package manifest

import (
	"encoding/json"
	"errors"
	"fmt"
	"io/ioutil"
	"net/http"
	"train/pkg/config"
)

type Manifest struct {
	Name         string            `json:"name"`
	Version      string            `json:"version"`
	Mode         string            `json:"mode"`      
	Source       string            `json:"source"`    
	Checksum     string            `json:"checksum"`
	Dependencies []string          `json:"dependencies"`
	Build        []string          `json:"build"`     
	Binaries     map[string]string `json:"binaries"`  
	runtime.GOOS+"_"+runtime.GOARCH
}

func FetchManifest(name string) (*Manifest, error) {
	cfg, err := config.LoadConfig()
	if err != nil {
		return nil, err
	}
	var lastErr error
	for _, repo := range cfg.Repositories {
		url := fmt.Sprintf("%s/%s/manifest.json", repo, name)
		resp, err := http.Get(url)
		if err != nil {
			lastErr = err
			continue
		}
		defer resp.Body.Close()
		if resp.StatusCode != 200 {
			lastErr = errors.New("пакет не найден в репозитории " + repo)
			continue
		}
		data, err := ioutil.ReadAll(resp.Body)
		if err != nil {
			lastErr = err
			continue
		}
		var m Manifest
		if err := json.Unmarshal(data, &m); err != nil {
			lastErr = err
			continue
		}
		return &m, nil
	}
	if lastErr == nil {
		lastErr = errors.New("не найден ни один репозиторий")
	}
	return nil, lastErr
}