//go:build mage

package main

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

	"codeflow.dananglin.me.uk/linux-home/manager/magefiles/internal/config"
	"codeflow.dananglin.me.uk/linux-home/manager/magefiles/internal/utilities"
)

// BashProfile manages the user's Bash Profile using their configuration and the Bash Profile template.
func BashProfile() error {
	const (
		bashProfileTemplateFile string = "bash/profile.gotmpl"
		managedBashProfile      string = "managed/bash_profile"
		defaultFilename         string = ".bash_profile"
	)

	homeDirectory, err := os.UserHomeDir()
	if err != nil {
		return fmt.Errorf("unable to get the user's home configuration directory: %w", err)
	}

	cfg, err := config.NewConfig()
	if err != nil {
		return fmt.Errorf("unable to load the configuration: %w", err)
	}

	if !cfg.BashProfile.Manage {
		return nil
	}

	if err := utilities.RenderTemplate(cfg, bashProfileTemplateFile, managedBashProfile); err != nil {
		return fmt.Errorf("unable to generate the Bash Profile: %w", err)
	}

	filename := cfg.BashProfile.Filename
	if filename == "" {
		filename = defaultFilename
	}

	symlinkPath := filepath.Join(homeDirectory, filename)

	if err := utilities.EnsureSymlink(managedBashProfile, symlinkPath); err != nil {
		return err
	}

	return nil
}