llm

type BackendType string

type ChatCompletionResult struct {
	Content      string
	ToolCalls    []ToolCallResult
	FinishReason string
	Error        error
}

type Client struct {
	// contains filtered or unexported fields
}

type Config struct {
	APIKey            string
	BaseURL           string
	Model             string
	Timeout           time.Duration
	SkipPersonaPrompt bool
	SimulateTyping    bool
	TypingSpeed       int // chars per second

	// Google Cloud authentication (for Gemini/Vertex AI)
	GoogleCredentialsFile string // Path to service account JSON file
	GoogleUseADC          bool   // Use Application Default Credentials

	// Collections (xAI only)
	Collections *config.CollectionsConfig
	XAIFeatures *config.XAIFeaturesConfig
}

type GoogleBackend struct {
	// contains filtered or unexported fields
}

type LLMBackend interface {
	// SendMessageStream sends a message with streaming callback.
	// The callback receives chunks as they arrive from the LLM.
	// Returns error if the request fails.
	SendMessageStream(ctx context.Context, messages []tui.ChatMessage,
		tools []tui.SkillDefinition, callback StreamCallback) error

	// SendMessageSync sends a message and returns the complete result.
	// This is useful for non-streaming use cases or testing.
	// Returns the full chat completion result or error.
	SendMessageSync(ctx context.Context, messages []tui.ChatMessage,
		tools []tui.SkillDefinition) (*ChatCompletionResult, error)

	// SetSystemPrompt sets the system prompt (Celeste persona).
	// This configures the LLM's behavior and character.
	SetSystemPrompt(prompt string)

	// Close cleans up resources (e.g., network connections).
	// Should be called when the backend is no longer needed.
	Close() error
}

type OpenAIBackend struct {
	// contains filtered or unexported fields
}

type SimulatedStream struct {
	// contains filtered or unexported fields
}

type SimulatedStreamConfig struct {
	TypingSpeed  int     // Characters per second
	GlitchChance float64 // Chance of corruption effect (0-1)
	MinDelay     time.Duration
	MaxDelay     time.Duration
}

type StreamCallback func(chunk StreamChunk)

type StreamChunk struct {
	Content      string
	IsFirst      bool
	IsFinal      bool
	FinishReason string
	ToolCalls    []ToolCallResult
	Usage        *TokenUsage // Only populated on final chunk with stream_options
}

type StreamState struct {
	// contains filtered or unexported fields
}

type Summarizer struct {
	// contains filtered or unexported fields
}

type TokenUsage struct {
	PromptTokens     int
	CompletionTokens int
	TotalTokens      int
}

type ToolCallResult struct {
	ID        string
	Name      string
	Arguments string
}

type XAIBackend struct {
	// contains filtered or unexported fields
}