# admin_router.py
from fastapi import APIRouter, HTTPException, Depends, Request, status, UploadFile, File
from pydantic import BaseModel, Field
from typing import Optional, List
import structlog
import time
import secrets
import hashlib
from datetime import datetime
from pathlib import Path

from pack_manager import PACKS_DIR, load_packs_config, get_pack_presets, toggle_pack_disabled

from auth import get_db, require_role, log_audit, get_current_user, hash_password
from roles import (
    ROLE_PERMISSIONS, UserRole, ROLE_NAMES, has_permission, Permissions,
    ROLE_USER, ROLE_PASS_HOLDER, ROLE_MODERATOR, ROLE_ELDER, ROLE_CREATOR
)

logger = structlog.get_logger(__name__)

router = APIRouter(prefix="/admin", tags=["admin"])

# ====================== МОДЕЛИ ======================
class UpdateRoleRequest(BaseModel):
    user_id: int
    role: int = Field(..., ge=0, le=4)

class PassRequest(BaseModel):
    username: str
    reason: Optional[str] = None

class PassDecision(BaseModel):
    request_id: int
    approved: bool
    reason: Optional[str] = None

class CreatePassDirectRequest(BaseModel):
    username: str
    expires_days: Optional[int] = Field(None, ge=1, le=365)
    max_uses: int = Field(1, ge=1, le=10)

class BanUserRequest(BaseModel):
    user_id: int
    days: int = Field(..., ge=1, le=365)
    reason: str

# ====================== ЭНДПОИНТЫ ======================

@router.get("/users")
async def list_users(
    current_user: dict = Depends(require_role(ROLE_MODERATOR)),
    search: Optional[str] = None
):
    """Список пользователей (модераторы видят всех, но без sensitive данных)"""
    with get_db() as conn:
        query = "SELECT id, username, uuid, role, created_at, last_login, is_active"
        params = []
        
        if current_user["role"] < ROLE_ELDER:
            # Модераторы не видят забаненных
            query += " FROM users WHERE is_active = 1"
        else:
            query += " FROM users"
        
        if search:
            query += " AND username LIKE ?"
            params.append(f"%{search}%")
        
        query += " ORDER BY role DESC, username"
        
        rows = conn.execute(query, params).fetchall()
        
        users = []
        for row in rows:
            user_data = {
                "id": row["id"],
                "username": row["username"],
                "uuid": row["uuid"],
                "role": row["role"],
                "role_name": ROLE_NAMES.get(row["role"], "Неизвестно"),
                "created_at": row["created_at"],
                "last_login": row["last_login"],
            }
            
            # Elder и Creator видят больше информации
            if current_user["role"] >= ROLE_ELDER:
                user_data["is_active"] = row["is_active"]
                # Получаем информацию о проходке
                pass_info = conn.execute("""
                    SELECT p.code, p.expires_at, up.activated_at
                    FROM user_passes up
                    JOIN passes p ON up.pass_code = p.code
                    WHERE up.user_id = ? AND (p.expires_at IS NULL OR p.expires_at > ?)
                    LIMIT 1
                """, (row["id"], time.time())).fetchone()
                
                if pass_info:
                    user_data["has_pass"] = True
                    user_data["pass_expires"] = pass_info["expires_at"]
            
            users.append(user_data)
        
        return {"users": users, "total": len(users)}


@router.get("/users/{user_id}")
async def get_user_detail(
    user_id: int,
    current_user: dict = Depends(require_role(ROLE_MODERATOR))
):
    """Детальная информация о пользователе"""
    with get_db() as conn:
        row = conn.execute("""
            SELECT id, username, uuid, role, created_at, last_login, is_active, banned_until
            FROM users WHERE id = ?
        """, (user_id,)).fetchone()
        
        if not row:
            raise HTTPException(404, "Пользователь не найден")
        
        # Получаем активную проходку
        pass_info = None
        if row["role"] >= ROLE_PASS_HOLDER or current_user["role"] >= ROLE_ELDER:
            pass_row = conn.execute("""
                SELECT p.code, p.expires_at, up.activated_at
                FROM user_passes up
                JOIN passes p ON up.pass_code = p.code
                WHERE up.user_id = ? AND (p.expires_at IS NULL OR p.expires_at > ?)
                LIMIT 1
            """, (user_id, time.time())).fetchone()
            
            if pass_row:
                pass_info = {
                    "code": pass_row["code"][:8] + "..." if current_user["role"] < ROLE_ELDER else pass_row["code"],
                    "expires_at": pass_row["expires_at"],
                    "activated_at": pass_row["activated_at"]
                }
        
        # Логи действий (только для Elder+)
        actions = []
        if current_user["role"] >= ROLE_ELDER:
            action_rows = conn.execute("""
                SELECT action, details, timestamp FROM audit_log
                WHERE user_id = ? ORDER BY timestamp DESC LIMIT 20
            """, (user_id,)).fetchall()
            actions = [dict(row) for row in action_rows]
        
        return {
            "id": row["id"],
            "username": row["username"],
            "uuid": row["uuid"],
            "role": row["role"],
            "role_name": ROLE_NAMES.get(row["role"], "Неизвестно"),
            "created_at": row["created_at"],
            "last_login": row["last_login"],
            "is_active": row["is_active"],
            "banned_until": row["banned_until"],
            "has_pass": pass_info is not None,
            "pass_info": pass_info,
            "recent_actions": actions if current_user["role"] >= ROLE_ELDER else None
        }


@router.put("/users/{user_id}/role")
async def update_user_role(
    user_id: int,
    body: UpdateRoleRequest,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None
):
    """Изменение роли пользователя"""
    ip = request.client.host if request.client else "unknown"
    
    with get_db() as conn:
        target = conn.execute(
            "SELECT id, username, role FROM users WHERE id = ?",
            (user_id,)
        ).fetchone()
        
        if not target:
            raise HTTPException(404, "Пользователь не найден")
        
        # Проверки прав
        if target["role"] == ROLE_CREATOR and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Нельзя изменить роль создателя")
        
        if target["role"] >= current_user["role"] and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Нельзя изменять роль пользователя с равным или высшим уровнем")
        
        if body.role > current_user["role"] and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, f"Нельзя назначить роль выше своей ({ROLE_NAMES[current_user['role']]})")
        
        # Elder не может создавать других Elder (только Creator)
        if body.role == ROLE_ELDER and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Только создатель может назначать Elder Moderator")
        
        # Проверяем, нужно ли выдать/отозвать проходку
        old_role = target["role"]
        new_role = body.role
        
        conn.execute(
            "UPDATE users SET role = ? WHERE id = ?",
            (new_role, user_id)
        )
        
        # Управление проходками при изменении роли
        now = time.time()
        
        if new_role >= ROLE_PASS_HOLDER and old_role < ROLE_PASS_HOLDER:
            # Выдаем проходку если её нет
            existing = conn.execute("""
                SELECT 1 FROM user_passes up
                JOIN passes p ON up.pass_code = p.code
                WHERE up.user_id = ? AND (p.expires_at IS NULL OR p.expires_at > ?)
            """, (user_id, now)).fetchone()
            
            if not existing:
                # Создаем автоматическую проходку
                pass_code = f"AUTO_{secrets.token_hex(8).upper()}"
                conn.execute("""
                    INSERT INTO passes (code, owner, expires_at, max_uses, is_active)
                    VALUES (?, ?, NULL, 1, 1)
                """, (pass_code, target["username"]))
                
                conn.execute("""
                    INSERT INTO user_passes (user_id, pass_code, activated_at)
                    VALUES (?, ?, ?)
                """, (user_id, pass_code, now))
                
                logger.info("Auto-pass issued", user=target["username"], role=new_role)
        
        elif new_role < ROLE_PASS_HOLDER and old_role >= ROLE_PASS_HOLDER:
            # Отзываем проходку
            conn.execute("""
                UPDATE passes SET is_active = 0
                WHERE code IN (SELECT pass_code FROM user_passes WHERE user_id = ?)
            """, (user_id,))
            
            logger.info("Auto-pass revoked", user=target["username"])
        
        conn.commit()
        
        log_audit(
            current_user["id"], 
            "role_change", 
            f"Changed role of {target['username']} from {old_role} to {new_role}", 
            ip
        )
        
        logger.info("Role updated", admin=current_user["username"], target=target["username"], new_role=new_role)
        
        return {
            "success": True,
            "user_id": user_id,
            "username": target["username"],
            "old_role": old_role,
            "old_role_name": ROLE_NAMES.get(old_role, "Неизвестно"),
            "new_role": new_role,
            "new_role_name": ROLE_NAMES.get(new_role, "Неизвестно")
        }


@router.post("/pass/grant")
async def grant_pass(
    body: CreatePassDirectRequest,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None
):
    """Выдача проходки пользователю (Elder+ могут выдавать)"""
    ip = request.client.host if request.client else "unknown"
    
    # Проверяем право на прямую выдачу
    if current_user["role"] < ROLE_CREATOR and not has_permission(current_user["role"], Permissions.APPROVE_PASS):
        raise HTTPException(403, "Недостаточно прав для выдачи проходки")
    
    with get_db() as conn:
        target = conn.execute(
            "SELECT id, username, role FROM users WHERE username = ? COLLATE NOCASE",
            (body.username,)
        ).fetchone()
        
        if not target:
            raise HTTPException(404, f"Пользователь {body.username} не найден")
        
        # Проверяем, есть ли уже активная проходка
        existing = conn.execute("""
            SELECT p.code FROM user_passes up
            JOIN passes p ON up.pass_code = p.code
            WHERE up.user_id = ? AND (p.expires_at IS NULL OR p.expires_at > ?)
        """, (target["id"], time.time())).fetchone()
        
        if existing:
            raise HTTPException(409, f"У пользователя {body.username} уже есть активная проходка")
        
        # Создаем проходку
        pass_code = secrets.token_hex(12).upper()
        now = time.time()
        expires_at = now + (body.expires_days * 86400) if body.expires_days else None
        
        conn.execute("""
            INSERT INTO passes (code, owner, expires_at, max_uses, is_active)
            VALUES (?, ?, ?, ?, 1)
        """, (pass_code, target["username"], expires_at, body.max_uses))
        
        conn.execute("""
            INSERT INTO user_passes (user_id, pass_code, activated_at)
            VALUES (?, ?, ?)
        """, (target["id"], pass_code, now))
        
        # Обновляем роль если нужно
        if target["role"] < ROLE_PASS_HOLDER:
            conn.execute(
                "UPDATE users SET role = ? WHERE id = ?",
                (ROLE_PASS_HOLDER, target["id"])
            )
        
        conn.commit()
        
        log_audit(
            current_user["id"],
            "grant_pass",
            f"Granted pass to {target['username']} (expires: {body.expires_days}d, max_uses: {body.max_uses})",
            ip
        )
        
        logger.info("Pass granted", admin=current_user["username"], target=target["username"], code=pass_code)
        
        return {
            "success": True,
            "pass_code": pass_code,
            "username": target["username"],
            "expires_at": expires_at,
            "expires_days": body.expires_days,
            "max_uses": body.max_uses
        }


@router.delete("/pass/revoke/{username}")
async def revoke_pass(
    username: str,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None
):
    """Отзыв проходки у пользователя"""
    ip = request.client.host if request.client else "unknown"
    
    with get_db() as conn:
        target = conn.execute(
            "SELECT id, username, role FROM users WHERE username = ? COLLATE NOCASE",
            (username,)
        ).fetchone()
        
        if not target:
            raise HTTPException(404, f"Пользователь {username} не найден")
        
        # Отзываем проходку
        conn.execute("""
            UPDATE passes SET is_active = 0
            WHERE code IN (SELECT pass_code FROM user_passes WHERE user_id = ?)
        """, (target["id"],))
        
        # Понижаем роль если она была только из-за проходки
        if target["role"] == ROLE_PASS_HOLDER:
            conn.execute(
                "UPDATE users SET role = ? WHERE id = ?",
                (ROLE_USER, target["id"])
            )
        
        conn.commit()
        
        log_audit(current_user["id"], "revoke_pass", f"Revoked pass from {username}", ip)
        logger.info("Pass revoked", admin=current_user["username"], target=username)
        
        return {"success": True, "message": f"Проходка {username} отозвана"}


@router.post("/user/ban")
async def ban_user(
    body: BanUserRequest,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None
):
    """Бан пользователя (Elder+ могут банить)"""
    ip = request.client.host if request.client else "unknown"
    
    with get_db() as conn:
        target = conn.execute(
            "SELECT id, username, role FROM users WHERE id = ?",
            (body.user_id,)
        ).fetchone()
        
        if not target:
            raise HTTPException(404, "Пользователь не найден")
        
        # Нельзя забанить создателя
        if target["role"] == ROLE_CREATOR:
            raise HTTPException(403, "Нельзя забанить создателя")
        
        # Elder не может банить других Elder
        if target["role"] >= ROLE_ELDER and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Недостаточно прав для бана этого пользователя")
        
        banned_until = time.time() + (body.days * 86400)
        
        conn.execute(
            "UPDATE users SET is_active = 0, banned_until = ? WHERE id = ?",
            (banned_until, target["id"])
        )
        
        # Отзываем проходку при бане
        conn.execute("""
            UPDATE passes SET is_active = 0
            WHERE code IN (SELECT pass_code FROM user_passes WHERE user_id = ?)
        """, (target["id"],))
        
        conn.commit()
        
        log_audit(
            current_user["id"],
            "ban_user",
            f"Banned {target['username']} for {body.days} days. Reason: {body.reason}",
            ip
        )
        
        logger.info("User banned", admin=current_user["username"], target=target["username"], days=body.days)
        
        return {
            "success": True,
            "username": target["username"],
            "banned_until": banned_until,
            "days": body.days
        }


@router.post("/user/unban/{user_id}")
async def unban_user(
    user_id: int,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None
):
    """Разбан пользователя"""
    ip = request.client.host if request.client else "unknown"
    
    with get_db() as conn:
        target = conn.execute(
            "SELECT id, username FROM users WHERE id = ?",
            (user_id,)
        ).fetchone()
        
        if not target:
            raise HTTPException(404, "Пользователь не найден")
        
        conn.execute(
            "UPDATE users SET is_active = 1, banned_until = NULL WHERE id = ?",
            (user_id,)
        )
        
        conn.commit()
        
        log_audit(current_user["id"], "unban_user", f"Unbanned {target['username']}", ip)
        logger.info("User unbanned", admin=current_user["username"], target=target["username"])
        
        return {"success": True, "username": target["username"]}


@router.get("/audit")
async def get_audit_log(
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    limit: int = 50,
    offset: int = 0,
    user_id: Optional[int] = None
):
    """Просмотр логов аудита (только Elder+)"""
    with get_db() as conn:
        query = """
            SELECT al.*, u.username
            FROM audit_log al
            LEFT JOIN users u ON al.user_id = u.id
        """
        params = []
        
        if user_id:
            query += " WHERE al.user_id = ?"
            params.append(user_id)
        
        query += " ORDER BY al.timestamp DESC LIMIT ? OFFSET ?"
        params.extend([limit, offset])
        
        rows = conn.execute(query, params).fetchall()
        
        total = conn.execute("SELECT COUNT(*) as count FROM audit_log").fetchone()["count"]
        
        return {
            "logs": [dict(row) for row in rows],
            "total": total,
            "limit": limit,
            "offset": offset
        }


@router.get("/stats")
async def get_admin_stats(
    current_user: dict = Depends(require_role(ROLE_MODERATOR))
):
    """Статистика для админов"""
    with get_db() as conn:
        # Общая статистика
        total_users = conn.execute("SELECT COUNT(*) as count FROM users").fetchone()["count"]
        
        # Статистика по ролям
        role_stats = conn.execute("""
            SELECT role, COUNT(*) as count 
            FROM users 
            GROUP BY role 
            ORDER BY role DESC
        """).fetchall()
        
        # Активные проходки
        active_passes = conn.execute("""
            SELECT COUNT(*) as count FROM user_passes up
            JOIN passes p ON up.pass_code = p.code
            WHERE p.expires_at IS NULL OR p.expires_at > ?
        """, (time.time(),)).fetchone()["count"]
        
        # Забаненные пользователи
        banned_users = conn.execute("""
            SELECT COUNT(*) as count FROM users 
            WHERE is_active = 0 AND banned_until > ?
        """, (time.time(),)).fetchone()["count"]
        
        # Недавние регистрации (последние 7 дней)
        week_ago = time.time() - (7 * 86400)
        recent_registrations = conn.execute("""
            SELECT COUNT(*) as count FROM users WHERE created_at > ?
        """, (week_ago,)).fetchone()["count"]
        
        return {
            "total_users": total_users,
            "active_passes": active_passes,
            "banned_users": banned_users,
            "recent_registrations_7d": recent_registrations,
            "roles_distribution": [
                {"role": r["role"], "role_name": ROLE_NAMES.get(r["role"], "Неизвестно"), "count": r["count"]}
                for r in role_stats
            ],
            "my_info": {
                "role": current_user["role"],
                "role_name": ROLE_NAMES.get(current_user["role"], "Неизвестно"),
                "username": current_user["username"]
            }
        }


# ====================== WHITELIST MODS ======================

WHITELIST_DIR = Path(__file__).parent / "whitelist"
WHITELIST_MODS_FILE = WHITELIST_DIR / "mods.txt"


def _read_mods_list() -> list[dict]:
    """Parse mods.txt into list of {name, size, hash}"""
    if not WHITELIST_MODS_FILE.exists():
        return []
    mods = []
    for line in WHITELIST_MODS_FILE.read_text("utf-8").strip().split("\n"):
        line = line.strip()
        if not line:
            continue
        parts = line.split("::")
        if len(parts) >= 3:
            mods.append({
                "name": parts[0].strip(),
                "size": int(parts[1].strip()),
                "hash": parts[2].strip()
            })
    return mods


def _write_mods_list(mods: list[dict]):
    """Write mods list to mods.txt"""
    lines = [f"{m['name']} :: {m['size']} :: {m['hash']}" for m in mods]
    WHITELIST_DIR.mkdir(parents=True, exist_ok=True)
    WHITELIST_MODS_FILE.write_text("\n".join(lines) + "\n", encoding="utf-8")


@router.get("/whitelist/mods")
async def admin_list_whitelist_mods(current_user: dict = Depends(require_role(ROLE_ELDER))):
    """List all whitelist mods (JSON)"""
    return {"mods": _read_mods_list()}


@router.post("/whitelist/mods")
async def add_whitelist_mod(
    file: UploadFile = File(...),
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None,
):
    """Upload a mod file — auto-computes hash, records size, adds to whitelist"""
    if not file.filename or not file.filename.endswith(".jar"):
        raise HTTPException(400, "Only .jar files are allowed")

    contents = await file.read()
    if len(contents) == 0:
        raise HTTPException(400, "Empty file")

    file_hash = hashlib.sha256(contents).hexdigest()
    file_size = len(contents)

    WHITELIST_DIR.mkdir(parents=True, exist_ok=True)

    mod_path = WHITELIST_DIR / file_hash
    if mod_path.exists():
        raise HTTPException(409, f"Mod with hash {file_hash} already exists")

    mod_path.write_bytes(contents)

    mods = _read_mods_list()
    mods.append({"name": file.filename, "size": file_size, "hash": file_hash})
    _write_mods_list(mods)

    ip = request.client.host if request.client else "unknown"
    log_audit(current_user["id"], "whitelist_add", f"Added {file.filename} ({file_hash})", ip)

    return {"success": True, "name": file.filename, "size": file_size, "hash": file_hash}


@router.delete("/whitelist/mods/{mod_hash}")
async def remove_whitelist_mod(
    mod_hash: str,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None,
):
    """Remove a mod from whitelist by hash"""
    if ".." in mod_hash:
        raise HTTPException(400, "Invalid hash")

    mod_path = WHITELIST_DIR / mod_hash
    deleted_file = False
    if mod_path.exists() and mod_path.is_file():
        mod_path.unlink()
        deleted_file = True

    mods = _read_mods_list()
    filtered = [m for m in mods if m["hash"] != mod_hash]
    if len(filtered) == len(mods) and not deleted_file:
        raise HTTPException(404, "Mod not found")

    _write_mods_list(filtered)

    ip = request.client.host if request.client else "unknown"
    log_audit(current_user["id"], "whitelist_remove", f"Removed mod with hash {mod_hash}", ip)

    return {"success": True, "hash": mod_hash, "file_deleted": deleted_file}


# ====================== ADMIN CLIENTS, USERS, PASSES ======================

@router.get("/clients")
async def admin_list_clients(current_user: dict = Depends(require_role(ROLE_MODERATOR))):
    """List online clients"""
    with get_db() as conn:
        rows = conn.execute("""
            SELECT u.id, u.username, us.is_online, us.current_pack, us.last_seen, s.ip_address
            FROM users u
            LEFT JOIN user_status us ON u.id = us.user_id
            LEFT JOIN user_sessions s ON u.id = s.user_id AND s.is_active = 1
            WHERE us.is_online = 1
            GROUP BY u.id
            ORDER BY us.last_seen DESC
        """).fetchall()
        clients = []
        for row in rows:
            clients.append({
                "id": row["id"],
                "username": row["username"],
                "online": bool(row["is_online"]),
                "current_pack": row["current_pack"] or "",
                "last_seen": str(row["last_seen"]) if row["last_seen"] else None,
                "ip": row["ip_address"] or ""
            })
        return {"success": True, "clients": clients}


class UserSearchRequest(BaseModel):
    search: str


@router.post("/users/search")
async def admin_search_users(
    req: UserSearchRequest,
    current_user: dict = Depends(require_role(ROLE_MODERATOR)),
):
    """Search users by username"""
    if not req.search.strip():
        return {"users": []}
    with get_db() as conn:
        rows = conn.execute("""
            SELECT id, username, uuid, role, created_at, last_login, is_active
            FROM users WHERE username LIKE ?
            ORDER BY username LIMIT 20
        """, (f"%{req.search.strip()}%",)).fetchall()
        users = []
        for row in rows:
            users.append({
                "id": row["id"],
                "username": row["username"],
                "uuid": row["uuid"],
                "role": row["role"],
                "role_name": ROLE_NAMES.get(row["role"], "Unknown"),
                "created_at": row["created_at"],
                "last_login": row["last_login"],
                "is_active": bool(row["is_active"])
            })
        return {"success": True, "users": users}


class RoleUpdateRequest(BaseModel):
    user_id: int
    role: int = Field(..., ge=0, le=4)
    username: Optional[str] = None


@router.post("/users/role")
async def admin_update_user_role(
    body: RoleUpdateRequest,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None,
):
    """Update user role"""
    ip = request.client.host if request.client else "unknown"
    with get_db() as conn:
        target = conn.execute(
            "SELECT id, username, role FROM users WHERE id = ?",
            (body.user_id,)
        ).fetchone()
        if not target:
            raise HTTPException(404, "User not found")
        if target["role"] == ROLE_CREATOR and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Cannot change creator role")
        if target["role"] >= current_user["role"] and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Cannot modify equal or higher role")
        if body.role > current_user["role"] and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Cannot assign role above your own")
        if body.role == ROLE_ELDER and current_user["role"] != ROLE_CREATOR:
            raise HTTPException(403, "Only creator can assign Elder")

        old_role = target["role"]
        conn.execute("UPDATE users SET role = ? WHERE id = ?", (body.role, body.user_id))
        conn.commit()

        log_audit(current_user["id"], "role_change",
            f"Changed role of {target['username']} from {old_role} to {body.role}", ip)

        return {"success": True, "user_id": body.user_id, "username": target["username"],
                "old_role": old_role, "new_role": body.role}


class ResetPasswordRequest(BaseModel):
    user_id: int
    username: Optional[str] = None


@router.post("/users/reset-password")
async def admin_reset_password(
    body: ResetPasswordRequest,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None,
):
    """Reset user password"""
    ip = request.client.host if request.client else "unknown"
    new_password = secrets.token_hex(8)
    pw_hash = hash_password(new_password)
    with get_db() as conn:
        target = conn.execute(
            "SELECT id, username FROM users WHERE id = ?",
            (body.user_id,)
        ).fetchone()
        if not target:
            raise HTTPException(404, "User not found")
        conn.execute("UPDATE users SET password_hash = ? WHERE id = ?",
                     (pw_hash, body.user_id))
        conn.commit()
        log_audit(current_user["id"], "password_reset",
                  f"Reset password for {target['username']}", ip)
        return {"success": True, "new_password": new_password, "username": target["username"]}


@router.get("/passes")
async def admin_list_passes(current_user: dict = Depends(require_role(ROLE_MODERATOR))):
    """List all passes"""
    with get_db() as conn:
        rows = conn.execute("""
            SELECT p.code, p.is_active, p.owner, p.activated_by, p.activated_at,
                   p.expires_at, p.max_uses, p.uses, u.username as activated_username
            FROM passes p
            LEFT JOIN users u ON p.activated_by = u.id
            ORDER BY p.activated_at DESC
        """).fetchall()
        passes = []
        for row in rows:
            passes.append({
                "code": row["code"],
                "owner": row["owner"],
                "is_active": bool(row["is_active"]),
                "activated_by": row["activated_by"],
                "activated_username": row["activated_username"],
                "activated_at": row["activated_at"],
                "expires_at": row["expires_at"],
                "max_uses": row["max_uses"],
                "uses": row["uses"]
            })
        return {"success": True, "passes": passes}


@router.post("/whitelist/mods/{mod_hash}/delete")
async def admin_delete_whitelist_mod_adapter(
    mod_hash: str,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None,
):
    """Delete whitelist mod (adapter for POST-based deletion)"""
    return await remove_whitelist_mod(mod_hash, current_user, request)


# ====================== ADMIN NEWS ======================

ADMIN_NEWS_DIR = Path(__file__).parent / "news"


class CreateNewsRequest(BaseModel):
    title: str
    type: str = "Update"
    version: str = ""
    body: str


class DeleteNewsRequest(BaseModel):
    index: int


@router.post("/news")
async def admin_create_news(
    body: CreateNewsRequest,
    current_user: dict = Depends(require_role(ROLE_MODERATOR)),
    request: Request = None,
):
    """Create a news item"""
    if not body.title.strip() or not body.body.strip():
        raise HTTPException(400, "Title and body are required")
    ADMIN_NEWS_DIR.mkdir(parents=True, exist_ok=True)
    news_id = str(int(time.time()))
    file_path = ADMIN_NEWS_DIR / f"{news_id}.txt"
    content = f"{body.title.strip()}\n{body.type.strip()}\n{body.version.strip()}\n{body.body.strip()}"
    file_path.write_text(content, encoding="utf-8")
    ip = request.client.host if request.client else "unknown"
    log_audit(current_user["id"], "news_create", f"Created news: {body.title}", ip)
    return {"success": True, "id": news_id}


@router.post("/news/delete")
async def admin_delete_news(
    body: DeleteNewsRequest,
    current_user: dict = Depends(require_role(ROLE_MODERATOR)),
    request: Request = None,
):
    """Delete a news item by displayed index (0 = newest)"""
    if not ADMIN_NEWS_DIR.exists():
        raise HTTPException(404, "No news to delete")
    files = sorted(ADMIN_NEWS_DIR.iterdir())
    news_files = [f for f in files if f.is_file() and f.suffix == ".txt"]
    if body.index < 0 or body.index >= len(news_files):
        raise HTTPException(404, "News not found")
    # Displayed list is reversed (newest first), so map index
    target = news_files[len(news_files) - 1 - body.index]
    target.unlink()
    ip = request.client.host if request.client else "unknown"
    log_audit(current_user["id"], "news_delete", f"Deleted news: {target.stem}", ip)
    return {"success": True, "id": target.stem}


# ====================== PACK MANAGEMENT (ELDER+) ======================

@router.get("/packs")
async def admin_list_packs(
    current_user: dict = Depends(require_role(ROLE_ELDER)),
):
    """List all packs with disabled status"""
    packs = []
    packs_config = load_packs_config()
    
    packs_dir = Path("packs")
    if packs_dir.exists():
        for pack_dir in packs_dir.iterdir():
            if pack_dir.is_dir():
                entry = packs_config.get(pack_dir.name, {})
                packs.append({
                    "name": pack_dir.name,
                    "disabled": entry.get("disabled", False),
                    "presets": get_pack_presets(pack_dir.name)
                })
    
    return {"packs": packs}


@router.post("/packs/{pack_name}/toggle")
async def admin_toggle_pack(
    pack_name: str,
    current_user: dict = Depends(require_role(ROLE_ELDER)),
    request: Request = None,
):
    """Toggle pack disabled/enabled status"""
    pack_path = PACKS_DIR / pack_name
    if not pack_path.exists() or not pack_path.is_dir():
        raise HTTPException(404, "Pack not found")
    
    new_state = toggle_pack_disabled(pack_name)
    
    ip = request.client.host if request.client else "unknown"
    log_audit(
        current_user["id"],
        "pack_toggle",
        f"{'Disabled' if new_state else 'Enabled'} pack {pack_name}",
        ip
    )
    
    return {
        "success": True,
        "pack_name": pack_name,
        "disabled": new_state
    }


@router.get("/me")
async def get_my_info(current_user: dict = Depends(get_current_user)):
    """Информация о текущем пользователе с правами"""
    with get_db() as conn:
        row = conn.execute("""
            SELECT id, username, uuid, role, created_at, last_login
            FROM users WHERE id = ?
        """, (current_user["id"],)).fetchone()
        
        # Проверяем наличие активной проходки
        has_pass = False
        if row["role"] >= ROLE_PASS_HOLDER:
            pass_row = conn.execute("""
                SELECT 1 FROM user_passes up
                JOIN passes p ON up.pass_code = p.code
                WHERE up.user_id = ? AND (p.expires_at IS NULL OR p.expires_at > ?)
            """, (current_user["id"], time.time())).fetchone()
            has_pass = pass_row is not None
        
        permissions = list(ROLE_PERMISSIONS.get(row["role"], set()))
        
        return {
            "id": row["id"],
            "username": row["username"],
            "uuid": row["uuid"],
            "role": row["role"],
            "role_name": ROLE_NAMES.get(row["role"], "Неизвестно"),
            "created_at": row["created_at"],
            "last_login": row["last_login"],
            "has_pass": has_pass,
            "permissions": permissions
        }