"""CLI script to create a ClickUp task in a client's Overall list.

Usage:
    uv run python scripts/create_clickup_task.py --name "Task" --client "Client"
    uv run python scripts/create_clickup_task.py --name "LB" --client "Acme" \\
        --category "Link Building" --due-date 2026-03-11 --tag feb26 \\
        --field "Keyword=some keyword" --field "CLIFlags=--tier1-count 5"
"""

from __future__ import annotations

import argparse
import json
import os
import sys
from datetime import UTC, datetime
from pathlib import Path

# Add project root to path so we can import cheddahbot
sys.path.insert(0, str(Path(__file__).resolve().parent.parent))

from dotenv import load_dotenv

from cheddahbot.clickup import ClickUpClient

DEFAULT_ASSIGNEE = 10765627  # Bryan Bigari


def _date_to_unix_ms(date_str: str) -> int:
    """Convert YYYY-MM-DD to Unix milliseconds (noon UTC).

    Noon UTC ensures the date displays correctly in US timezones.
    """
    dt = datetime.strptime(date_str, "%Y-%m-%d").replace(
        hour=12, tzinfo=UTC
    )
    return int(dt.timestamp() * 1000)


def _parse_time_estimate(s: str) -> int:
    """Parse a human time string like '2h', '30m', '1h30m' to ms."""
    import re

    total_min = 0
    match = re.match(r"(?:(\d+)h)?(?:(\d+)m)?$", s.strip())
    if not match or not any(match.groups()):
        raise ValueError(f"Invalid time estimate: '{s}' (use e.g. '2h', '30m', '1h30m')")
    if match.group(1):
        total_min += int(match.group(1)) * 60
    if match.group(2):
        total_min += int(match.group(2))
    return total_min * 60 * 1000


def main():
    load_dotenv()

    parser = argparse.ArgumentParser(description="Create a ClickUp task")
    parser.add_argument("--name", required=True, help="Task name")
    parser.add_argument(
        "--client", required=True, help="Client folder name"
    )
    parser.add_argument(
        "--category", default="", help="Work Category dropdown value"
    )
    parser.add_argument("--description", default="", help="Task description")
    parser.add_argument(
        "--status", default="to do", help="Initial status (default: 'to do')"
    )
    parser.add_argument(
        "--due-date", default="", help="Due date as YYYY-MM-DD"
    )
    parser.add_argument(
        "--tag", action="append", default=[], help="Tag (mmmYY, repeatable)"
    )
    parser.add_argument(
        "--field",
        action="append",
        default=[],
        help="Custom field as Name=Value (repeatable)",
    )
    parser.add_argument(
        "--priority",
        type=int,
        default=2,
        help="Priority: 1=Urgent, 2=High, 3=Normal, 4=Low (default: 2)",
    )
    parser.add_argument(
        "--assignee",
        type=int,
        action="append",
        default=[],
        help="ClickUp user ID (default: Bryan 10765627)",
    )
    parser.add_argument(
        "--time-estimate",
        default="",
        help="Time estimate (e.g. '2h', '30m', '1h30m')",
    )
    args = parser.parse_args()

    api_token = os.environ.get("CLICKUP_API_TOKEN", "")
    space_id = os.environ.get("CLICKUP_SPACE_ID", "")

    if not api_token:
        print("Error: CLICKUP_API_TOKEN not set", file=sys.stderr)
        sys.exit(1)
    if not space_id:
        print("Error: CLICKUP_SPACE_ID not set", file=sys.stderr)
        sys.exit(1)

    # Parse custom fields
    custom_fields: dict[str, str] = {}
    for f in args.field:
        if "=" not in f:
            print(f"Error: --field must be Name=Value, got: {f}", file=sys.stderr)
            sys.exit(1)
        name, value = f.split("=", 1)
        custom_fields[name] = value

    client = ClickUpClient(api_token=api_token)
    try:
        # Find the client's Overall list
        list_id = client.find_list_in_folder(space_id, args.client)
        if not list_id:
            msg = f"Error: No folder '{args.client}' with 'Overall' list"
            print(msg, file=sys.stderr)
            sys.exit(1)

        # Build create_task kwargs
        create_kwargs: dict = {
            "list_id": list_id,
            "name": args.name,
            "description": args.description,
            "status": args.status,
        }
        if args.due_date:
            create_kwargs["due_date"] = _date_to_unix_ms(args.due_date)
        if args.tag:
            create_kwargs["tags"] = args.tag
        create_kwargs["priority"] = args.priority
        create_kwargs["assignees"] = args.assignee or [DEFAULT_ASSIGNEE]
        if args.time_estimate:
            create_kwargs["time_estimate"] = _parse_time_estimate(
                args.time_estimate
            )

        # Create the task
        result = client.create_task(**create_kwargs)
        task_id = result.get("id", "")

        # Set Client dropdown field
        client.set_custom_field_smart(task_id, list_id, "Client", args.client)

        # Set Work Category if provided
        if args.category:
            client.set_custom_field_smart(
                task_id, list_id, "Work Category", args.category
            )

        # Set any additional custom fields
        for field_name, field_value in custom_fields.items():
            ok = client.set_custom_field_smart(
                task_id, list_id, field_name, field_value
            )
            if not ok:
                print(
                    f"Warning: Failed to set '{field_name}'",
                    file=sys.stderr,
                )

        print(json.dumps({
            "id": task_id,
            "name": args.name,
            "client": args.client,
            "url": result.get("url", ""),
            "status": args.status,
        }, indent=2))
    finally:
        client.close()


if __name__ == "__main__":
    main()