShot(0, lambda: self._apply_payload(payload, generation))


def _prepare_app() -> QApplication:
    app = QApplication.instance() or QApplication([])
    app.setFont(QFont("Microsoft YaHei", 9))
    font_path = Path("C:/Windows/Fonts/msyh.ttc")
    if font_path.is_file():
        font_id = QFontDatabase.addApplicationFont(str(font_path))
        families = QFontDatabase.applicationFontFamilies(font_id)
        if families:
            app.setFont(QFont(families[0], 9))
    return app


def _open_tab(app: QApplication, key: str) -> DiagnosisDialog:
    dialog = DiagnosisDialog(
        MediaScreenshotRepository(locked=False),
        permissions=PermissionSet(["*"]),
    )
    dialog.resize(1024, 640)
    dialog.open_for(501, editable=True)
    index = next(
        item for item in range(dialog.tabs.count()) if dialog.tabs.tabBar().tabData(item) == key
    )
    dialog.tabs.setCurrentIndex(index)
    for _ in range(10):
        app.processEvents()
    return dialog


def render() -> list[Path]:
    app = _prepare_app()
    diagnosis_module.run_async = _run_immediately
    diagnosis_drawer._RemoteImageButton.load_url = _offline_remote_load
    output = Path(__file__).resolve().parents[1] / "artifacts" / "diagnosis_visual"
    output.mkdir(parents=True, exist_ok=True)
    rendered: list[Path] = []

    for tab_key, state_name in (("notes", "notes_actions"), ("chat", "chat_archive")):
        dialog = _open_tab(app, tab_key)
        path = output / f"diagnosis_state_{state_name}_1024x640.png"
        if not dialog.grab().save(str(path), "PNG"):
            raise RuntimeError(f"failed to save {path}")
        rendered.append(path)
        dialog.close()
        app.processEvents()

    daily = _open_tab(app, "daily")
    page = daily._tab_pages["daily"]
    page.verticalScrollBar().setValue(page.verticalScrollBar().maximum())
    for _ in range(4):
        app.processEvents()
    daily_path = output / "diagnosis_state_daily_lower_1024x640.png"
    if not daily.grab().save(str(daily_path), "PNG"):
        raise RuntimeError(f"failed to save {daily_path}")
    rendered.append(daily_path)
    daily.close()
    app.processEvents()
    return rendered


if __name__ == "__main__":
    for rendered_path in render():
        print(rendered_path)