scripts.go

package main

import (
	"context"
	"os"
	"path"
	"text/template"
	"time"
)

func removeOldScripts(ctx context.Context, config Config) {
	files, err := os.ReadDir(config.FlatpakDir)
	if err != nil {
		log.ErrorContext(ctx, "Error reading output directory", "err", err)
		os.Exit(1)
	}

	for _, file := range files {
		f, err := os.Open(path.Join(config.FlatpakDir, file.Name()))
		if err != nil {
			log.ErrorContext(ctx, "Error opening file", "err", err, "file", file.Name())
			continue
		}
		content := make([]byte, 30)
		i, err := f.ReadAt(content, 14)
		if err != nil || i != 30 || string(content) != "**Generated by flatpak-alias**" {
			log.WarnContext(ctx, "Not a managed file", "file", file.Name())
			continue
		}

		err = os.Remove(path.Join(config.FlatpakDir, file.Name()))
		if err != nil {
			log.ErrorContext(ctx, "Error deleting file", "err", err, "file", file.Name())
		}
	}
}

func generateScripts(ctx context.Context, apps []Flatpak, scriptTemplate *template.Template, config Config) {
	now := time.Now()
	for _, app := range apps {
		log.InfoContext(ctx, "Found application", "name", app.Application.Name, "command", app.Application.Command)
		app.Timestamp = now

		if _, err := os.Stat(path.Join(config.FlatpakDir, app.Application.Command)); err == nil {
			log.WarnContext(ctx, "File already exists", "command", app.Application.Command)
			continue
		}

		file, err := os.Create(path.Join(config.FlatpakDir, app.Application.Command))
		if err != nil {
			log.ErrorContext(ctx, "Error creating file", "err", err, "command", app.Application.Command)
			continue
		}
		err = scriptTemplate.Execute(file, app)
		if err != nil {
			log.ErrorContext(ctx, "Error writing template", "err", err, "command", app.Application.Command)
			continue
		}

		os.Chmod(path.Join(config.FlatpakDir, app.Application.Command), 0755)
	}
}