package vikunja

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"os"
)

type Task struct {
	Title       string `json:"title"`
	Description string `json:"description"`
	Status      int    `json:"status"` // Assuming 1 is for completed tasks
}

func GetTasks(instance, user, from, to string) ([]Task, error) {
	req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("https://%s/api/v1/user/tasks", instance), nil)
	if err != nil {
		return nil, fmt.Errorf("error building vikunja request: %w", err)
	}
	q := req.URL.Query()
	q.Add("user_id", user)
	q.Add("status", "1") // Assuming 1 is for completed tasks
	req.URL.RawQuery = q.Encode()
	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", os.Getenv("VIKUNJA_TOKEN")))
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("error executing vikunja request: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode >= 400 {
		b := bytes.NewBuffer(nil)
		io.Copy(b, resp.Body)
		return nil, fmt.Errorf("error talking to vikunja: %s", b.String())
	}

	var tasks []Task
	err = json.NewDecoder(resp.Body).Decode(&tasks)
	if err != nil {
		return nil, fmt.Errorf("error decoding vikunja response: %w", err)
	}

	return tasks, nil
}