installed.go

package main

import (
	"fmt"
	"os"
	"path/filepath"
	"regexp"
	"runtime"

	tea "github.com/charmbracelet/bubbletea"
)

// loadInstalledMods scans the mods directory for installed mods
func loadInstalledMods(modsPath string) tea.Cmd {
	return func() tea.Msg {
		var installed []InstalledMod

		// Validate path
		if modsPath == "" {
			return installedModsLoadedMsg{mods: installed}
		}

		// Check if path exists
		if _, err := os.Stat(modsPath); os.IsNotExist(err) {
			return installedModsLoadedMsg{mods: installed}
		}

		// Read directory
		entries, err := os.ReadDir(modsPath)
		if err != nil {
			return installedModsLoadedMsg{mods: installed}
		}

		// Process each entry
		for _, entry := range entries {
			if !entry.IsDir() {
				continue
			}

			mod := parseModFolder(modsPath, entry.Name())
			installed = append(installed, mod)
		}

		return installedModsLoadedMsg{mods: installed}
	}
}

// parseModFolder creates an InstalledMod from a folder
func parseModFolder(basePath, folderName string) InstalledMod {
	modPath := filepath.Join(basePath, folderName)

	// Check if folder name is a Steam Workshop ID (all digits)
	isWorkshopID := regexp.MustCompile(`^\d+$`).MatchString(folderName)

	if isWorkshopID {
		return InstalledMod{
			ID:    folderName,
			Title: fmt.Sprintf("Workshop Mod #%s", folderName),
			Path:  modPath,
		}
	}

	// Regular mod folder
	return InstalledMod{
		ID:    "",
		Title: folderName,
		Path:  modPath,
	}
}

// getDefaultModsPath returns the default Kenshi mods path for the current platform
func getDefaultModsPath() string {
	switch runtime := runtime.GOOS; runtime {
	case "windows":
		// Common Steam locations on Windows
		paths := []string{
			`C:\Program Files (x86)\Steam\steamapps\workshop\content\233860`,
			`C:\Program Files\Steam\steamapps\workshop\content\233860`,
		}
		for _, path := range paths {
			if _, err := os.Stat(path); err == nil {
				return path
			}
		}
		return `C:\Steam\steamapps\workshop\content\233860`

	case "linux":
		home := os.Getenv("HOME")
		paths := []string{
			filepath.Join(home, ".steam", "steam", "steamapps", "workshop", "content", "233860"),
			filepath.Join(home, ".local", "share", "Steam", "steamapps", "workshop", "content", "233860"),
		}
		for _, path := range paths {
			if _, err := os.Stat(path); err == nil {
				return path
			}
		}
		return filepath.Join(home, ".steam", "steam", "steamapps", "workshop", "content", "233860")

	case "darwin":
		home := os.Getenv("HOME")
		return filepath.Join(home, "Library", "Application Support", "Steam", "steamapps", "workshop", "content", "233860")

	default:
		return ""
	}
}