cmd

var FormatCmd = &cobra.Command{
	Use:   "format [flags]",
	Short: "Format jsonnet files",
	Long:  `Format jsonnet configuration files`,

	Args: cobra.MinimumNArgs(0),
	Run: func(cmd *cobra.Command, args []string) {
		// First get a list of all files in the base directory and subdirectories. Ignore .git directories.
		var fileList []string
		err := filepath.Walk(RootConfig.BaseDir, func(path string, info fs.FileInfo, err error) error {
			if info.IsDir() {
				if info.Name() == ".git" {
					return filepath.SkipDir
				}

				return nil
			}
			fileList = append(fileList, path)

			return nil
		})
		util.FatalErrorCheck("Error walking the path "+RootConfig.BaseDir, err)

		fileList = util.Filter(fileList, func(s string) bool {
			var result bool
			for _, f := range strings.Split(cmdFormatFlags.Includes, ",") {
				t, _ := filepath.Match(f, s)
				if t {
					return t
				}
				result = result || t
			}

			return result
		})

		fileList = util.Filter(fileList, func(s string) bool {
			var result bool
			for _, f := range strings.Split(cmdFormatFlags.Excludes, ",") {
				t, _ := filepath.Match(f, s)
				if t {
					return !t
				}
				result = result || t
			}

			return !result
		})
		log.Debug().Msg("Filtered file list: " + fmt.Sprintf("%v", fileList))
		log.Debug().Msg("Formatting files...")

		var waitGroup sync.WaitGroup
		parallel, err := cmd.Flags().GetInt("parallel")
		util.FatalErrorCheck("Error getting parallel flag", err)
		log.Debug().Msg("Parallel set to " + strconv.Itoa(parallel))
		ants_file, _ := ants.NewPool(parallel)
		for _, filename := range fileList {
			waitGroup.Add(1)
			_ = ants_file.Submit(func() {
				defer waitGroup.Done()
				var bytes []byte
				bytes, err = os.ReadFile(filepath.Clean(filename))
				output, err := formatter.Format(filename, string(bytes), util.GetDefaultFormatOptions())
				if err != nil {
					fmt.Fprintln(os.Stderr, err.Error())

					return
				}
				err = os.WriteFile(filepath.Clean(filename), []byte(output), 0600)
				if err != nil {
					fmt.Fprintln(os.Stderr, err.Error())

					return
				}
			})
		}
		waitGroup.Wait()
	},
}

var GenerateCmd = &cobra.Command{
	Use:   "generate [flags]",
	Short: "Generate components",
	Long:  `Generate components in clusters`,

	Args: cobra.MinimumNArgs(0),
	Run:  GenerateCommand,
}

var GetClustersCmd = &cobra.Command{
	Use:   "clusters [flags]",
	Short: "Get all clusters",
	Long:  "Get all clusters defined in kr8 config hierarchy",
	Run: func(cmd *cobra.Command, args []string) {

		clusters, err := util.GetClusterFilenames(RootConfig.ClusterDir)
		util.FatalErrorCheck("Error getting clusters", err)

		if cmdGetFlags.NoTable {
			for _, c := range clusters {
				println(c.Name + ": " + c.Path)
			}

			return
		}

		var entry []string
		table := tablewriter.NewWriter(os.Stdout)
		table.SetHeader([]string{"Name", "Path"})

		for _, c := range clusters {
			entry = append(entry, c.Name)
			entry = append(entry, c.Path)
			table.Append(entry)
			entry = entry[:0]
		}
		table.Render()

	},
}

var GetCmd = &cobra.Command{
	Use:   "get",
	Short: "Display one or many kr8 resources",
	Long:  `Displays information about kr8 resources such as clusters and components`,
}

var GetComponentsCmd = &cobra.Command{
	Use:   "components [flags]",
	Short: "Get all components",
	Long:  "Get all available components defined in the kr8 config hierarchy",
	Run: func(cmd *cobra.Command, args []string) {

		if cmdGetFlags.Cluster == "" && cmdGetFlags.ClusterParams == "" {
			log.Fatal().Msg("Please specify a --cluster name and/or --clusterparams file")
		}

		var params []string
		if cmdGetFlags.Cluster != "" {
			clusterPath := util.GetClusterPaths(RootConfig.ClusterDir, cmdGetFlags.Cluster)
			params = util.GetClusterParamsFilenames(RootConfig.ClusterDir, clusterPath)
		}
		if cmdGetFlags.ClusterParams != "" {
			params = append(params, cmdGetFlags.ClusterParams)
		}

		jvm := jnetvm.JsonnetRenderFiles(RootConfig.VMConfig, params, "._components", true, "", "components")
		if cmdGetFlags.ParamField != "" {
			value := gjson.Get(jvm, cmdGetFlags.ParamField)
			if value.String() == "" {
				log.Fatal().Msg("Error getting param: " + cmdGetFlags.ParamField)
			} else {
				formatted := util.Pretty(jvm, RootConfig.Color)
				fmt.Println(formatted)
			}
		} else {
			formatted := util.Pretty(jvm, RootConfig.Color)
			fmt.Println(formatted)
		}
	},
}

var GetParamsCmd = &cobra.Command{
	Use:   "params [flags]",
	Short: "Get parameter for components and clusters",
	Long:  "Get parameters assigned to clusters and components in the kr8 config hierarchy",
	Run: func(cmd *cobra.Command, args []string) {
		if cmdGetFlags.Cluster == "" {
			log.Fatal().Msg("Please specify a --cluster")
		}

		var cList []string
		if cmdGetFlags.Component != "" {
			cList = append(cList, cmdGetFlags.Component)
		}

		params := jnetvm.JsonnetRenderClusterParams(
			RootConfig.VMConfig,
			cmdGetFlags.Cluster,
			cList,
			cmdGetFlags.ClusterParams,
			true,
		)

		if cmdGetFlags.ParamField == "" {
			if cmdGetFlags.Component != "" {
				result := gjson.Get(params, cmdGetFlags.Component).String()
				fmt.Println(util.Pretty(result, RootConfig.Color))
			} else {
				fmt.Println(util.Pretty(params, RootConfig.Color))
			}

			return
		}

		if cmdGetFlags.ParamField != "" {
			value := gjson.Get(params, cmdGetFlags.ParamField)
			if value.String() == "" {
				log.Fatal().Msg("Error getting param: " + cmdGetFlags.ParamField)
			}

			fmt.Println(value)
		}
	},
}

var InitClusterCmd = &cobra.Command{
	Use:   "cluster [flags]",
	Short: "Init a new cluster config file",
	Long:  "Initialize a new cluster configuration file",
	Run: func(cmd *cobra.Command, args []string) {
		cSpec := types.Kr8ClusterSpec{
			Name:               cmdInitFlags.ClusterName,
			ClusterDir:         RootConfig.ClusterDir,
			PostProcessor:      "function(input) input",
			GenerateDir:        "generated",
			GenerateShortNames: false,
			PruneParams:        false,
		}

		if cmdInitFlags.Interactive {
			prompt := &survey.Input{
				Message: "Set the cluster name",
				Default: cmdInitFlags.ClusterName,
				Help:    "Distinct name for the cluster",
			}
			util.FatalErrorCheck("Invalid cluster name", survey.AskOne(prompt, &cSpec.Name))

			prompt = &survey.Input{
				Message: "Set the cluster configuration directory",
				Default: RootConfig.ClusterDir,
				Help:    "Set the root directory for the new cluster",
			}
			util.FatalErrorCheck("Invalid cluster directory", survey.AskOne(prompt, &cSpec.ClusterDir))

			promptB := &survey.Confirm{
				Message: "Generate short names for output file names?",
				Default: cSpec.GenerateShortNames,
				Help:    "Shortens component names and file structure",
			}
			util.FatalErrorCheck("Invalid option", survey.AskOne(promptB, &cSpec.GenerateShortNames))

			promptB = &survey.Confirm{
				Message: "Prune component parameters?",
				Default: cSpec.PruneParams,
				Help:    "This removes empty and null parameters from configuration",
			}
			util.FatalErrorCheck("Invalid option", survey.AskOne(promptB, &cSpec.PruneParams))
		}

		util.FatalErrorCheck("Error generating cluster jsonnet file", kr8init.GenerateClusterJsonnet(cSpec, cSpec.ClusterDir))
	},
}

var InitCmd = &cobra.Command{
	Use:   "init",
	Short: "Initialize kr8 config repos, components and clusters",
	Long: `kr8 requires specific directories and exists for its config to work.
This init command helps in creating directory structure for repos, clusters and 
components`,
}

var InitComponentCmd = &cobra.Command{
	Use:   "component [flags]",
	Short: "Init a new component config file",
	Long:  "Initialize a new component configuration file",
	Run: func(cmd *cobra.Command, args []string) {

		if cmdInitFlags.Interactive {
			prompt := &survey.Input{
				Message: "Enter component name",
				Default: cmdInitFlags.ComponentName,
				Help:    "Enter the name of the component you want to create",
			}
			util.FatalErrorCheck("Invalid component name", survey.AskOne(prompt, &cmdInitFlags.ComponentName))

			prompt = &survey.Input{
				Message: "Enter component directory",
				Default: RootConfig.ComponentDir,
				Help:    "Enter the directory where you want to create the component",
			}
			util.FatalErrorCheck("Invalid component directory", survey.AskOne(prompt, &RootConfig.ComponentDir))

			promptS := &survey.Select{
				Message: "Select component type",
				Options: []string{"jsonnet", "yml", "tpl", "chart"},
				Help:    "Select the type of component you want to create",
				Default: "jsonnet",
				Description: func(value string, index int) string {
					switch value {
					case "jsonnet":
						return "Use a Jsonnet file to describe the component resources"
					case "yml":
						return "Use a yml (docker-compose) file to describe the component resources"
					case "tpl":
						return "Use a template file to describe the component resources"
					case "chart":
						return "Use a Helm chart to describe the component resources"
					default:
						return ""
					}
				},
			}
			util.FatalErrorCheck("Invalid component type", survey.AskOne(promptS, &cmdInitFlags.ComponentType))
		}
		util.FatalErrorCheck(
			"Error generating component jsonnet",
			kr8init.GenerateComponentJsonnet(cmdInitFlags, RootConfig.ComponentDir),
		)
	},
}

var InitRepoCmd = &cobra.Command{
	Use:   "repo [flags] dir",
	Args:  cobra.MinimumNArgs(1),
	Short: "Initialize a new kr8 config repo",
	Long: `Initialize a new kr8 config repo by downloading the kr8 config skeleton repo
and initialize a git repo so you can get started`,
	Run: func(cmd *cobra.Command, args []string) {
		if len(args) == 0 {
			log.Fatal().Msg("Error: no directory specified")
		}
		outDir := args[len(args)-1]
		log.Debug().Msg("Initializing kr8 config repo in " + outDir)
		if cmdInitFlags.InitUrl != "" {
			util.FatalErrorCheck(
				"Issue fetching repo",
				util.FetchRepoUrl(cmdInitFlags.InitUrl, outDir, cmdInitFlags.Fetch),
			)

			return
		}

		cmdInitOptions := kr8init.Kr8InitOptions{
			InitUrl:       cmdInitFlags.InitUrl,
			ClusterName:   cmdInitFlags.ClusterName,
			ComponentName: "example-component",
			ComponentType: "jsonnet",
			Interactive:   false,
			Fetch:         false,
		}
		clusterOptions := types.Kr8ClusterSpec{
			PostProcessor:      "",
			GenerateDir:        "generated",
			GenerateShortNames: false,
			PruneParams:        false,
			ClusterDir:         "clusters",
			Name:               cmdInitFlags.ClusterName,
		}
		util.FatalErrorCheck(
			"Issue creating cluster.jsonnet",
			kr8init.GenerateClusterJsonnet(clusterOptions, outDir+"/clusters"),
		)
		util.FatalErrorCheck(
			"Issue creating example component.jsonnet",
			kr8init.GenerateComponentJsonnet(cmdInitOptions, outDir+"/components"),
		)
		util.FatalErrorCheck(
			"Issue creating lib folder",
			kr8init.GenerateLib(cmdInitFlags.Fetch, outDir+"/lib"),
		)
		util.FatalErrorCheck(
			"Issue creating Readme.md",
			kr8init.GenerateReadme(outDir, cmdInitOptions, clusterOptions),
		)
	},
}

var JsonnetCmd = &cobra.Command{
	Use:   "jsonnet",
	Short: "Jsonnet utilities",
	Long:  `Utility commands to process jsonnet`,
}

var JsonnetRenderCmd = &cobra.Command{
	Use:   "render [flags] file [file ...]",
	Short: "Render a jsonnet file",
	Long:  `Render a jsonnet file to JSON or YAML`,

	Args: cobra.MinimumNArgs(1),
	Run: func(cmd *cobra.Command, args []string) {
		for _, f := range args {
			jvm.JsonnetRender(cmdFlagsJsonnet, f, RootConfig.VMConfig)
		}
	},
}

var RenderCmd = &cobra.Command{
	Use:   "render",
	Short: "Render files",
	Long:  `Render files in jsonnet or YAML`,
}

var RenderHelmCmd = &cobra.Command{
	Use:   "helm",
	Short: "Clean YAML stream from Helm Template output - Reads from Stdin",
	Long:  `Removes Null YAML objects from a YAML stream`,
	Run: func(cmd *cobra.Command, args []string) {
		decoder := yaml.NewYAMLReader(bufio.NewReader(os.Stdin))
		jsa := [][]byte{}
		for {
			bytes, err := decoder.Read()
			if errors.Is(err, io.EOF) {
				break
			} else if err != nil {
				util.FatalErrorCheck("Error decoding yaml stream", err)
			}
			if len(bytes) == 0 {
				continue
			}
			jsonData, err := yaml.ToJSON(bytes)
			util.FatalErrorCheck("Error converting yaml to JSON", err)
			if string(jsonData) == "null" {

				continue
			}
			_, _, err = unstructured.UnstructuredJSONScheme.Decode(jsonData, nil, nil)
			util.FatalErrorCheck("Error handling unstructured JSON", err)
			jsa = append(jsa, jsonData)
		}
		for _, j := range jsa {
			out, err := goyaml.JSONToYAML(j)
			util.FatalErrorCheck("Error encoding JSON to YAML", err)
			fmt.Println("---")
			fmt.Println(string(out))
		}
	},
}

var RenderJsonnetCmd = &cobra.Command{
	Use:   "jsonnet file [file ...]",
	Short: "Render a jsonnet file",
	Long:  `Render a jsonnet file to JSON or YAML`,

	Args: cobra.MinimumNArgs(1),
	Run: func(cmd *cobra.Command, args []string) {
		for _, fileName := range args {
			jvm.JsonnetRender(
				types.CmdJsonnetOptions{
					Prune:         cmdRenderFlags.Prune,
					ClusterParams: cmdRenderFlags.ClusterParams,
					Cluster:       cmdRenderFlags.Cluster,
					Component:     cmdRenderFlags.ComponentName,
					Format:        cmdRenderFlags.Format,
					Color:         false,
				}, fileName, RootConfig.VMConfig)
		}
	},
}

var RootCmd = &cobra.Command{
	Use:   "kr8",
	Short: "Kubernetes config parameter framework",
	Long: `A tool to generate Kubernetes configuration from a hierarchy
	of jsonnet files`,
}

var VersionCmd = &cobra.Command{
	Use:   "version",
	Short: "Return the current version of kr8",
	Long:  `return the current version of kr8`,
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Println(RootCmd.Use + " Plus Version: " + version)
		fmt.Println("jsonnet: github.com/google/go-jsonnet v0.20.0")
		fmt.Println("yml: github.com/ghodss/yaml v1.0.0")
		fmt.Println("template: github.com/Masterminds/sprig/v3 v3.2.3")
		fmt.Println("helm: github.com/grafana/tanka v0.27.1")
		fmt.Println("kompose: github.com/kubernetes/kompose v1.35.0")
	},
}