"""Stage 8: Publisher — Create branch, commit, open PR on Gitea."""
import json
import subprocess
import os
import tempfile
import shutil
import datetime

def publish_skill(review_result, config):
    """
    Publish approved skill to Gitea repo via git branch + PR.
    Nothing is merged automatically — human approves.
    """
    if review_result.get("status") != "APPROVED":
        return {
            "status": "BLOCKED",
            "reason": f"Review result: {review_result.get('status', 'unknown')} — {review_result.get('reason', '')}",
        }

    gitea_config = config.get("gitea", {})
    token = gitea_config.get("token", "")
    base_url = gitea_config.get("base_url", "http://localhost:3000")
    owner = gitea_config.get("owner", "tonyjbala")
    repo_name = gitea_config.get("repo", "agent-skills")
    clone_url = gitea_config.get("clone_url", f"{base_url}/{owner}/{repo_name}.git")

    gen = review_result.get("generator_output", {})
    skill_name = gen.get("skill_name", "unknown")
    files = gen.get("files", {})

    # Create branch name
    ts = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
    branch_name = f"skill/{skill_name}-{ts}"

    with tempfile.TemporaryDirectory() as tmpdir:
        # Clone repo
        repo_dir = os.path.join(tmpdir, "agent-skills")
        result = subprocess.run(
            ["git", "clone", "--branch", "main", "--single-branch", clone_url, repo_dir],
            capture_output=True, text=True, timeout=30
        )
        if result.returncode != 0:
            # Try without --branch (might not exist yet)
            result = subprocess.run(
                ["git", "clone", clone_url, repo_dir],
                capture_output=True, text=True, timeout=30
            )
            if result.returncode != 0:
                return {
                    "status": "CLONE_ERROR",
                    "error": result.stderr[:500],
                }

        # Configure git
        subprocess.run(["git", "config", "user.email", "hermes@agent.local"], cwd=repo_dir)
        subprocess.run(["git", "config", "user.name", "Hermes Pipeline"], cwd=repo_dir)

        # Create skill directory
        skill_dir = os.path.join(repo_dir, "skills", skill_name)
        os.makedirs(skill_dir, exist_ok=True)

        # Write files
        for filename, content in files.items():
            filepath = os.path.join(skill_dir, filename)
            with open(filepath, 'w') as f:
                f.write(content)

        # Add and commit
        subprocess.run(["git", "add", "."], cwd=repo_dir, capture_output=True)
        subprocess.run(
            ["git", "commit", "-m", f"Add Skill: {skill_name}\n\nExtracted from: {gen.get('metadata', {}).get('source_repo', 'unknown')}\nScore: {gen.get('metadata', {}).get('score', 0)}"],
            cwd=repo_dir, capture_output=True
        )

        # Push branch
        auth_url = clone_url.replace("http://", f"http://tonyjbala:{token}@")
        push_result = subprocess.run(
            ["git", "push", "-u", auth_url, f"main:{branch_name}"],
            capture_output=True, text=True, timeout=30
        )

        if push_result.returncode != 0:
            # Try creating from current branch
            subprocess.run(["git", "checkout", "-b", branch_name], cwd=repo_dir, capture_output=True)
            push_result = subprocess.run(
                ["git", "push", "-u", auth_url, branch_name],
                capture_output=True, text=True, timeout=30
            )

        if push_result.returncode != 0:
            return {
                "status": "PUSH_ERROR",
                "error": push_result.stderr[:500],
            }

        # Create PR via API
        pr_url = f"{base_url}/api/v1/repos/{owner}/{repo_name}/pulls"
        pr_payload = {
            "title": f"Add Skill: {skill_name}",
            "body": f"## Skill: {skill_name}\n\n"
                    f"**Goal:** {gen.get('metadata', {}).get('goal', '')}\n"
                    f"**Source:** {gen.get('metadata', {}).get('source_repo', '')}\n"
                    f"**Score:** {gen.get('metadata', {}).get('score', 0)}\n"
                    f"**Confidence:** {gen.get('metadata', {}).get('confidence', 0)}\n"
                    f"**Review:** {review_result.get('reason', '')}\n\n"
                    f"### Files\n"
                    + "".join(f"- `{f}`\n" for f in files.keys()),
            "head": branch_name,
            "base": "main",
        }

        import requests
        headers = {
            "Authorization": f"token {token}",
            "Content-Type": "application/json",
        }
        resp = requests.post(pr_url, json=pr_payload, headers=headers, timeout=15)

        if resp.status_code in (200, 201):
            pr_data = resp.json()
            return {
                "status": "PUBLISHED",
                "skill_name": skill_name,
                "branch": branch_name,
                "pr_url": pr_data.get("html_url", ""),
                "pr_number": pr_data.get("index", ""),
                "message": f"PR opened: {pr_data.get('html_url', '')}",
            }
        elif resp.status_code == 409:
            # PR already exists for this branch
            return {
                "status": "PUBLISHED",
                "skill_name": skill_name,
                "branch": branch_name,
                "pr_url": f"{base_url}/{owner}/{repo_name}/pulls",
                "message": f"PR already exists for branch {branch_name}",
            }
        else:
            return {
                "status": "PR_ERROR",
                "http_code": resp.status_code,
                "error": resp.text[:500],
                "branch": branch_name,
                "message": f"Branch pushed but PR creation failed. Pushed branch: {branch_name}",
            }