import json

from fastapi import HTTPException


def policy_row_to_dict(row) -> dict:
    if not row:
        return {
            "policy_seq": 1,
            "force_update": False,
            "allow_rollback": False,
            "offline_allowed": True,
            "valid_until": "2099-12-31T23:59:59Z",
            "min_supported_version": "",
            "disabled_versions": [],
            "git_tags_enabled": False,
            "message": "",
        }
    try:
        disabled = json.loads(row["disabled_versions"] or "[]")
    except (TypeError, json.JSONDecodeError):
        disabled = []
    return {
        "policy_seq": int(row["policy_seq"]),
        "force_update": bool(row["force_update"]),
        "allow_rollback": bool(row["allow_rollback"]),
        "offline_allowed": bool(row["offline_allowed"]),
        "valid_until": row["valid_until"],
        "min_supported_version": row["min_supported_version"] or "",
        "disabled_versions": disabled if isinstance(disabled, list) else [],
        "git_tags_enabled": bool(row["git_tags_enabled"]) if "git_tags_enabled" in row.keys() else False,
        "message": row["message"] or "",
    }


def validate_channel_code(code: str) -> bool:
    return bool(code) and len(code) <= 32 and code[0].isalnum() and all(c.isalnum() or c in "_-" for c in code)


def require_channel(conn, app_id: str, channel: str, require_enabled: bool = True):
    row = conn.execute("SELECT * FROM channels WHERE app_id=? AND channel_code=?", (app_id, channel)).fetchone()
    if not row:
        raise HTTPException(status_code=400, detail={"error": "channel_not_found", "msg": f"渠道 {channel} 不存在"})
    if require_enabled and not row["enabled"]:
        raise HTTPException(status_code=403, detail={"error": "channel_disabled", "msg": f"渠道 {channel} 已停用"})
    return row


def is_executable_path(path: str) -> bool:
    return path.lower().endswith((".exe", ".dll"))


def version_key(version: str):
    parts = []
    for part in version.split("."):
        digits = "".join(ch for ch in part if ch.isdigit())
        parts.append(int(digits) if digits else 0)
    return tuple(parts)