package cli

import (
	"errors"
	"fmt"
	"strings"

	"github.com/spf13/cobra"

	"github.com/oam-dev/kubevela/apis/types"
	"github.com/oam-dev/kubevela/pkg/oam/discoverymapper"
	cmdutil "github.com/oam-dev/kubevela/pkg/utils/util"
	"github.com/oam-dev/kubevela/references/common"
)

// CapabilityCommandGroup commands for capability center
func CapabilityCommandGroup(c types.Args, ioStream cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "cap",
		Short: "Manage capability centers and installing/uninstalling capabilities",
		Long:  "Manage capability centers and installing/uninstalling capabilities",
		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
			return c.SetConfig()
		},
		Annotations: map[string]string{
			types.TagCommandType: types.TypeCap,
		},
	}
	cmd.AddCommand(
		NewCenterCommand(ioStream),
		NewCapListCommand(c, ioStream),
		NewCapInstallCommand(c, ioStream),
		NewCapUninstallCommand(c, ioStream),
	)
	return cmd
}

// NewCenterCommand Manage Capability Center
func NewCenterCommand(ioStream cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "center <command>",
		Short: "Manage Capability Center",
		Long:  "Manage Capability Center with config, sync, list",
	}
	cmd.AddCommand(
		NewCapCenterConfigCommand(ioStream),
		NewCapCenterSyncCommand(ioStream),
		NewCapCenterListCommand(ioStream),
		NewCapCenterRemoveCommand(ioStream),
	)
	return cmd
}

// NewCapCenterConfigCommand Configure (add if not exist) a capability center, default is local (built-in capabilities)
func NewCapCenterConfigCommand(ioStreams cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "config <centerName> <centerURL>",
		Short:   "Configure (add if not exist) a capability center, default is local (built-in capabilities)",
		Long:    "Configure (add if not exist) a capability center, default is local (built-in capabilities)",
		Example: `vela cap center config mycenter https://github.com/oam-dev/catalog/cap-center`,
		RunE: func(cmd *cobra.Command, args []string) error {
			argsLength := len(args)
			if argsLength < 2 {
				return errors.New("please set capability center with <centerName> and <centerURL>")
			}
			capName := args[0]
			capURL := args[1]
			token := cmd.Flag("token").Value.String()
			if err := common.AddCapabilityCenter(capName, capURL, token); err != nil {
				return err
			}
			ioStreams.Infof("Successfully configured capability center %s and sync from remote\n", capName)
			return nil
		},
	}
	AddTokenVarFlags(cmd)
	return cmd
}

// NewCapInstallCommand Install capability into cluster
func NewCapInstallCommand(c types.Args, ioStreams cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "install <center>/<name>",
		Short:   "Install capability into cluster",
		Long:    "Install capability into cluster",
		Example: `vela cap install mycenter/route`,
		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
			return c.SetConfig()
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			var err error
			argsLength := len(args)
			if argsLength < 1 {
				return errors.New("you must specify <center>/<name> for capability you want to install")
			}
			newClient, err := c.GetClient()
			if err != nil {
				return err
			}
			mapper, err := discoverymapper.New(c.Config)
			if err != nil {
				return err
			}
			if _, err = common.AddCapabilityIntoCluster(newClient, mapper, args[0]); err != nil {
				return err
			}
			return nil
		},
	}
	AddTokenVarFlags(cmd)
	return cmd
}

// NewCapUninstallCommand Uninstall capability from cluster
func NewCapUninstallCommand(c types.Args, ioStreams cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "uninstall <name>",
		Short:   "Uninstall capability from cluster",
		Long:    "Uninstall capability from cluster",
		Example: `vela cap uninstall route`,
		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
			return c.SetConfig()
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			if len(args) < 1 {
				return errors.New("you must specify <name> for capability you want to uninstall")
			}
			newClient, err := c.GetClient()
			if err != nil {
				return err
			}
			name := args[0]
			if strings.Contains(name, "/") {
				l := strings.Split(name, "/")
				if len(l) > 2 {
					return fmt.Errorf("invalid format '%s', you can't contain more than one / in name", name)
				}
				name = l[1]
			}
			env, err := GetEnv(cmd)
			if err != nil {
				return err
			}
			return common.RemoveCapability(env.Namespace, c, newClient, name, ioStreams)
		},
	}
	AddTokenVarFlags(cmd)
	return cmd
}

// NewCapCenterSyncCommand Sync capabilities from remote center, default to sync all centers
func NewCapCenterSyncCommand(ioStreams cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "sync [centerName]",
		Short:   "Sync capabilities from remote center, default to sync all centers",
		Long:    "Sync capabilities from remote center, default to sync all centers",
		Example: `vela cap center sync mycenter`,
		RunE: func(cmd *cobra.Command, args []string) error {
			var specified string
			if len(args) > 0 {
				specified = args[0]
			}
			if err := common.SyncCapabilityCenter(specified); err != nil {
				return err
			}
			ioStreams.Info("sync finished")
			return nil
		},
	}
	return cmd
}

// NewCapListCommand List capabilities from cap-center
func NewCapListCommand(c types.Args, ioStreams cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "ls [cap-center]",
		Short:   "List capabilities from cap-center",
		Long:    "List capabilities from cap-center",
		Example: `vela cap ls`,
		RunE: func(cmd *cobra.Command, args []string) error {
			var repoName string
			if len(args) > 0 {
				repoName = args[0]
			}
			env, err := GetEnv(cmd)
			if err != nil {
				return err
			}
			capabilityList, err := common.ListCapabilities(env.Namespace, c, repoName)
			if err != nil {
				return err
			}
			table := newUITable()
			table.AddRow("NAME", "CENTER", "TYPE", "DEFINITION", "STATUS", "APPLIES-TO")

			for _, c := range capabilityList {
				table.AddRow(c.Name, c.Center, c.Type, c.CrdName, c.Status, c.AppliesTo)
			}
			ioStreams.Info(table.String())
			return nil
		},
	}
	return cmd
}

// NewCapCenterListCommand List all capability centers
func NewCapCenterListCommand(ioStreams cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "ls",
		Short:   "List all capability centers",
		Long:    "List all configured capability centers",
		Example: `vela cap center ls`,
		RunE: func(cmd *cobra.Command, args []string) error {
			return listCapCenters(ioStreams)
		},
	}
	return cmd
}

// NewCapCenterRemoveCommand Remove specified capability center
func NewCapCenterRemoveCommand(ioStreams cmdutil.IOStreams) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "remove <centerName>",
		Short:   "Remove specified capability center",
		Long:    "Remove specified capability center",
		Example: "vela cap center remove mycenter",
		RunE: func(cmd *cobra.Command, args []string) error {
			return removeCapCenter(args, ioStreams)
		},
	}
	return cmd
}

func listCapCenters(ioStreams cmdutil.IOStreams) error {
	table := newUITable()
	table.MaxColWidth = 80
	table.AddRow("NAME", "ADDRESS")
	capabilityCenterList, err := common.ListCapabilityCenters()
	if err != nil {
		return err
	}
	for _, c := range capabilityCenterList {
		table.AddRow(c.Name, c.URL)
	}
	ioStreams.Info(table.String())
	return nil
}

func removeCapCenter(args []string, ioStreams cmdutil.IOStreams) error {
	if len(args) < 1 {
		return errors.New("you must specify <name> for capability center you want to remove")
	}
	centerName := args[0]
	msg, err := common.RemoveCapabilityCenter(centerName)
	if err == nil {
		ioStreams.Info(msg)
	}
	return err
}