import json
import sqlite3
from pathlib import Path

DB_PATH = Path(__file__).resolve().parent / "media_crawler.db"


def get_conn():
    conn = sqlite3.connect(DB_PATH)
    conn.row_factory = sqlite3.Row
    return conn


def init_db():
    conn = get_conn()
    cur = conn.cursor()
    cur.execute(
        """
        CREATE TABLE IF NOT EXISTS tasks (
            task_id TEXT PRIMARY KEY,
            trace_id TEXT NOT NULL,
            status TEXT NOT NULL,
            input_payload TEXT NOT NULL,
            started_at TEXT NOT NULL,
            finished_at TEXT,
            summary TEXT
        )
        """
    )
    cur.execute(
        """
        CREATE TABLE IF NOT EXISTS media_items (
            tmdb_id TEXT PRIMARY KEY,
            type TEXT NOT NULL,
            title TEXT,
            year TEXT,
            tmdb_raw TEXT,
            hdhive_raw TEXT,
            cms_id TEXT,
            ingest_status TEXT NOT NULL
        )
        """
    )
    cur.execute(
        """
        CREATE TABLE IF NOT EXISTS task_logs (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            task_id TEXT NOT NULL,
            step TEXT NOT NULL,
            level TEXT NOT NULL,
            message TEXT NOT NULL,
            detail TEXT,
            created_at TEXT NOT NULL
        )
        """
    )
    conn.commit()
    conn.close()


def upsert_task(task):
    conn = get_conn()
    conn.execute(
        """
        INSERT INTO tasks(task_id, trace_id, status, input_payload, started_at, finished_at, summary)
        VALUES (?, ?, ?, ?, ?, ?, ?)
        ON CONFLICT(task_id) DO UPDATE SET
            status=excluded.status,
            finished_at=excluded.finished_at,
            summary=excluded.summary
        """,
        (
            task["taskId"],
            task["traceId"],
            task["status"],
            json.dumps(task["inputPayload"], ensure_ascii=False),
            task["startedAt"],
            task.get("finishedAt"),
            json.dumps(task.get("summary"), ensure_ascii=False),
        ),
    )
    conn.commit()
    conn.close()


def insert_log(task_id, step, level, message, detail, created_at):
    conn = get_conn()
    conn.execute(
        """
        INSERT INTO task_logs(task_id, step, level, message, detail, created_at)
        VALUES (?, ?, ?, ?, ?, ?)
        """,
        (
            task_id,
            step,
            level,
            message,
            json.dumps(detail, ensure_ascii=False),
            created_at,
        ),
    )
    conn.commit()
    conn.close()


def upsert_media_item(item):
    conn = get_conn()
    conn.execute(
        """
        INSERT INTO media_items(tmdb_id, type, title, year, tmdb_raw, hdhive_raw, cms_id, ingest_status)
        VALUES (?, ?, ?, ?, ?, ?, ?, ?)
        ON CONFLICT(tmdb_id) DO UPDATE SET
            type=excluded.type,
            title=excluded.title,
            year=excluded.year,
            tmdb_raw=excluded.tmdb_raw,
            hdhive_raw=excluded.hdhive_raw,
            cms_id=excluded.cms_id,
            ingest_status=excluded.ingest_status
        """,
        (
            str(item["tmdbId"]),
            item["type"],
            item.get("title"),
            item.get("year"),
            json.dumps(item.get("tmdbRaw"), ensure_ascii=False),
            json.dumps(item.get("hdhiveRaw"), ensure_ascii=False),
            item.get("cmsId"),
            item["ingestStatus"],
        ),
    )
    conn.commit()
    conn.close()


def find_media_item(tmdb_id):
    conn = get_conn()
    row = conn.execute(
        "SELECT * FROM media_items WHERE tmdb_id = ?",
        (str(tmdb_id),),
    ).fetchone()
    conn.close()
    if not row:
        return None
    return dict(row)


def list_tasks(limit=50):
    conn = get_conn()
    rows = conn.execute(
        "SELECT * FROM tasks ORDER BY started_at DESC LIMIT ?",
        (limit,),
    ).fetchall()
    conn.close()
    result = []
    for row in rows:
        item = dict(row)
        item["inputPayload"] = json.loads(item.pop("input_payload") or "{}")
        item["startedAt"] = item.pop("started_at")
        item["finishedAt"] = item.pop("finished_at")
        item["taskId"] = item.pop("task_id")
        item["traceId"] = item.pop("trace_id")
        item["summary"] = json.loads(item["summary"]) if item.get("summary") else None
        result.append(item)
    return result


def list_logs(task_id):
    conn = get_conn()
    rows = conn.execute(
        "SELECT task_id, step, level, message, detail, created_at FROM task_logs WHERE task_id = ? ORDER BY id ASC",
        (task_id,),
    ).fetchall()
    conn.close()
    logs = []
    for row in rows:
        item = dict(row)
        item["taskId"] = item.pop("task_id")
        item["createdAt"] = item.pop("created_at")
        item["detail"] = json.loads(item["detail"]) if item.get("detail") else {}
        logs.append(item)
    return logs