import json
from pathlib import Path

from app.core.config import (
    ALERT_TRIGGERS_DIR,
    CAPITAL_IMAGE_DIR,
    CAPITAL_IMAGE_UPLOADS_DIR,
    DAILY_STATS_DIR,
    MAIN_CAPITAL_FLOW_DIR,
    MAIN_CAPITAL_FLOW_UPLOADS_DIR,
    MINUTE_SNAPSHOTS_DIR,
    MONTHLY_STATS_DIR,
    PUSH_RECORDS_DIR,
    RAW_PAYLOADS_DIR,
    SOURCE_DIAGNOSTICS_FILE,
    SYSTEM_CONFIG_FILE,
    WEEKLY_STATS_DIR,
)


DEFAULT_SYSTEM_CONFIG = {
    "product_name": "南向资金监控平台",
    "timezone": "Asia/Shanghai",
    "source_name": "东方财富",
    "source_strategy": "已接入东方财富历史与实时公开接口；历史来自 datacenter-web，实时来自 push2。",
    "realtime_collection_interval_seconds": 60,
    "history_backfill_start_date": "2026-01-01",
    "threshold_step_hkd_billion": 50,
    "five_minute_flow_alert_hkd_billion": 15,
    "five_minute_window_minutes": 5,
    "five_minute_cooldown_minutes": 5,
    "email_enabled": False,
    "sender_email": "alerts@example.com",
    "smtp_username": "alerts@example.com",
    "smtp_password": "",
    "smtp_host": "smtp.example.com",
    "smtp_port": 465,
    "recipients": ["ops@example.com"],
    "storage_backend": "mysql",
    "mysql_enabled": False,
    "mysql_host": "127.0.0.1",
    "mysql_port": 3306,
    "mysql_database": "southbound_monitor",
    "mysql_username": "root",
    "mysql_password": "",
    "mysql_charset": "utf8mb4",
    "llm_provider": "openai_compatible",
    "llm_api_key": "",
    "llm_base_url": "https://api.openai.com/v1",
    "llm_vision_model": "gpt-4.1-mini",
    "etf_enabled": True,
    "etf_realtime_interval_seconds": 60,
    "etf_3min_change_alert_percent": 0.8,
    "etf_alert_cooldown_minutes": 10,
}


DEFAULT_SOURCE_DIAGNOSTICS = {
    "source_name": "东方财富",
    "realtime_available": False,
    "historical_available": False,
    "last_success_at": None,
    "last_failure_at": None,
    "last_error_reason": "尚未执行东方财富真实同步任务。",
    "last_success_url": None,
    "last_persisted_at": None,
}


DEFAULT_MINUTE_SNAPSHOT = {
    "trade_date": "2026-03-20",
    "snapshot_time": None,
    "market_state": "closed",
    "total_net_inflow": None,
    "cumulative_net_inflow": None,
    "shanghai_net_inflow": None,
    "shenzhen_net_inflow": None,
    "buy_amount": None,
    "sell_amount": None,
    "net_buy_amount": None,
    "one_min_change": None,
    "five_min_change": None,
    "precision": "unavailable",
    "source_name": "东方财富",
    "source_url": None,
    "updated_at": None,
    "unavailable_reason": "尚未获取到今天的实时快照数据。",
    "threshold_progress": 0.0,
    "next_threshold_hkd_billion": 50,
    "minute_timeline": [],
}


DEFAULT_DAILY_STATS = {
    "start_date": "2026-01-01",
    "daily": [],
    "weekly": [],
    "monthly": [],
    "cumulative": [],
    "recent_trade_days": [],
    "summary": {
        "cumulative_net_inflow_hkd_billion": 0,
        "trading_day_count": 0,
        "max_single_day_inflow_hkd_billion": 0,
        "max_single_day_outflow_hkd_billion": 0,
        "longest_inflow_streak": 0,
        "longest_outflow_streak": 0,
    },
}


DEFAULT_PUSH_RECORDS = {"records": []}


def _ensure_json(path: Path, payload: dict) -> None:
    if path.exists():
        return
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")


def bootstrap_data() -> None:
    for directory in [
        MINUTE_SNAPSHOTS_DIR,
        DAILY_STATS_DIR,
        WEEKLY_STATS_DIR,
        MONTHLY_STATS_DIR,
        PUSH_RECORDS_DIR,
        ALERT_TRIGGERS_DIR,
        RAW_PAYLOADS_DIR,
        CAPITAL_IMAGE_DIR,
        CAPITAL_IMAGE_UPLOADS_DIR,
        MAIN_CAPITAL_FLOW_DIR,
        MAIN_CAPITAL_FLOW_UPLOADS_DIR,
    ]:
        directory.mkdir(parents=True, exist_ok=True)

    _ensure_json(SYSTEM_CONFIG_FILE, DEFAULT_SYSTEM_CONFIG)
    _ensure_json(SOURCE_DIAGNOSTICS_FILE, DEFAULT_SOURCE_DIAGNOSTICS)
    _ensure_json(MINUTE_SNAPSHOTS_DIR / "2026-03-20.json", DEFAULT_MINUTE_SNAPSHOT)
    _ensure_json(DAILY_STATS_DIR / "summary.json", DEFAULT_DAILY_STATS)
    _ensure_json(PUSH_RECORDS_DIR / "records.json", DEFAULT_PUSH_RECORDS)