"""
PregoPal - 预设文件写入插件
===========================
将今日简报写入 data/presets/ 目录，供次日使用。
"""

import json
import datetime
from pathlib import Path
from plugins.base import LoopPlugin, PluginResult, LoopStage, LoopContext
from loop import DailyStatus

PRESETS_DIR = Path("data/presets")


class PresetWriterPlugin(LoopPlugin):
    """生成明日预设文件"""

    def stage(self) -> LoopStage:
        return LoopStage.CONSOLIDATE

    def name(self) -> str:
        return "preset_writer"

    async def run(self, ctx: LoopContext) -> PluginResult:
        PRESETS_DIR.mkdir(parents=True, exist_ok=True)

        today = datetime.date.today().isoformat()
        tomorrow = (datetime.date.today() + datetime.timedelta(days=1)).isoformat()

        # 构建明日预设
        preset = {
            "date": tomorrow,
            "generated_from": today,
            "generated_at": datetime.datetime.now().isoformat(),
            "trimester": ctx.briefing.get("trimester", "孕中期"),
            "nutrient_focus": ctx.briefing.get("nutrient_focus", []),
            "recommended_foods": ctx.briefing.get("recommended_foods", []),
            "need_ask_weight": ctx.briefing.get("need_ask_weight", False),
            "need_ask_recipe": ctx.briefing.get("need_ask_recipe", False),
            "conversation_topics": ctx.briefing.get("conversation_topics", []),
            "family_memory_summary": str(ctx.briefing.get("family_memory", {})),
            "three_day_summary": ctx.briefing.get("three_day_summary", {}),
        }

        # 写入文件
        preset_file = PRESETS_DIR / f"今日简报_{tomorrow}.json"
        with open(preset_file, 'w', encoding='utf-8') as f:
            json.dump(preset, f, ensure_ascii=False, indent=2)

        # 标记今日总结完成
        DailyStatus.mark_summary_done()

        return PluginResult(
            success=True,
            data={"preset_file": str(preset_file)},
            message=f"明日预设已写入 {preset_file.name}"
        )