package usecase

import (
	"context"

	"cursor-api-proxy/pkg/domain/entity"
)

// ChatUsecase defines the interface for chat operations
type ChatUsecase interface {
	Execute(ctx context.Context, input ChatInput) (ChatOutput, error)
	Stream(ctx context.Context, input ChatInput, callback func(entity.StreamChunk)) error
}

// ChatInput represents the input for chat operations
type ChatInput struct {
	Model    string
	Messages []entity.Message
	Tools    []entity.Tool
	Stream   bool
}

// ChatOutput represents the output from chat operations
type ChatOutput struct {
	Content   string
	Thinking  string
	ToolCalls []entity.ToolCall
}

// AgentRunner defines the interface for running AI agents
type AgentRunner interface {
	RunSync(ctx context.Context, config interface{}, args []string) (RunResult, error)
	RunStream(ctx context.Context, config interface{}, args []string, onLine func(string)) (StreamResult, error)
}

// RunResult represents the result of a synchronous agent run
type RunResult struct {
	Code   int
	Stdout string
	Stderr string
}

// StreamResult represents the result of a streaming agent run
type StreamResult struct {
	Code   int
	Stderr string
}