import sqlite3
from typing import List, Dict, Any

DB_NAME = "/home/puh/scud_orion_ai_v2/data/scud_orion_ai.db"

def db_get_active_system_prompt() -> str:
    try:
        conn = sqlite3.connect(DB_NAME)
        cursor = conn.cursor()
        cursor.execute("SELECT prompt_text FROM system_prompts WHERE name = 'main_agent' AND is_active = 1 LIMIT 1")
        row = cursor.fetchone()
        conn.close()
        if row and row[0]:
            return row[0].replace("**", "")
    except Exception as e:
        print(f"Ошибка чтения системного промпта из БД: {e}")

    return "Ты — интеллектуальный ИИ-ассистент и архитектурный координатор проекта SCUD Orion AI."

def db_add_system_prompt(name: str = "main_agent", prompt_text: str = "") -> dict:
    clean_text = prompt_text.replace("**", "")
    conn = sqlite3.connect(DB_NAME)
    cursor = conn.cursor()
    cursor.execute("""
        INSERT INTO system_prompts (name, prompt_text, is_active)
        VALUES (?, ?, 1)
        ON CONFLICT(name) DO UPDATE SET prompt_text=excluded.prompt_text, updated_at=CURRENT_TIMESTAMP
    """, (name, clean_text))
    conn.commit()
    conn.close()
    return {"status": "success", "message": f"Системный промпт '{name}' успешно обновлен в базе!"}

def db_get_tasks(status: str = None) -> list:
    conn = sqlite3.connect(DB_NAME)
    conn.row_factory = sqlite3.Row
    cursor = conn.cursor()
    if status:
        cursor.execute("SELECT * FROM tasks WHERE status = ? ORDER BY task_id ASC", (status.upper(),))
    else:
        cursor.execute("SELECT * FROM tasks ORDER BY task_id ASC")
    rows = [dict(r) for r in cursor.fetchall()]
    conn.close()
    return rows

def db_update_task_status(task_id: str, status: str = None, due_date: str = None) -> dict:
    conn = sqlite3.connect(DB_NAME)
    cursor = conn.cursor()
    updates = []
    params = []

    if status:
        status_upper = status.upper()
        updates.append("status = ?")
        params.append(status_upper)
        if status_upper == "COMPLETED":
            updates.append("completed_at = CURRENT_TIMESTAMP")
        else:
            updates.append("completed_at = NULL")

    if due_date:
        updates.append("due_date = ?")
        params.append(due_date)

    if not updates:
        conn.close()
        return {"error": "Не указаны параметры для обновления"}

    params.append(task_id.upper())
    query = f"UPDATE tasks SET {', '.join(updates)} WHERE task_id = ?"
    cursor.execute(query, tuple(params))

    if cursor.rowcount == 0:
        conn.close()
        return {"error": f"Задача {task_id} не найдена"}

    conn.commit()
    conn.close()
    return {"status": "success", "message": f"Задача {task_id} обновлена"}

def db_delete_task(task_id: str) -> dict:
    conn = sqlite3.connect(DB_NAME)
    cursor = conn.cursor()
    cursor.execute("DELETE FROM tasks WHERE task_id = ?", (task_id.upper(),))
    deleted_count = cursor.rowcount
    conn.commit()
    conn.close()

    if deleted_count == 0:
        return {"error": f"Задача {task_id} не найдена"}
    return {"status": "success", "message": f"Задача {task_id} удалена"}

def db_add_task(module: str = "general", title: str = "", priority: str = "MEDIUM", due_date: str = None, task_id: str = None) -> dict:
    conn = sqlite3.connect(DB_NAME)
    cursor = conn.cursor()
    
    if not task_id:
        cursor.execute("SELECT task_id FROM tasks WHERE task_id LIKE 'TASK-%'")
        rows = cursor.fetchall()
        max_num = 0
        for r in rows:
            try:
                num = int(r[0].replace("TASK-", ""))
                if num > max_num:
                    max_num = num
            except ValueError:
                pass
        task_id = f"TASK-{max_num + 1:02d}"

    try:
        cursor.execute(
            "INSERT INTO tasks (task_id, module, title, status, priority, due_date) VALUES (?, ?, ?, 'BACKLOG', ?, ?)",
            (task_id.upper(), module, title, priority.upper(), due_date)
        )
        conn.commit()
        res = {"status": "success", "message": f"Задача {task_id} создана", "task_id": task_id}
    except sqlite3.IntegrityError:
        res = {"error": f"Задача с ID {task_id} уже существует"}
    finally:
        conn.close()
    return res

def db_get_rules() -> list:
    conn = sqlite3.connect(DB_NAME)
    conn.row_factory = sqlite3.Row
    cursor = conn.cursor()
    cursor.execute("SELECT id, rule_text, added_by FROM ai_knowledge_base ORDER BY id")
    rows = [dict(r) for r in cursor.fetchall()]
    conn.close()
    return rows