package cmd

import (
	"fmt"
	"log"
	"path/filepath"

	"github.com/spf13/afero"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
)

var linkCommand = &cobra.Command {
  Use: "link",
  Run: runLinkCommand,
}

func init() {
  RootCmd.AddCommand(linkCommand)
}

func runLinkCommand(cmd *cobra.Command, args []string) {
  fs := FileSystem
  fmt.Println("Symlinking dotfiles...")
  dotfileRoot := viper.Get("dotfile-path").(string)
  entries, err := afero.ReadDir(fs, dotfileRoot)
  if err != nil {
    log.Fatalf("Could not read dotfiles directory: %s\n",err)
  }
  for _, entry := range(entries) {
    configName := entry.Name()
    if configName == ".git"  || configName == "bender" {
      continue
    }
    dotPath := filepath.Join(dotfileRoot, entry.Name())

    configPath := viper.GetString(configName)
    if configPath == ""{
      fmt.Fprintf(cmd.OutOrStdout(), "Warning: could not find config for %s\n", entry.Name())
    }


    // destination needs to be removed before symlink
    if(DryRun) {
      log.Printf("Existing directory %s will be removed\n", configPath)

    } else {
      fs.RemoveAll(configPath)
    }

    testing := viper.Get("testing")

    if(DryRun) {
      log.Printf("Will link %s -> %s\n", configPath, dotPath)
    } else {
      if(testing == "true") {
        fmt.Fprintf(cmd.OutOrStdout(), "%s,%s", configPath, dotPath)
      } else {
        err = afero.OsFs.SymlinkIfPossible(afero.OsFs{}, dotPath, configPath)
      }
    }
    if err != nil {
      log.Fatalf("Cannot symlink %s: %s", entry.Name(), err.Error())
    }
  }

}