from __future__ import annotations

import argparse
import os
import sys
from pathlib import Path


def bootstrap_prefect_env() -> None:
    env_file = Path(__file__).resolve().parent / ".env"
    if not env_file.exists():
        return
    for raw_line in env_file.read_text(encoding="utf-8").splitlines():
        line = raw_line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        key = key.strip()
        if key.startswith("PREFECT_"):
            os.environ.setdefault(key, value.strip())


bootstrap_prefect_env()

from prefect import flow, task

from inventory_analytics.channel_inventory_sync.entrypoint import main as channel_inventory_sync_main
from inventory_analytics.batch_inventory_report.cli import main as batch_inventory_report_main


@task(name="run-channel-inventory-sync")
def run_channel_inventory_sync_task() -> None:
    original_argv = sys.argv[:]
    try:
        sys.argv = ["sync_channel_inventory.py", "--action", "all"]
        exit_code = channel_inventory_sync_main()
    finally:
        sys.argv = original_argv
    if exit_code != 0:
        raise RuntimeError(f"渠道库存统计执行失败，退出码: {exit_code}")


@task(name="run-batch-inventory-report")
def run_batch_inventory_report_task(output: str = "", feishu_table: str = "批次库存", skip_feishu_sync: bool = False) -> None:
    original_argv = sys.argv[:]
    try:
        sys.argv = ["generate_batch_inventory_report.py"]
        if output:
            sys.argv.extend(["--output", output])
        if feishu_table:
            sys.argv.extend(["--feishu-table", feishu_table])
        if skip_feishu_sync:
            sys.argv.append("--skip-feishu-sync")
        exit_code = batch_inventory_report_main()
    finally:
        sys.argv = original_argv
    if exit_code != 0:
        raise RuntimeError(f"批次库存统计报表执行失败，退出码: {exit_code}")


@flow(name="inventory-channel-inventory-sync")
def inventory_channel_inventory_sync_flow() -> None:
    run_channel_inventory_sync_task()


@flow(name="inventory-batch-inventory-report")
def inventory_batch_inventory_report_flow(
    output: str = "",
    feishu_table: str = "批次库存",
    skip_feishu_sync: bool = False,
) -> None:
    run_batch_inventory_report_task(output=output, feishu_table=feishu_table, skip_feishu_sync=skip_feishu_sync)


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description="Prefect 调度：每天 09:15 执行渠道库存统计和批次库存统计写飞书。")
    parser.add_argument("--serve-channel-inventory-sync", action="store_true", help="启动渠道库存统计 flow 的本地 serve 调度")
    parser.add_argument("--serve-batch-inventory-report", action="store_true", help="启动批次库存统计 flow 的本地 serve 调度")
    parser.add_argument("--run-channel-inventory-sync", action="store_true", help="立即执行一次渠道库存统计 flow")
    parser.add_argument("--run-batch-inventory-report", action="store_true", help="立即执行一次批次库存统计 flow")
    parser.add_argument("--output", default="", help="批次库存统计输出路径，可选")
    parser.add_argument("--feishu-table", default="批次库存", help="批次库存统计同步目标飞书表名")
    parser.add_argument("--skip-feishu-sync", action="store_true", help="批次库存统计只生成本地文件，不写飞书")
    return parser.parse_args()


def main() -> None:
    args = parse_args()
    flow_kwargs = {
        "output": args.output,
        "feishu_table": args.feishu_table,
        "skip_feishu_sync": args.skip_feishu_sync,
    }
    if args.serve_channel_inventory_sync:
        inventory_channel_inventory_sync_flow.serve(
            name="inventory-channel-inventory-sync-daily-0915",
            cron="15 9 * * *",
            tags=["inventory", "feishu", "channel-inventory-sync"],
        )
        return
    if args.serve_batch_inventory_report:
        inventory_batch_inventory_report_flow.serve(
            name="inventory-batch-inventory-report-daily-0915",
            cron="15 9 * * *",
            parameters=flow_kwargs,
            tags=["inventory", "feishu", "batch-inventory-report"],
        )
        return
    if args.run_channel_inventory_sync:
        inventory_channel_inventory_sync_flow()
        return
    if args.run_batch_inventory_report:
        inventory_batch_inventory_report_flow(**flow_kwargs)
        return
    inventory_channel_inventory_sync_flow()
    inventory_batch_inventory_report_flow(**flow_kwargs)


if __name__ == "__main__":
    main()