package cmd

import (
	"bytes"
	"fmt"
	"os"

	"github.com/pterm/pterm"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
	"gopkg.in/yaml.v3"

	"gitea.libretechconsulting.com/rmcguire/git-project-manager/internal/config"
	"gitea.libretechconsulting.com/rmcguire/git-project-manager/internal/remotes/info"
)

var configGenerateCmd = &cobra.Command{
	Use:     "generate",
	Short:   "Generate a default configuration",
	Aliases: []string{"gen", "new", "default"},
	Long:    configGenCmdLong,
	Run:     runConfigGenerateCmd,
}

func runConfigGenerateCmd(cmd *cobra.Command, args []string) {
	var configFile string
	if viper.ConfigFileUsed() != "" {
		configFile = viper.ConfigFileUsed()
	} else {
		configFile = defConfigPath
	}

	plog.Debug("Using config file " + configFile)

	configFile, _ = resolvePath(configFile)

	newConf := promptConfigSettings(&conf)

	if write, _ := cmd.Flags().GetBool(FlagWrite); write {
		write, _ := pterm.DefaultInteractiveContinue.
			WithDefaultText("Really write config file?").
			WithOptions([]string{"yes", "no"}).
			Show()
		if write != "yes" {
			plog.Fatal("Aborting config file write")
		}

		writeConfigFile(newConf, configFile)
		plog.Info("Wrote config to file",
			plog.Args("file", configFile))

	} else {
		var c bytes.Buffer
		enc := yaml.NewEncoder(&c)
		enc.SetIndent(2)
		enc.Encode(newConf)
		plog.Info("Suggest running with --write or redirect (> " + configFile + ")")
		fmt.Print(c.String())
	}
}

func writeConfigFile(c *config.Config, path string) {
	file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0o640)
	if err != nil {
		plog.Error("Failed to prepare config for writing", plog.Args("error", err))
	}
	enc := yaml.NewEncoder(file)
	if err := enc.Encode(c); err != nil {
		plog.Fatal("Failed writing config file", plog.Args("file", path))
	}
}

func promptConfigSettings(c *config.Config) *config.Config {
	var gitRemote *info.RemoteInfo
	// Just pick the first if we have one, considering this
	// is meant to be a first-time use tool
	if len(c.Remotes) > 0 {
		gitRemote = &c.Remotes[0]
	} else {
		gitRemote = &config.DefaultConfig.Remotes[0]
		c.Remotes = append(c.Remotes, *gitRemote)
	}

	if host, err := pterm.DefaultInteractiveTextInput.
		WithDefaultValue(gitRemote.Host).
		WithDefaultText("Enter remote URL").
		Show(); err == nil {
		gitRemote.Host = host
	}

	if name, err := pterm.DefaultInteractiveTextInput.
		WithDefaultValue(gitRemote.Name).
		WithDefaultText("Enter remote name (e.g. My Private remote)").
		Show(); err == nil {
		gitRemote.Name = name
	}

	if token, err := pterm.DefaultInteractiveTextInput.
		WithMask("*").
		WithDefaultValue(gitRemote.Token).
		WithDefaultText("Enter remote Token").
		Show(); err == nil {
		gitRemote.Token = token
	}

	if remoteType, err := pterm.DefaultInteractiveSelect.
		WithOptions(info.RemoteTypesAll.Strings()).
		WithDefaultText("Git Clone Protocol").
		Show(); err == nil {
		gitRemote.Type = info.GetRemoteTypeFromString(remoteType)
	}

	if proto, err := pterm.DefaultInteractiveSelect.
		WithOptions([]string{string(info.CloneProtoHTTP), string(info.CloneProtoSSH)}).
		WithDefaultText("Git Clone Protocol").
		Show(); err == nil {
		if proto == "ssh" {
			gitRemote.CloneProto = info.CloneProtoSSH
		} else {
			gitRemote.CloneProto = info.CloneProtoHTTP
		}
	}

	if pPath, err := pterm.DefaultInteractiveTextInput.
		WithDefaultValue(c.ProjectPath).
		WithDefaultText("Enter path for projects and cache").
		Show(); err == nil {
		c.ProjectPath = pPath
	}

	if ownerOnly, err := pterm.DefaultInteractiveConfirm.
		WithDefaultText("Only cache projects you are owner of?").
		Show(); err == nil {
		if ownerOnly {
			c.Cache.Load.OwnerOnly = true
		} else {
			c.Cache.Load.OwnerOnly = false
		}
	}

	if dirMode, err := pterm.DefaultInteractiveConfirm.
		WithDefaultValue(true).
		WithDefaultText("Open project directories instead of main files (yes for vscode)?").
		Show(); err == nil {
		c.Editor.OpenDirectory = dirMode
	}

	return c
}

func init() {
	configCmd.AddCommand(configGenerateCmd)
	configGenerateCmd.PersistentFlags().Bool(FlagPrompt, false, "Prompt for settings")
	configGenerateCmd.PersistentFlags().Bool(FlagWrite, false, "Write config to file")
}