import json
import os
import requests
import sys

# Configuration from Environment
TOKEN = os.getenv("MASTER_TOKEN")
URL = os.getenv("GITEA_URL")
REPO = os.getenv("REPO_NAME")
HEADERS = {"Authorization": f"token {TOKEN}", "Content-Type": "application/json"}


def sync():
    beads_path = ".beads/issues.jsonl"

    if not os.path.exists(beads_path):
        print(f"❌ ERROR: {beads_path} not found.")
        sys.exit(1)

    print(f"🔍 Reading Beads from: {beads_path}")

    # 1. Fetch existing issues from Gitea
    try:
        api_url = f"{URL}/api/v1/repos/{REPO}/issues?state=all"
        resp = requests.get(api_url, headers=HEADERS)
        resp.raise_for_status()
        # Map by [ID] to identify existing ones
        existing = {
            i["title"].split("]")[0][1:]: i for i in resp.json() if "]" in i["title"]
        }
        print(f"📡 Found {len(existing)} existing issues in Gitea.")
    except Exception as e:
        print(f"❌ Gitea API Connection Failed: {e}")
        sys.exit(1)

    # 2. Parse the Beads JSONL file
    processed_count = 0
    skipped_count = 0
    deleted_count = 0

    with open(beads_path, "r") as f:
        for line in f:
            line = line.strip()
            if not line:
                continue

            try:
                data = json.loads(line)
                bid = data.get("id")
                status = data.get("status")
                title = data.get("title")
                itype = data.get("issue_type", "unknown")

                if not bid:
                    print("⚠️ Skipping line: No ID found.")
                    continue

                # --- DELETION / TOMBSTONE LOGIC ---
                if status == "tombstone":
                    if bid in existing:
                        issue_num = existing[bid]["number"]
                        print(
                            f"🗑️ Deleting Gitea Issue #{issue_num} (Tombstone found for {bid})"
                        )
                        del_resp = requests.delete(
                            f"{URL}/api/v1/repos/{REPO}/issues/{issue_num}",
                            headers=HEADERS,
                        )
                        if del_resp.status_code == 204:
                            print(f"✅ Successfully deleted {bid}")
                            deleted_count += 1
                        else:
                            print(f"⚠️ Could not delete {bid}: {del_resp.status_code}")
                    else:
                        print(f"👻 Skipping tombstone: {bid} (Already gone from Gitea)")
                        skipped_count += 1
                    continue

                # --- STANDARD SYNC LOGIC ---
                processed_count += 1
                gitea_state = (
                    "closed" if status in ["closed", "done", "finished"] else "open"
                )

                payload = {
                    "title": f"[{bid}] {title}",
                    "body": f"{data.get('description', 'No description provided.')}\n\n---\n**Beads ID:** `{bid}`\n**Type:** `{itype}`",
                    "state": gitea_state,
                }

                if bid in existing:
                    print(f"✅ Updating {bid} (Issue #{existing[bid]['number']})")
                    requests.patch(
                        f"{URL}/api/v1/repos/{REPO}/issues/{existing[bid]['number']}",
                        headers=HEADERS,
                        json=payload,
                    )
                else:
                    print(f"➕ Creating New Gitea Issue for {bid}")
                    r = requests.post(
                        f"{URL}/api/v1/repos/{REPO}/issues",
                        headers=HEADERS,
                        json=payload,
                    )
                    r.raise_for_status()

            except Exception as e:
                print(f"⚠️ Error processing bead line: {e}")

    print(
        f"🏁 Finished. Active: {processed_count}, Deleted: {deleted_count}, Skipped: {skipped_count}"
    )

    # Safety check to ensure we didn't process a completely empty file
    if (processed_count + deleted_count + skipped_count) == 0:
        print("❌ ERROR: File was found but it was EMPTY.")
        sys.exit(1)


if __name__ == "__main__":
    sync()