package main

import (
	"bufio"
	"os"
	"path/filepath"
	"strings"
)

type RepoConfig struct {
	Name   string
	URL    string
	Path   string
	Branch string // branche à suivre (défaut: "master")
}

type SelfUpdateConfig struct {
	URL     string
	ExeName string
	Branch  string
}

func loadConfig() ([]RepoConfig, SelfUpdateConfig, error) {
	cfgPath := filepath.Join(exeDir(), "config.ini")
	f, err := os.Open(cfgPath)
	if err != nil {
		return nil, SelfUpdateConfig{}, err
	}
	defer f.Close()

	var repos []RepoConfig
	var su SelfUpdateConfig
	section := ""
	kv := map[string]string{}

	flush := func() {
		switch {
		case strings.HasPrefix(section, "repo:"):
			name := strings.TrimPrefix(section, "repo:")
			if kv["url"] != "" && kv["path"] != "" {
				repos = append(repos, RepoConfig{
					Name:   name,
					URL:    kv["url"],
					Path:   kv["path"],
					Branch: kv["branch"], // vide = auto-détection
				})
			}
		case section == "self-update":
			su.URL = strings.TrimRight(kv["url"], "/")
			su.ExeName = kv["exe_name"]
			if su.ExeName == "" {
				su.ExeName = "GitUpdateChecker.exe"
			}
			su.Branch = kv["branch"]
			if su.Branch == "" {
				su.Branch = "master"
			}
		}
		kv = map[string]string{}
	}

	scanner := bufio.NewScanner(f)
	for scanner.Scan() {
		line := strings.TrimSpace(scanner.Text())
		if line == "" || strings.HasPrefix(line, ";") || strings.HasPrefix(line, "#") {
			continue
		}
		if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
			flush()
			section = strings.ToLower(strings.TrimSpace(line[1 : len(line)-1]))
			continue
		}
		if idx := strings.IndexByte(line, '='); idx > 0 {
			k := strings.TrimSpace(strings.ToLower(line[:idx]))
			v := strings.TrimSpace(line[idx+1:])
			kv[k] = v
		}
	}
	flush()

	return repos, su, scanner.Err()
}