package api

import (
	"context"

	"git.mlow.ca/mlow/lmcli/pkg/lmcli/model"
)

type ReplyCallback func(model.Message)

type Chunk struct {
	Content    string
	TokenCount uint
}

type ChatCompletionClient interface {
	// CreateChatCompletion requests a response to the provided messages.
	// Replies are appended to the given replies struct, and the
	// complete user-facing response is returned as a string.
	CreateChatCompletion(
		ctx context.Context,
		params model.RequestParameters,
		messages []model.Message,
		callback ReplyCallback,
	) (string, error)

	// Like CreateChageCompletion, except the response is streamed via
	// the output channel as it's received.
	CreateChatCompletionStream(
		ctx context.Context,
		params model.RequestParameters,
		messages []model.Message,
		callback ReplyCallback,
		output chan<- Chunk,
	) (string, error)
}