package lib

import (
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
)

type GiteaFetcher struct {
	URL   string
	Token string
	Cache *Cache
}

func (f GiteaFetcher) Fetch() string {
	req, _ := http.NewRequest("GET", f.URL, nil)
	if f.Token != "" {
		req.Header.Set("Authorization", "token "+f.Token)
	}
	res, err := http.DefaultClient.Do(req)
	if err != nil {
		return ""
	}
	defer res.Body.Close()

	var r []struct {
		Sha    string `json:"sha"`
		Commit struct {
			Message string `json:"message"`
		} `json:"commit"`
		HTMLURL string `json:"html_url"`
	}
	json.NewDecoder(res.Body).Decode(&r)
	if len(r) == 0 {
		return ""
	}
	c := r[0]

	if f.Cache.TryUpdate("gitea_"+url.QueryEscape(f.URL), c.Sha) {
		return fmt.Sprintf("Gitea: %s <%s>", c.Commit.Message, c.HTMLURL)
	}
	return ""
}