"""Admin API endpoints for Flare (Refactored)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Provides authentication, project, version, and API management endpoints with provider support.
"""

import os
import time
import threading
import hashlib
import bcrypt
from typing import Optional, Dict, List, Any
from datetime import datetime, timedelta, timezone
from fastapi import APIRouter, HTTPException, Depends, Query, Response, Body
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
from pydantic import BaseModel, Field
import httpx

from utils import verify_token, create_token
from config_provider import ConfigProvider
from logger import log_info, log_error, log_warning, log_debug
from exceptions import (
    RaceConditionError, ValidationError, ResourceNotFoundError,
    AuthenticationError, AuthorizationError, DuplicateResourceError
)

# ===================== Constants & Config =====================
security = HTTPBearer()
router = APIRouter(tags=["admin"])

# ===================== Models =====================
class LoginRequest(BaseModel):
    username: str
    password: str

class LoginResponse(BaseModel):
    token: str
    username: str

class ChangePasswordRequest(BaseModel):
    current_password: str
    new_password: str

class ProviderSettingsUpdate(BaseModel):
    name: str
    api_key: Optional[str] = None
    endpoint: Optional[str] = None
    settings: Dict[str, Any] = Field(default_factory=dict)
    
class EnvironmentUpdate(BaseModel):
    llm_provider: ProviderSettingsUpdate
    tts_provider: ProviderSettingsUpdate
    stt_provider: ProviderSettingsUpdate
    parameter_collection_config: Optional[Dict[str, Any]] = None

class ProjectCreate(BaseModel):
    name: str
    caption: Optional[str] = ""
    icon: Optional[str] = "folder"  
    description: Optional[str] = ""  
    default_locale: str = "tr"
    supported_locales: List[str] = Field(default_factory=lambda: ["tr"])
    timezone: str = "Europe/Istanbul"  
    region: str = "tr-TR"
    
class ProjectUpdate(BaseModel):
    caption: str
    icon: Optional[str] = "folder"  
    description: Optional[str] = ""  
    default_locale: str = "tr"
    supported_locales: List[str] = Field(default_factory=lambda: ["tr"])
    timezone: str = "Europe/Istanbul"
    region: str = "tr-TR"
    last_update_date: str
    
class VersionCreate(BaseModel):
    caption: str
    source_version_no: int | None = None

class IntentModel(BaseModel):
    name: str
    caption: Optional[str] = ""
    detection_prompt: str
    examples: List[Dict[str, str]] = []  # LocalizedExample format
    parameters: List[Dict[str, Any]] = []
    action: str
    fallback_timeout_prompt: Optional[str] = None
    fallback_error_prompt: Optional[str] = None

class VersionUpdate(BaseModel):
    caption: str
    general_prompt: str
    llm: Dict[str, Any]
    intents: List[IntentModel]
    last_update_date: str

class APICreate(BaseModel):
    name: str
    url: str
    method: str = "POST"
    headers: Dict[str, str] = {}
    body_template: Dict[str, Any] = {}
    timeout_seconds: int = 10
    retry: Dict[str, Any] = Field(default_factory=lambda: {"retry_count": 3, "backoff_seconds": 2, "strategy": "static"})
    proxy: Optional[str] = None
    auth: Optional[Dict[str, Any]] = None
    response_prompt: Optional[str] = None
    response_mappings: List[Dict[str, Any]] = []

class APIUpdate(BaseModel):
    url: str
    method: str
    headers: Dict[str, str]
    body_template: Dict[str, Any]
    timeout_seconds: int
    retry: Dict[str, Any]
    proxy: Optional[str]
    auth: Optional[Dict[str, Any]]
    response_prompt: Optional[str]
    response_mappings: List[Dict[str, Any]] = []
    last_update_date: str
    
class TestRequest(BaseModel):
    test_type: str  # "all", "ui", "backend", "integration", "spark"

# ===================== Auth Endpoints =====================
@router.post("/login", response_model=LoginResponse)
async def login(request: LoginRequest):
    """User login endpoint"""
    cfg = ConfigProvider.get()
    
    # Find user
    user = next((u for u in cfg.global_config.users if u.username == request.username), None)
    if not user:
        raise HTTPException(status_code=401, detail="Invalid credentials")
    
    # Verify password - Try both bcrypt and SHA256 for backward compatibility
    password_valid = False
    
    # First try bcrypt (new format)
    try:
        if user.password_hash.startswith("$2b$") or user.password_hash.startswith("$2a$"):
            password_valid = bcrypt.checkpw(request.password.encode('utf-8'), user.password_hash.encode('utf-8'))
    except:
        pass
    
    # If not valid, try SHA256 (old format)
    if not password_valid:
        sha256_hash = hashlib.sha256(request.password.encode('utf-8')).hexdigest()
        password_valid = (user.password_hash == sha256_hash)
    
    if not password_valid:
        raise HTTPException(status_code=401, detail="Invalid credentials")
    
    # Create token
    token = create_token(request.username)
    
    log_info(f"✅ User '{request.username}' logged in successfully")
    return LoginResponse(token=token, username=request.username)

@router.post("/change-password")
async def change_password(
    request: ChangePasswordRequest,
    username: str = Depends(verify_token)
):
    """Change user password"""
    cfg = ConfigProvider.get()
    
    # Find user
    user = next((u for u in cfg.global_config.users if u.username == username), None)
    if not user:
        raise HTTPException(status_code=404, detail="User not found")
    
    # Verify current password
    if not bcrypt.checkpw(request.current_password.encode('utf-8'), user.password_hash.encode('utf-8')):
        raise HTTPException(status_code=401, detail="Current password is incorrect")
    
    # Generate new password hash
    salt = bcrypt.gensalt()
    new_hash = bcrypt.hashpw(request.new_password.encode('utf-8'), salt)
    
    # Update user
    user.password_hash = new_hash.decode('utf-8')
    user.salt = salt.decode('utf-8')
    
    # Save configuration
    cfg.save()
    
    log_info(f"✅ Password changed for user '{username}'")
    return {"success": True}

# ===================== Locales Endpoints =====================
@router.get("/locales")
async def get_available_locales(username: str = Depends(verify_token)):
    """Get all system-supported locales"""
    from locale_manager import LocaleManager
    
    locales = LocaleManager.get_available_locales_with_names()
    
    return {
        "locales": locales,
        "default": LocaleManager.get_default_locale()
    }

@router.get("/locales/{locale_code}")
async def get_locale_details(
    locale_code: str,
    username: str = Depends(verify_token)
):
    """Get detailed information for a specific locale"""
    from locale_manager import LocaleManager
    
    locale_info = LocaleManager.get_locale_details(locale_code)
    
    if not locale_info:
        raise HTTPException(status_code=404, detail=f"Locale '{locale_code}' not found")
    
    return locale_info
    
# ===================== Environment Endpoints =====================
@router.get("/environment")
async def get_environment(username: str = Depends(verify_token)):
    """Get environment configuration with provider info"""
    cfg = ConfigProvider.get()
    env_config = cfg.global_config
    
    # Provider tabanlı yeni yapıyı destekle
    response = {}
    
    # LLM Provider - eski yapıdan dönüştür
    if hasattr(env_config, 'llm_provider'):
        response["llm_provider"] = env_config.llm_provider.model_dump()
    else:
        # Eski yapıdan provider bilgisini oluştur
        response["llm_provider"] = {
            "name": env_config.work_mode if env_config.work_mode in ["gpt4o", "gpt4o-mini"] else "spark_cloud",
            "api_key": env_config.cloud_token or "",
            "endpoint": str(env_config.spark_endpoint),
            "settings": {
                "internal_prompt": getattr(env_config, 'internal_prompt', None)
            }
        }
    
    # TTS Provider - eski yapıdan dönüştür  
    if hasattr(env_config, 'tts_provider'):
        response["tts_provider"] = env_config.tts_provider.model_dump()
    else:
        response["tts_provider"] = {
            "name": getattr(env_config, 'tts_engine', 'no_tts'),
            "api_key": getattr(env_config, 'tts_engine_api_key', None) or "",
            "endpoint": None,
            "settings": getattr(env_config, 'tts_settings', {})
        }
    
    # STT Provider - eski yapıdan dönüştür
    if hasattr(env_config, 'stt_provider'):
        response["stt_provider"] = env_config.stt_provider.model_dump()
    else:
        response["stt_provider"] = {
            "name": getattr(env_config, 'stt_engine', 'no_stt'),
            "api_key": getattr(env_config, 'stt_engine_api_key', None) or "",
            "endpoint": None,
            "settings": getattr(env_config, 'stt_settings', {})
        }
    
    # Provider listesi
    if hasattr(env_config, 'providers'):
        response["providers"] = [p.model_dump() for p in env_config.providers]
    else:
        # Varsayılan provider listesi
        response["providers"] = [
            {
                "type": "llm",
                "name": "spark_cloud",
                "display_name": "Spark LLM (Cloud)",
                "requires_endpoint": True,
                "requires_api_key": True,
                "requires_repo_info": False
            },
            {
                "type": "llm", 
                "name": "gpt4o",
                "display_name": "GPT-4o",
                "requires_endpoint": True,
                "requires_api_key": True,
                "requires_repo_info": False
            },
            {
                "type": "llm",
                "name": "gpt4o-mini", 
                "display_name": "GPT-4o Mini",
                "requires_endpoint": True,
                "requires_api_key": True,
                "requires_repo_info": False
            },
            {
                "type": "tts",
                "name": "no_tts",
                "display_name": "No TTS",
                "requires_endpoint": False,
                "requires_api_key": False,
                "requires_repo_info": False
            },
            {
                "type": "tts",
                "name": "elevenlabs",
                "display_name": "ElevenLabs",
                "requires_endpoint": False,
                "requires_api_key": True,
                "requires_repo_info": False
            },
            {
                "type": "stt",
                "name": "no_stt",
                "display_name": "No STT", 
                "requires_endpoint": False,
                "requires_api_key": False,
                "requires_repo_info": False
            },
            {
                "type": "stt",
                "name": "google",
                "display_name": "Google Cloud STT",
                "requires_endpoint": False,
                "requires_api_key": True,
                "requires_repo_info": False
            }
        ]
    
    # Parameter collection config
    if hasattr(env_config, 'parameter_collection_config'):
        response["parameter_collection_config"] = env_config.parameter_collection_config.model_dump()
    else:
        # Varsayılan değerler
        response["parameter_collection_config"] = {
            "max_params_per_question": 2,
            "retry_unanswered": True,
            "smart_grouping": True,
            "collection_prompt": "You are a helpful assistant collecting information from the user..."
        }
    
    return response

@router.put("/environment")
async def update_environment(
    update: EnvironmentUpdate,
    username: str = Depends(verify_token)
):
    """Update environment configuration with provider validation"""
    log_info(f"📝 Updating environment config by {username}")
    
    cfg = ConfigProvider.get()
    
    # Validate LLM provider
    llm_provider_def = cfg.global_config.get_provider_config("llm", update.llm_provider.name)
    if not llm_provider_def:
        raise HTTPException(status_code=400, detail=f"Unknown LLM provider: {update.llm_provider.name}")
    
    if llm_provider_def.requires_api_key and not update.llm_provider.api_key:
        raise HTTPException(status_code=400, detail=f"{llm_provider_def.display_name} requires API key")
    
    if llm_provider_def.requires_endpoint and not update.llm_provider.endpoint:
        raise HTTPException(status_code=400, detail=f"{llm_provider_def.display_name} requires endpoint")
    
    # Validate TTS provider
    tts_provider_def = cfg.global_config.get_provider_config("tts", update.tts_provider.name)
    if not tts_provider_def:
        raise HTTPException(status_code=400, detail=f"Unknown TTS provider: {update.tts_provider.name}")
    
    if tts_provider_def.requires_api_key and not update.tts_provider.api_key:
        raise HTTPException(status_code=400, detail=f"{tts_provider_def.display_name} requires API key")
    
    # Validate STT provider
    stt_provider_def = cfg.global_config.get_provider_config("stt", update.stt_provider.name)
    if not stt_provider_def:
        raise HTTPException(status_code=400, detail=f"Unknown STT provider: {update.stt_provider.name}")
    
    if stt_provider_def.requires_api_key and not update.stt_provider.api_key:
        raise HTTPException(status_code=400, detail=f"{stt_provider_def.display_name} requires API key")
    
    # Update via ConfigProvider
    ConfigProvider.update_environment(update.model_dump(), username)
    
    log_info(f"✅ Environment updated to LLM: {update.llm_provider.name}, TTS: {update.tts_provider.name}, STT: {update.stt_provider.name} by {username}")
    return {"success": True}

# ===================== Project Endpoints =====================
@router.get("/projects/names")
def list_enabled_projects():
    """Get list of enabled project names for chat"""
    cfg = ConfigProvider.get()
    return [p.name for p in cfg.projects if p.enabled and not getattr(p, 'deleted', False)]

@router.get("/projects")
async def list_projects(
    include_deleted: bool = False,
    username: str = Depends(verify_token)
):
    """List all projects"""
    cfg = ConfigProvider.get()
    projects = cfg.projects
    
    # Filter deleted if needed
    if not include_deleted:
        projects = [p for p in projects if not getattr(p, 'deleted', False)]
    
    return [p.model_dump() for p in projects]

@router.get("/projects/{project_id}")
async def get_project(
    project_id: int,
    username: str = Depends(verify_token)
):
    """Get single project by ID"""
    project = ConfigProvider.get_project(project_id)
    if not project or getattr(project, 'deleted', False):
        raise HTTPException(status_code=404, detail="Project not found")
    
    return project.model_dump()

@router.post("/projects")
async def create_project(
    project: ProjectCreate,
    username: str = Depends(verify_token)
):
    """Create new project with initial version"""
    # Validate supported locales
    from locale_manager import LocaleManager
    
    invalid_locales = LocaleManager.validate_project_languages(project.supported_locales)
    if invalid_locales:
        available_locales = LocaleManager.get_available_locales_with_names()
        available_codes = [locale['code'] for locale in available_locales]
        raise HTTPException(
            status_code=400, 
            detail=f"Unsupported locales: {', '.join(invalid_locales)}. Available locales: {', '.join(available_codes)}"
        )
    
    # Check if default locale is in supported locales
    if project.default_locale not in project.supported_locales:
        raise HTTPException(
            status_code=400,
            detail="Default locale must be one of the supported locales"
        )
    
    try:
        # Debug log for project creation
        log_debug(f"🔍 Creating project '{project.name}' with default_locale: {project.default_locale}")
        
        new_project = ConfigProvider.create_project(project.model_dump(), username)
        
        # Debug log for initial version
        if new_project.versions:
            initial_version = new_project.versions[0]
            log_debug(f"🔍 Initial version created - no: {initial_version.no}, published: {initial_version.published}, type: {type(initial_version.published)}")
        
        log_info(f"✅ Project '{project.name}' created by {username}")
        return new_project.model_dump()
        
    except DuplicateResourceError:
        raise HTTPException(status_code=409, detail=f"Project with name '{project.name}' already exists")
    except Exception as e:
        log_error(f"❌ Error creating project", e)
        raise HTTPException(status_code=500, detail=str(e))

@router.put("/projects/{project_id}")
async def update_project(
    project_id: int,
    update: ProjectUpdate,
    username: str = Depends(verify_token)
):
    """Update existing project with race condition handling"""
    try:
        log_info(f"🔍 Update request for project {project_id} by {username}")
        log_info(f"🔍 Received last_update_date: {update.last_update_date}")
        
        # Mevcut project'i al ve durumunu logla
        current_project = ConfigProvider.get_project(project_id)
        if current_project:
            log_info(f"🔍 Current project last_update_date: {current_project.last_update_date}")
            log_info(f"🔍 Current project last_update_user: {current_project.last_update_user}")
        
        # Optimistic locking kontrolü
        result = ConfigProvider.update_project(
            project_id, 
            update.model_dump(),
            username,
            expected_last_update=update.last_update_date
        )
        
        log_info(f"✅ Project {project_id} updated by {username}")
        return result     
    except RaceConditionError as e:
        log_warning(f"⚠️ Race condition detected for project {project_id}")
        raise HTTPException(
            status_code=409,
            detail=e.to_http_detail()
        )
    except ResourceNotFoundError:
        raise HTTPException(status_code=404, detail="Project not found")
    except Exception as e:
        log_error(f"❌ Error updating project {project_id}", e)
        raise HTTPException(status_code=500, detail=str(e))

@router.delete("/projects/{project_id}")
async def delete_project(project_id: int, username: str = Depends(verify_token)):
    """Delete project (soft delete)"""
    ConfigProvider.delete_project(project_id, username)
    
    log_info(f"✅ Project deleted by {username}")
    return {"success": True}

@router.patch("/projects/{project_id}/toggle")
async def toggle_project(project_id: int, username: str = Depends(verify_token)):
    """Toggle project enabled status"""
    enabled = ConfigProvider.toggle_project(project_id, username)
    
    log_info(f"✅ Project {'enabled' if enabled else 'disabled'} by {username}")
    return {"enabled": enabled}

# ===================== Version Endpoints =====================
@router.get("/projects/{project_id}/versions")
async def list_versions(
    project_id: int,
    include_deleted: bool = False,
    username: str = Depends(verify_token)
):
    """List project versions"""
    project = ConfigProvider.get_project(project_id)
    if not project:
        raise HTTPException(status_code=404, detail="Project not found")
    
    versions = project.versions
    
    # Filter deleted if needed
    if not include_deleted:
        versions = [v for v in versions if not getattr(v, 'deleted', False)]
    
    return [v.model_dump() for v in versions]

@router.post("/projects/{project_id}/versions")
async def create_version(
    project_id: int,
    version_data: VersionCreate,
    username: str = Depends(verify_token)
):
    """Create new version"""
    new_version = ConfigProvider.create_version(project_id, version_data.model_dump(), username)
    
    log_info(f"✅ Version created for project {project_id} by {username}")
    return new_version.model_dump()

@router.put("/projects/{project_id}/versions/{version_no}")
async def update_version(
    project_id: int,
    version_no: int,
    update: VersionUpdate,
    force: bool = Query(default=False, description="Force update despite conflicts"),
    username: str = Depends(verify_token)
):
    """Update version with race condition handling"""
    try:
        log_debug(f"🔍 Version update request - project: {project_id}, version: {version_no}, user: {username}")
       
        # Force parametresi kontrolü
        if force:
            log_warning(f"⚠️ Force update requested for version {version_no} by {username}")
        
        result = ConfigProvider.update_version(
            project_id,
            version_no,
            update.model_dump(),
            username,
            expected_last_update=update.last_update_date if not force else None
        )
        
        log_info(f"✅ Version {version_no} updated by {username}")
        return result

    except ValidationError as e:
        log_error(f"❌ Validation error for version {version_no}: {str(e)}")
        raise HTTPException(status_code=400, detail=str(e))    
    except RaceConditionError as e:
        if force:
            # Force modunda race condition'ı yoksay
            result = ConfigProvider.update_version(
                project_id,
                version_no,
                update.model_dump(),
                username,
                expected_last_update=None
            )
            return result
        else:
            log_warning(f"⚠️ Race condition detected for version {version_no}")
            raise HTTPException(
                status_code=409,
                detail=e.to_http_detail()
            )
    except ResourceNotFoundError:
        raise HTTPException(status_code=404, detail="Version not found")
    except Exception as e:
        log_error(f"❌ Error updating version {version_no}", e)
        raise HTTPException(status_code=500, detail=str(e))
        
@router.post("/projects/{project_id}/versions/{version_no}/publish")
async def publish_version(
    project_id: int,
    version_no: int,
    username: str = Depends(verify_token)
):
    """Publish version"""
    project, version = ConfigProvider.publish_version(project_id, version_no, username)
    
    log_info(f"✅ Version {version_no} published for project '{project.name}' by {username}")

    # Notify LLM provider if project is enabled and provider requires repo info
    cfg = ConfigProvider.get()
    llm_provider_def = cfg.global_config.get_provider_config("llm", cfg.global_config.llm_provider.name)
    
    if project.enabled and llm_provider_def and llm_provider_def.requires_repo_info:
        try:
            await notify_llm_startup(project, version)
        except Exception as e:
            log_error(f"⚠️ Failed to notify LLM provider", e)
            # Don't fail the publish 

    return {"success": True}

@router.delete("/projects/{project_id}/versions/{version_no}")
async def delete_version(
    project_id: int,
    version_no: int,
    username: str = Depends(verify_token)
):
    """Delete version (soft delete)"""
    ConfigProvider.delete_version(project_id, version_no, username)
    
    log_info(f"✅ Version {version_no} deleted for project {project_id} by {username}")
    return {"success": True}

@router.get("/projects/{project_name}/versions")
async def get_project_versions(
    project_name: str,
    username: str = Depends(verify_token)
):
    """Get all versions of a project for testing"""
    cfg = ConfigProvider.get()
    
    # Find project
    project = next((p for p in cfg.projects if p.name == project_name), None)
    if not project:
        raise HTTPException(status_code=404, detail=f"Project '{project_name}' not found")
    
    # Return versions with their status
    versions = []
    for v in project.versions:
        if not getattr(v, 'deleted', False):
            versions.append({
                "version_number": v.no,
                "caption": v.caption,
                "published": v.published,
                "description": getattr(v, 'description', ''),
                "intent_count": len(v.intents),
                "created_date": getattr(v, 'created_date', None),
                "is_current": v.published  # Published version is current
            })
    
    return {
        "project_name": project_name,
        "project_caption": project.caption,
        "versions": versions
    }

@router.get("/projects/{project_id}/versions/{version1_id}/compare/{version2_id}")
async def compare_versions(
    project_id: int,
    version1_no: int,
    version2_no: int,
    username: str = Depends(verify_token)
):
    """Compare two versions and return differences"""
    project = ConfigProvider.get_project(project_id)
    if not project:
        raise HTTPException(status_code=404, detail="Project not found")
    
    v1 = next((v for v in project.versions if v.no == version1_no), None)
    v2 = next((v for v in project.versions if v.no == version2_no), None)
    
    if not v1 or not v2:
        raise HTTPException(status_code=404, detail="Version not found")
    
    # Deep comparison
    differences = {
        'general_prompt': {
            'changed': v1.general_prompt != v2.general_prompt,
            'v1': v1.general_prompt,
            'v2': v2.general_prompt
        },
        'intents': {
            'added': [],
            'removed': [],
            'modified': []
        }
    }
    
    # Compare intents
    v1_intents = {i.name: i for i in v1.intents}
    v2_intents = {i.name: i for i in v2.intents}
    
    # Find added/removed
    differences['intents']['added'] = list(set(v2_intents.keys()) - set(v1_intents.keys()))
    differences['intents']['removed'] = list(set(v1_intents.keys()) - set(v2_intents.keys()))
    
    # Find modified
    for intent_name in set(v1_intents.keys()) & set(v2_intents.keys()):
        i1, i2 = v1_intents[intent_name], v2_intents[intent_name]
        if i1.model_dump() != i2.model_dump():
            differences['intents']['modified'].append({
                'name': intent_name,
                'differences': compare_intent_details(i1, i2)
            })
    
    log_info(
        f"Version comparison performed",
        user=username,
        project_id=project_id,
        version1_id=version1_id,
        version2_id=version2_id
    )
    
    return differences
    
# ===================== API Endpoints =====================
@router.get("/apis")
async def list_apis(
    include_deleted: bool = False,
    username: str = Depends(verify_token)
):
    """List all APIs"""
    cfg = ConfigProvider.get()
    apis = cfg.apis
    
    # Filter deleted if needed
    if not include_deleted:
        apis = [a for a in apis if not getattr(a, 'deleted', False)]
    
    return [a.model_dump() for a in apis]

@router.post("/apis")
async def create_api(api: APICreate, username: str = Depends(verify_token)):
    """Create new API"""
    new_api = ConfigProvider.create_api(api.model_dump(), username)
    
    log_info(f"✅ API '{api.name}' created by {username}")
    return new_api.model_dump()

@router.put("/apis/{api_name}")
async def update_api(
    api_name: str,
    update: APIUpdate,
    username: str = Depends(verify_token)
):
    """Update API configuration with race condition handling"""
    try:
        result = ConfigProvider.update_api(
            api_name,
            update.model_dump(),
            username,
            expected_last_update=update.last_update_date
        )
        
        log_info(f"✅ API '{api_name}' updated by {username}")
        return result
        
    except RaceConditionError as e:
        log_warning(f"⚠️ Race condition detected for API '{api_name}'")
        raise HTTPException(
            status_code=409,
            detail=e.to_http_detail()
        )
    except ResourceNotFoundError:
        raise HTTPException(status_code=404, detail="API not found")
    except Exception as e:
        log_error(f"❌ Error updating API '{api_name}'", e)
        raise HTTPException(status_code=500, detail=str(e))

@router.delete("/apis/{api_name}")
async def delete_api(api_name: str, username: str = Depends(verify_token)):
    """Delete API (soft delete)"""
    ConfigProvider.delete_api(api_name, username)
    
    log_info(f"✅ API '{api_name}' deleted by {username}")
    return {"success": True}

@router.post("/validate/regex")
async def validate_regex(
    request: dict = Body(...),
    username: str = Depends(verify_token)
):
    """Validate regex pattern"""
    pattern = request.get("pattern", "")
    test_value = request.get("test_value", "")
    
    try:
        import re
        compiled_regex = re.compile(pattern)
        matches = bool(compiled_regex.match(test_value))
        
        return {
            "valid": True,
            "matches": matches,
            "pattern": pattern,
            "test_value": test_value
        }
    except Exception as e:
        return {
            "valid": False,
            "matches": False,
            "error": str(e),
            "pattern": pattern,
            "test_value": test_value
        }

# ===================== Test Endpoints =====================
@router.post("/test/run-all")
async def run_all_tests(
    request: TestRequest,
    username: str = Depends(verify_token)
):
    """Run all tests"""
    log_info(f"🧪 Running {request.test_type} tests requested by {username}")
    
    # TODO: Implement test runner
    # For now, return mock results
    return {
        "test_run_id": "test_" + datetime.now().isoformat(),
        "status": "running",
        "total_tests": 60,
        "completed": 0,
        "passed": 0,
        "failed": 0,
        "message": "Test run started"
    }

@router.get("/test/status/{test_run_id}")
async def get_test_status(
    test_run_id: str,
    username: str = Depends(verify_token)
):
    """Get test run status"""
    # TODO: Implement test status tracking
    return {
        "test_run_id": test_run_id,
        "status": "completed",
        "total_tests": 60,
        "completed": 60,
        "passed": 57,
        "failed": 3,
        "duration": 340.5,
        "details": []
    }

# ===================== Activity Log =====================
@router.get("/activity-log")
async def get_activity_log(
    limit: int = Query(100, ge=1, le=1000),
    entity_type: Optional[str] = None,
    username: str = Depends(verify_token)
):
    """Get activity log"""
    cfg = ConfigProvider.get()
    logs = cfg.activity_log
    
    # Filter by entity type if specified
    if entity_type:
        logs = [l for l in logs if l.entity_type == entity_type]
    
    # Return most recent entries
    return logs[-limit:]

# ===================== TTS Endpoints =====================
class TTSRequest(BaseModel):
    text: str
    voice_id: Optional[str] = None
    language: Optional[str] = "tr-TR"

@router.post("/tts/generate")
async def generate_tts(
    request: TTSRequest,
    username: str = Depends(verify_token)
):
    """Generate TTS audio from text"""
    from tts_factory import TTSFactory
    from tts_preprocessor import TTSPreprocessor
    import base64
    
    try:
        # Create TTS provider
        tts_provider = TTSFactory.create_provider()
        
        if not tts_provider:
            # Return empty response for no TTS
            return Response(
                content=b"",
                media_type="audio/mpeg",
                headers={"X-TTS-Status": "disabled"}
            )
        
        log_info(f"🎤 TTS request: '{request.text[:50]}...' with provider: {tts_provider.get_provider_name()}")
        
        # Preprocess text if needed
        preprocessor = TTSPreprocessor(language=request.language)
        processed_text = preprocessor.preprocess(
            request.text,
            tts_provider.get_preprocessing_flags()
        )
        
        # Generate audio
        audio_data = await tts_provider.synthesize(
            text=processed_text,
            voice_id=request.voice_id
        )
        
        # Return audio as binary response
        return Response(
            content=audio_data,
            media_type="audio/mpeg",
            headers={
                "Content-Disposition": 'inline; filename="tts_output.mp3"',
                "X-TTS-Provider": tts_provider.get_provider_name()
            }
        )
        
    except Exception as e:
        log_error("❌ TTS generation error", e)
        raise HTTPException(status_code=500, detail=str(e))

@router.get("/tts/voices")
async def get_tts_voices(username: str = Depends(verify_token)):
    """Get available TTS voices"""
    from tts_factory import TTSFactory
    
    try:
        tts_provider = TTSFactory.create_provider()
        
        if not tts_provider:
            return {"voices": []}
        
        voices = tts_provider.get_supported_voices()
        
        # Convert dict to list format
        voice_list = [
            {"id": voice_id, "name": voice_name}
            for voice_id, voice_name in voices.items()
        ]
        
        return {"voices": voice_list}
        
    except Exception as e:
        log_error("❌ Error getting TTS voices", e)
        return {"voices": []}

# ===================== Helper Functions =====================
async def notify_llm_startup(project, version):
    """Notify LLM provider about project startup"""
    from llm_factory import LLMFactory
    
    try:
        llm_provider = LLMFactory.create_provider()
        
        # Build project config for startup
        project_config = {
            "name": project.name,
            "version_no": version.no,
            "repo_id": version.llm.repo_id,
            "generation_config": version.llm.generation_config,
            "use_fine_tune": version.llm.use_fine_tune,
            "fine_tune_zip": version.llm.fine_tune_zip
        }
        
        success = await llm_provider.startup(project_config)
        if success:
            log_info(f"✅ LLM provider notified for project '{project.name}'")
        else:
            log_info(f"⚠️ LLM provider notification failed for project '{project.name}'")
            
    except Exception as e:
        log_error("❌ Error notifying LLM provider", e)
        raise
    
# ===================== Cleanup Task =====================
def cleanup_activity_log():
    """Cleanup old activity log entries"""
    while True:
        try:
            cfg = ConfigProvider.get()
            
            # Keep only last 30 days
            cutoff = datetime.now() - timedelta(days=30)
            cutoff_str = cutoff.isoformat()
            
            original_count = len(cfg.activity_log)
            cfg.activity_log = [
                log for log in cfg.activity_log 
                if hasattr(log, 'timestamp') and str(log.timestamp) >= cutoff_str
            ]
            
            if len(cfg.activity_log) < original_count:
                removed = original_count - len(cfg.activity_log)
                log_info(f"🧹 Cleaned up {removed} old activity log entries")
                # ConfigProvider.save(cfg, "system") kullanmalıyız
                ConfigProvider.save(cfg, "system")
                
        except Exception as e:
            log_error("❌ Activity log cleanup error", e)
        
        # Run every hour
        time.sleep(3600)

def start_cleanup_task():
    """Start the cleanup task in background"""
    thread = threading.Thread(target=cleanup_activity_log, daemon=True)
    thread.start()
    log_info("🧹 Activity log cleanup task started")