/*
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License.  You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package cmd

import (
	"errors"
	"fmt"
	"strconv"
	"strings"

	"github.com/apache/camel-k/pkg/util"

	"github.com/operator-framework/operator-sdk/pkg/sdk"

	"github.com/apache/camel-k/pkg/apis/camel/v1alpha1"
	"github.com/apache/camel-k/pkg/util/kubernetes"

	"github.com/spf13/cobra"
	k8serrors "k8s.io/apimachinery/pkg/api/errors"
)

// NewCmdContext --
func newContextCreateCmd(rootCmdOptions *RootCmdOptions) *cobra.Command {
	impl := &contextCreateCommand{
		RootCmdOptions: rootCmdOptions,
	}

	cmd := cobra.Command{
		Use:   "create",
		Short: "Create an Integration Context",
		Long:  `Create an Integration Context.`,
		Args:  impl.validateArgs,
		RunE:  impl.run,
	}

	cmd.Flags().StringVarP(&impl.runtime, "runtime", "r", "jvm", "Runtime provided by the context")
	cmd.Flags().StringSliceVarP(&impl.dependencies, "dependency", "d", nil, "Add a dependency")
	cmd.Flags().StringSliceVarP(&impl.properties, "property", "p", nil, "Add a camel property")
	cmd.Flags().StringSliceVar(&impl.configmaps, "configmap", nil, "Add a ConfigMap")
	cmd.Flags().StringSliceVar(&impl.secrets, "secret", nil, "Add a Secret")
	cmd.Flags().StringSliceVar(&impl.Repositories, "repository", nil, "Add a maven repository")

	// completion support
	configureKnownCompletions(&cmd)

	return &cmd
}

type contextCreateCommand struct {
	*RootCmdOptions

	runtime      string
	dependencies []string
	properties   []string
	configmaps   []string
	secrets      []string
	Repositories []string
}

func (command *contextCreateCommand) validateArgs(cmd *cobra.Command, args []string) error {
	if len(args) != 1 {
		return errors.New("accepts 1 arg, received " + strconv.Itoa(len(args)))
	}

	return nil
}

func (command *contextCreateCommand) run(cmd *cobra.Command, args []string) error {
	ctx := v1alpha1.NewIntegrationContext(command.Namespace, args[0])
	if err := sdk.Get(&ctx); err == nil {
		// the integration context already exists, let's check that it is
		// not a platform one which is supposed to be "read only"

		if ctx.Labels["camel.apache.org/context.type"] == v1alpha1.IntegrationContextTypePlatform {
			fmt.Printf("integration context \"%s\" is not editable\n", ctx.Name)
			return nil
		}
	}

	ctx = v1alpha1.NewIntegrationContext(command.Namespace, kubernetes.SanitizeName(args[0]))
	ctx.Labels = map[string]string{
		"camel.apache.org/context.type": "user",
	}
	ctx.Spec = v1alpha1.IntegrationContextSpec{
		Dependencies:  make([]string, 0, len(command.dependencies)),
		Configuration: make([]v1alpha1.ConfigurationSpec, 0),
		Repositories:  command.Repositories,
	}

	for _, item := range command.dependencies {
		switch {
		case strings.HasPrefix(item, "mvn:"):
			ctx.Spec.Dependencies = append(ctx.Spec.Dependencies, item)
		case strings.HasPrefix(item, "file:"):
			ctx.Spec.Dependencies = append(ctx.Spec.Dependencies, item)
		case strings.HasPrefix(item, "camel-"):
			ctx.Spec.Dependencies = append(ctx.Spec.Dependencies, "camel:"+strings.TrimPrefix(item, "camel-"))
		}
	}

	// jvm runtime required by default
	util.StringSliceUniqueAdd(&ctx.Spec.Dependencies, "runtime:jvm")

	if command.runtime != "" {
		util.StringSliceUniqueAdd(&ctx.Spec.Dependencies, "runtime:"+command.runtime)
	}

	for _, item := range command.properties {
		ctx.Spec.Configuration = append(ctx.Spec.Configuration, v1alpha1.ConfigurationSpec{
			Type:  "property",
			Value: item,
		})
	}
	for _, item := range command.configmaps {
		ctx.Spec.Configuration = append(ctx.Spec.Configuration, v1alpha1.ConfigurationSpec{
			Type:  "configmap",
			Value: item,
		})
	}
	for _, item := range command.secrets {
		ctx.Spec.Configuration = append(ctx.Spec.Configuration, v1alpha1.ConfigurationSpec{
			Type:  "secret",
			Value: item,
		})
	}

	existed := false
	err := sdk.Create(&ctx)
	if err != nil && k8serrors.IsAlreadyExists(err) {
		existed = true
		clone := ctx.DeepCopy()
		err = sdk.Get(clone)
		if err != nil {
			fmt.Print(err.Error())
			return nil
		}
		ctx.ResourceVersion = clone.ResourceVersion
		err = sdk.Update(&ctx)
	}

	if err != nil {
		fmt.Print(err.Error())
		return nil
	}

	if !existed {
		fmt.Printf("integration context \"%s\" created\n", ctx.Name)
	} else {
		fmt.Printf("integration context \"%s\" updated\n", ctx.Name)
	}

	return nil
}