"""
Configuration Models for Flare Platform
"""
from pydantic import BaseModel, Field, field_serializer
from datetime import datetime
from typing import Optional, List, Dict, Any

class BaseModelWithDatetime(BaseModel):
    """Base model with consistent datetime serialization"""
    
    class Config:
        # Datetime'ları her zaman ISO 8601 formatında serialize et
        json_encoders = {
            datetime: lambda v: v.isoformat() if v else None
        }
        
# ===================== User & Auth =====================
class UserConfig(BaseModelWithDatetime):
    username: str
    password_hash: str
    salt: Optional[str] = None


# ===================== Provider Models =====================
class ProviderDefinition(BaseModelWithDatetime):
    type: str  # llm, tts, stt
    name: str
    display_name: str
    requires_endpoint: bool
    requires_api_key: bool
    requires_repo_info: Optional[bool] = False
    description: str


class ProviderSettings(BaseModelWithDatetime):
    name: str
    api_key: Optional[str] = None
    endpoint: Optional[str] = None
    settings: Optional[Dict[str, Any]] = Field(default_factory=dict)


# ===================== Global Config =====================
class GlobalConfig(BaseModelWithDatetime):
    llm_provider: ProviderSettings = Field(
        default_factory=lambda: ProviderSettings(
            name="spark_cloud",
            api_key="",
            endpoint="http://localhost:8080",
            settings={}
        )
    )
    tts_provider: ProviderSettings = Field(
        default_factory=lambda: ProviderSettings(
            name="no_tts",
            api_key="",
            endpoint=None,
            settings={}
        )
    )
    stt_provider: ProviderSettings = Field(
        default_factory=lambda: ProviderSettings(
            name="no_stt",
            api_key="",
            endpoint=None,
            settings={}
        )
    )
    providers: List[ProviderDefinition] = Field(default_factory=list)
    users: List[UserConfig] = Field(default_factory=list)
    last_update_date: Optional[str] = None
    last_update_user: Optional[str] = None
    
    def is_cloud_mode(self) -> bool:
        """Check if running in cloud mode"""
        import os
        return bool(os.environ.get("SPACE_ID"))
    
    def get_provider_config(self, provider_type: str, provider_name: str) -> Optional[ProviderDefinition]:
        """Get provider definition by type and name"""
        return next(
            (p for p in self.providers if p.type == provider_type and p.name == provider_name),
            None
        )


# ===================== Localization Models =====================
class LocalizedExample(BaseModelWithDatetime):
    locale_code: str
    example: str


class LocalizedCaption(BaseModelWithDatetime):
    locale_code: str
    caption: str


# ===================== Parameter Models =====================
class ParameterConfig(BaseModelWithDatetime):
    name: str
    caption: List[LocalizedCaption]
    type: str  # str, int, float, bool, date
    required: bool = True
    variable_name: str
    extraction_prompt: Optional[str] = None
    validation_regex: Optional[str] = None
    invalid_prompt: Optional[str] = None
    type_error_prompt: Optional[str] = None
    
    def canonical_type(self) -> str:
        """Get canonical type name"""
        return self.type.lower()
    
    def get_caption_for_locale(self, locale: str) -> str:
        """Get caption for specific locale"""
        for cap in self.caption:
            if cap.locale_code == locale:
                return cap.caption
        # Fallback to first caption
        return self.caption[0].caption if self.caption else self.name


# ===================== Intent Models =====================
class IntentConfig(BaseModelWithDatetime):
    name: str
    caption: str
    requiresApproval: Optional[bool] = False
    dependencies: List[str] = Field(default_factory=list)
    examples: List[LocalizedExample] = Field(default_factory=list)
    detection_prompt: str
    parameters: List[ParameterConfig] = Field(default_factory=list)
    action: str
    fallback_timeout_prompt: Optional[str] = None
    fallback_error_prompt: Optional[str] = None


# ===================== LLM Configuration =====================
class GenerationConfig(BaseModelWithDatetime):
    max_new_tokens: int = 512
    temperature: float = 0.7
    top_p: float = 0.9
    top_k: Optional[int] = None
    repetition_penalty: Optional[float] = None
    do_sample: Optional[bool] = True
    num_beams: Optional[int] = None
    length_penalty: Optional[float] = None
    early_stopping: Optional[bool] = None


class LLMConfiguration(BaseModelWithDatetime):
    repo_id: str
    generation_config: GenerationConfig = Field(default_factory=GenerationConfig)
    use_fine_tune: bool = False
    fine_tune_zip: Optional[str] = ""


# ===================== Version Models =====================
class VersionConfig(BaseModelWithDatetime):
    no: int
    caption: str
    description: Optional[str] = None
    published: bool = False
    deleted: bool = False
    general_prompt: str
    welcome_prompt: Optional[str] = None
    llm: LLMConfiguration
    intents: List[IntentConfig] = Field(default_factory=list)
    created_date: str
    created_by: str
    publish_date: Optional[str] = None
    published_by: Optional[str] = None
    last_update_date: Optional[str] = None
    last_update_user: Optional[str] = None

# ===================== Project Models =====================
class ProjectConfig(BaseModelWithDatetime):
    id: int
    name: str
    caption: str
    icon: Optional[str] = "folder"
    description: Optional[str] = None
    enabled: bool = True
    default_locale: str = "tr"
    supported_locales: List[str] = Field(default_factory=lambda: ["tr"])
    timezone: str = "Europe/Istanbul"
    region: str = "tr-TR"
    versions: List[VersionConfig] = Field(default_factory=list)
    version_id_counter: int = 1
    deleted: bool = False
    created_date: str
    created_by: str
    last_update_date: Optional[str] = None
    last_update_user: Optional[str] = None


# ===================== API Models =====================
class RetryConfig(BaseModelWithDatetime):
    retry_count: int = 3
    backoff_seconds: int = 2
    strategy: str = "static"  # static, exponential


class AuthConfig(BaseModelWithDatetime):
    enabled: bool
    token_endpoint: Optional[str] = None
    response_token_path: Optional[str] = None
    token_request_body: Optional[Dict[str, Any]] = None
    token_refresh_endpoint: Optional[str] = None
    token_refresh_body: Optional[Dict[str, Any]] = None


class ResponseMapping(BaseModelWithDatetime):
    variable_name: str
    type: str  # str, int, float, bool, date
    json_path: str
    caption: List[LocalizedCaption]


class APIConfig(BaseModelWithDatetime):
    name: str
    url: str
    method: str = "POST"
    headers: Dict[str, str] = Field(default_factory=dict)
    body_template: Dict[str, Any] = Field(default_factory=dict)
    timeout_seconds: int = 10
    retry: RetryConfig = Field(default_factory=RetryConfig)
    proxy: Optional[str] = None
    auth: Optional[AuthConfig] = None
    response_prompt: Optional[str] = None
    response_mappings: List[ResponseMapping] = Field(default_factory=list)
    deleted: bool = False
    created_date: Optional[str] = None
    created_by: Optional[str] = None
    last_update_date: Optional[str] = None
    last_update_user: Optional[str] = None


# ===================== Activity Log =====================
class ActivityLogEntry(BaseModelWithDatetime):
    id: Optional[int] = None 
    timestamp: str
    username: str
    action: str
    entity_type: str
    entity_name: Optional[str] = None
    details: Optional[str] = None

# ===================== Root Configuration =====================
class ServiceConfig(BaseModelWithDatetime):
    global_config: GlobalConfig = Field(alias="config")
    projects: List[ProjectConfig] = Field(default_factory=list)
    apis: List[APIConfig] = Field(default_factory=list)
    activity_log: List[ActivityLogEntry] = Field(default_factory=list)
    project_id_counter: int = 1
    last_update_date: Optional[str] = None
    last_update_user: Optional[str] = None
    
    class Config:
        populate_by_name = True
    
    def build_index(self) -> None:
        """Build indexes for quick lookup"""
        # This method can be extended to build various indexes
        pass
    
    def get_api(self, api_name: str) -> Optional[APIConfig]:
        """Get API config by name"""
        return next((api for api in self.apis if api.name == api_name), None)


# For backward compatibility - alias
GlobalConfiguration = GlobalConfig