"""数据同步调度中心模块。

该模块作为数据同步的调度中心，统一管理各类型数据的同步流程。
具体的同步逻辑已迁移到对应的 api_xxx.py 文件中：
- api_daily.py: 日线数据同步 (DailySync 类)
- api_bak_basic.py: 历史股票列表同步 (BakBasicSync 类)
- api_pro_bar.py: Pro Bar 数据同步 (ProBarSync 类)
- api_stock_basic.py: 股票基本信息同步
- api_trade_cal.py: 交易日历同步

注意：名称变更 (namechange) 已从自动同步中移除，
因为股票名称变更不频繁，建议手动定期同步。

使用方式：
    # 预览同步（检查数据量，不写入）
    from src.data.sync import preview_sync
    preview = preview_sync()

    # 同步所有数据（不包括 namechange）
    from src.data.sync import sync_all_data
    result = sync_all_data()

    # 强制全量重载
    result = sync_all_data(force_full=True)
"""

from typing import Optional, Dict

import pandas as pd

from src.data.api_wrappers import sync_all_stocks
from src.data.api_wrappers.api_daily import sync_daily, preview_daily_sync
from src.data.api_wrappers.api_pro_bar import sync_pro_bar
from src.data.api_wrappers.api_bak_basic import sync_bak_basic


def preview_sync(
    force_full: bool = False,
    start_date: Optional[str] = None,
    end_date: Optional[str] = None,
    sample_size: int = 3,
    max_workers: Optional[int] = None,
) -> dict:
    """预览日线同步数据量和样本（不实际同步）。

    这是推荐的方式，可在实际同步前检查将要同步的内容。

    Args:
        force_full: 若为 True，预览全量同步（从 20180101）
        start_date: 手动指定起始日期（覆盖自动检测）
        end_date: 手动指定结束日期（默认为今天）
        sample_size: 预览用样本股票数量（默认: 3）
        max_workers: 工作线程数（默认: 10）

    Returns:
        包含预览信息的字典：
        {
            'sync_needed': bool,
            'stock_count': int,
            'start_date': str,
            'end_date': str,
            'estimated_records': int,
            'sample_data': pd.DataFrame,
            'mode': str,  # 'full', 'incremental', 'partial', 或 'none'
        }

    Example:
        >>> # 预览将要同步的内容
        >>> preview = preview_sync()
        >>>
        >>> # 预览全量同步
        >>> preview = preview_sync(force_full=True)
        >>>
        >>> # 预览更多样本
        >>> preview = preview_sync(sample_size=5)
    """
    return preview_daily_sync(
        force_full=force_full,
        start_date=start_date,
        end_date=end_date,
        sample_size=sample_size,
    )


def sync_all(
    force_full: bool = False,
    start_date: Optional[str] = None,
    end_date: Optional[str] = None,
    max_workers: Optional[int] = None,
    dry_run: bool = False,
) -> Dict[str, pd.DataFrame]:
    """同步所有股票的日线数据。

    这是日线数据同步的主要入口点。

    Args:
        force_full: 若为 True，强制从 20180101 完整重载
        start_date: 手动指定起始日期（YYYYMMDD）
        end_date: 手动指定结束日期（默认为今天）
        max_workers: 工作线程数（默认: 10）
        dry_run: 若为 True，仅预览将要同步的内容，不写入数据

    Returns:
        映射 ts_code 到 DataFrame 的字典

    Example:
        >>> # 首次同步（从 20180101 全量加载）
        >>> result = sync_all()
        >>>
        >>> # 后续同步（增量 - 仅新数据）
        >>> result = sync_all()
        >>>
        >>> # 强制完整重载
        >>> result = sync_all(force_full=True)
        >>>
        >>> # 手动指定日期范围
        >>> result = sync_all(start_date='20240101', end_date='20240131')
        >>>
        >>> # 自定义线程数
        >>> result = sync_all(max_workers=20)
        >>>
        >>> # Dry run（仅预览）
        >>> result = sync_all(dry_run=True)
    """
    return sync_daily(
        force_full=force_full,
        start_date=start_date,
        end_date=end_date,
        max_workers=max_workers,
        dry_run=dry_run,
    )


def sync_all_data(
    force_full: bool = False,
    max_workers: Optional[int] = None,
    dry_run: bool = False,
) -> Dict[str, pd.DataFrame]:
    """同步所有数据类型（每日同步）。

    该函数按顺序同步所有可用的数据类型：
    1. 交易日历 (sync_trade_cal_cache)
    2. 股票基本信息 (sync_all_stocks)
    3. Pro Bar 数据 (sync_pro_bar)
    4. 历史股票列表 (sync_bak_basic)

    注意：名称变更 (namechange) 不在自动同步中，如需同步请手动调用。

    Args:
        force_full: 若为 True，强制所有数据类型完整重载
        max_workers: 日线数据同步的工作线程数（默认: 10）
        dry_run: 若为 True，仅显示将要同步的内容，不写入数据

    Returns:
        映射数据类型到同步结果的字典

    Example:
        >>> result = sync_all_data()
        >>>
        >>> # 强制完整重载
        >>> result = sync_all_data(force_full=True)
        >>>
        >>> # Dry run
        >>> result = sync_all_data(dry_run=True)
    """
    results: Dict[str, pd.DataFrame] = {}

    print("\n" + "=" * 60)
    print("[sync_all_data] Starting full data synchronization...")
    print("=" * 60)

    # 1. Sync trade calendar (always needed first)
    print("\n[1/4] Syncing trade calendar cache...")
    try:
        from src.data.api_wrappers import sync_trade_cal_cache

        sync_trade_cal_cache()
        results["trade_cal"] = pd.DataFrame()
        print("[1/4] Trade calendar: OK")
    except Exception as e:
        print(f"[1/4] Trade calendar: FAILED - {e}")
        results["trade_cal"] = pd.DataFrame()

    # 2. Sync stock basic info
    print("\n[2/4] Syncing stock basic info...")
    try:
        sync_all_stocks()
        results["stock_basic"] = pd.DataFrame()
        print("[2/4] Stock basic: OK")
    except Exception as e:
        print(f"[2/4] Stock basic: FAILED - {e}")
        results["stock_basic"] = pd.DataFrame()

    # 3. Sync Pro Bar data
    print("\n[3/4] Syncing Pro Bar data (with adj, tor, vr)...")
    try:
        pro_bar_result = sync_pro_bar(
            force_full=force_full,
            max_workers=max_workers,
            dry_run=dry_run,
        )
        results["pro_bar"] = (
            pd.concat(pro_bar_result.values(), ignore_index=True)
            if pro_bar_result
            else pd.DataFrame()
        )
        print(f"[3/4] Pro Bar data: OK ({len(results['pro_bar'])} records)")
    except Exception as e:
        print(f"[3/4] Pro Bar data: FAILED - {e}")
        results["pro_bar"] = pd.DataFrame()

    # 4. Sync stock historical list (bak_basic)
    print("\n[4/4] Syncing stock historical list (bak_basic)...")
    try:
        bak_basic_result = sync_bak_basic(force_full=force_full)
        results["bak_basic"] = bak_basic_result
        print(f"[4/4] Bak basic: OK ({len(bak_basic_result)} records)")
    except Exception as e:
        print(f"[4/4] Bak basic: FAILED - {e}")
        results["bak_basic"] = pd.DataFrame()

    # Summary
    print("\n" + "=" * 60)
    print("[sync_all_data] Sync Summary")
    print("=" * 60)
    for data_type, df in results.items():
        print(f"  {data_type}: {len(df)} records")
    print("=" * 60)
    print("\nNote: namechange is NOT in auto-sync. To sync manually:")
    print("  from src.data.api_wrappers import sync_namechange")
    print("  sync_namechange(force=True)")

    return results


if __name__ == "__main__":
    print("=" * 60)
    print("Data Sync Module")
    print("=" * 60)
    print("\nUsage:")
    print("  # Sync all data types at once (RECOMMENDED)")
    print("  from src.data.sync import sync_all_data")
    print("  result = sync_all_data()  # Incremental sync all")
    print("  result = sync_all_data(force_full=True)  # Full reload")
    print("")
    print("  # Or sync individual data types:")
    print("  from src.data.sync import sync_all, preview_sync")
    print("  from src.data.sync import sync_bak_basic")
    print("")
    print("  # Preview before sync (recommended)")
    print("  preview = preview_sync()")
    print("")
    print("  # Dry run (preview only)")
    print("  result = sync_all(dry_run=True)")
    print("")
    print("  # Actual sync")
    print("  result = sync_all()  # Incremental sync")
    print("  result = sync_all(force_full=True)  # Full reload")
    print("")
    print("  # bak_basic sync")
    print("  result = sync_bak_basic()  # Incremental sync")
    print("  result = sync_bak_basic(force_full=True)  # Full reload")
    print("\n" + "=" * 60)

    # Run sync_all_data by default
    print("\n[Main] Running sync_all_data()...")
    result = sync_all_data()
    print("\n[Main] Sync completed!")
    print(f"Total data types synced: {len(result)}")