package main

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"log"
	"maps"
	"net/http"

	"gitea.kleinsense.nl/DariusKlein/kleinTodo/client/todo/httpClient"
	"gitea.kleinsense.nl/DariusKlein/kleinTodo/common"
	"github.com/urfave/cli/v3"
)

// Sync Command
func Sync() *cli.Command {
	return &cli.Command{
		Name:   "sync",
		Usage:  "sync with kleinTodo server",
		Action: syncAction,
		Flags:  loginFlags(),
	}
}

// syncAction logic for Template
func syncAction(context context.Context, c *cli.Command) error {
	store, err := common.GetTodoDataStore()
	if err != nil {
		return err
	}
	serverTodos := store.GetTodos(cfg.Server.Credentials.Username)

	var todos []common.Todo

	for todo := range maps.Values(serverTodos) {
		todos = append(todos, todo)
	}

	payload, err := json.Marshal(common.TodoList{Todos: todos})
	if err != nil {
		return fmt.Errorf("error marshaling credentials: %w", err)
	}

	req, err := http.NewRequest("POST", cfg.Server.Url, bytes.NewBuffer(payload))
	if err != nil {
		return fmt.Errorf("error creating request: %w", err)
	}
	req.Header.Set("Content-Type", "application/json")

	resp, err := httpClient.GetHttpClient(cfg.Server.Token).Do(req)
	if err != nil {
		return fmt.Errorf("error sending request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return fmt.Errorf("failed to read response body: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("request failed with status %d: %s", resp.StatusCode, string(body))
	}

	var response common.SyncResponse

	if err := json.Unmarshal(body, &response); err != nil {
		return fmt.Errorf("failed to decode successful response: %w", err)
	}

	prettyJSON, err := json.MarshalIndent(response, "", "  ")
	if err != nil {
		log.Fatalf("Failed to generate json: %s", err)
	}

	// Print the string version of the byte slice.
	fmt.Printf("%s\n", prettyJSON)

	return nil
}