# =================== AIPass ====================
# Name: dev_pr_handler.py
# Description: Dev branch PR handler — push dev and create PR to main
# Version: 1.0.0
# Created: 2026-05-12
# Modified: 2026-05-12
# =============================================

"""Dev branch PR handler — push dev and create PR to main."""

from __future__ import annotations

import subprocess

from aipass.prax import logger
from aipass.drone.apps.handlers.json import json_handler
from aipass.drone.apps.handlers.git.lock_handler import find_repo_root


def create_dev_pr(description: str) -> dict:
    """Push dev branch and create a PR to main.

    Verifies HEAD is on dev, pushes to origin, then creates a PR via gh CLI.

    Returns:
        Dict with success, message, and pr_url keys.
    """
    repo_root = find_repo_root()

    try:
        head = subprocess.run(
            ["git", "rev-parse", "--abbrev-ref", "HEAD"],
            capture_output=True,
            text=True,
            cwd=str(repo_root),
        )
    except (OSError, subprocess.SubprocessError) as exc:
        logger.error("Failed to detect current branch: %s", exc)
        return {"success": False, "message": f"Failed to detect current branch: {exc}", "pr_url": ""}

    current_branch = head.stdout.strip()
    if current_branch != "dev":
        return {
            "success": False,
            "message": f"Not on dev branch (current: {current_branch}). Switch to dev first.",
            "pr_url": "",
        }

    try:
        push = subprocess.run(
            ["git", "push", "origin", "dev"],
            capture_output=True,
            text=True,
            cwd=str(repo_root),
        )
    except (OSError, subprocess.SubprocessError) as exc:
        logger.error("git push origin dev failed: %s", exc)
        return {"success": False, "message": f"Push failed: {exc}", "pr_url": ""}

    if push.returncode != 0:
        return {"success": False, "message": f"Push failed: {push.stderr.strip()}", "pr_url": ""}

    try:
        pr = subprocess.run(
            ["gh", "pr", "create", "--head", "dev", "--base", "main", "--title", description],
            capture_output=True,
            text=True,
            cwd=str(repo_root),
        )
    except FileNotFoundError as exc:
        logger.warning("gh CLI not found: %s", exc)
        return {"success": False, "message": "gh CLI not found. Install: https://cli.github.com/", "pr_url": ""}
    except (OSError, subprocess.SubprocessError) as exc:
        logger.error("gh pr create failed: %s", exc)
        return {"success": False, "message": f"PR creation failed: {exc}", "pr_url": ""}

    if pr.returncode != 0:
        return {"success": False, "message": f"PR creation failed: {pr.stderr.strip()}", "pr_url": ""}

    pr_url = pr.stdout.strip()
    json_handler.log_operation("create_dev_pr", {"pr_url": pr_url, "description": description})
    logger.info("Dev PR created: %s", pr_url)

    return {"success": True, "message": f"PR created: {pr_url}", "pr_url": pr_url}