/*
Copyright 2023 The K8sGPT Authors.
Licensed 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 auth

import (
	"os"
	"strings"

	"github.com/fatih/color"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
)

var updateCmd = &cobra.Command{
	Use:   "update",
	Short: "Update a backend provider",
	Long:  "The command to update an AI backend provider",
	// Args:  cobra.ExactArgs(1),
	PreRun: func(cmd *cobra.Command, args []string) {
		_ = cmd.MarkFlagRequired("backend")
		backend, _ := cmd.Flags().GetString("backend")
		if strings.ToLower(backend) == "azureopenai" {
			_ = cmd.MarkFlagRequired("engine")
			_ = cmd.MarkFlagRequired("baseurl")
		}
		organizationId, _ := cmd.Flags().GetString("organizationId")
		if strings.ToLower(backend) != "azureopenai" && strings.ToLower(backend) != "openai" {
			if organizationId != "" {
				color.Red("Error: organizationId must be empty for backends other than azureopenai or openai.")
				os.Exit(1)
			}
		}
	},
	Run: func(cmd *cobra.Command, args []string) {

		// get ai configuration
		err := viper.UnmarshalKey("ai", &configAI)
		if err != nil {
			color.Red("Error: %v", err)
			os.Exit(1)
		}

		backend, _ := cmd.Flags().GetString("backend")

		if temperature > 1.0 || temperature < 0.0 {
			color.Red("Error: temperature ranges from 0 to 1.")
			os.Exit(1)
		}

		foundBackend := false
		for i, provider := range configAI.Providers {
			if backend == provider.Name {
				foundBackend = true
				if backend != "" {
					configAI.Providers[i].Name = backend
					color.Blue("Backend name updated successfully")
				}
				if model != "" {
					configAI.Providers[i].Model = model
					color.Blue("Model updated successfully")
				}
				if password != "" {
					configAI.Providers[i].Password = password
					color.Blue("Password updated successfully")
				}
				if baseURL != "" {
					configAI.Providers[i].BaseURL = baseURL
					color.Blue("Base URL updated successfully")
				}
				if engine != "" {
					configAI.Providers[i].Engine = engine
				}
				if organizationId != "" {
					configAI.Providers[i].OrganizationId = organizationId
					color.Blue("Organization Id updated successfully")
				}
				configAI.Providers[i].Temperature = temperature
				color.Green("%s updated in the AI backend provider list", backend)
			}
		}
		if !foundBackend {
			color.Red("Error: %s does not exist in configuration file. Please use k8sgpt auth new.", args[0])
			os.Exit(1)
		}

		viper.Set("ai", configAI)
		if err := viper.WriteConfig(); err != nil {
			color.Red("Error writing config file: %s", err.Error())
			os.Exit(1)
		}
	},
}

func init() {
	// update flag for backend
	updateCmd.Flags().StringVarP(&backend, "backend", "b", "", "Update backend AI provider")
	// update flag for model
	updateCmd.Flags().StringVarP(&model, "model", "m", "", "Update backend AI model")
	// update flag for password
	updateCmd.Flags().StringVarP(&password, "password", "p", "", "Update backend AI password")
	// update flag for url
	updateCmd.Flags().StringVarP(&baseURL, "baseurl", "u", "", "Update URL AI provider, (e.g `http://localhost:8080/v1`)")
	// add flag for temperature
	updateCmd.Flags().Float32VarP(&temperature, "temperature", "t", 0.7, "The sampling temperature, value ranges between 0 ( output be more deterministic) and 1 (more random)")
	// update flag for azure open ai engine/deployment name
	updateCmd.Flags().StringVarP(&engine, "engine", "e", "", "Update Azure AI deployment name")
	// update flag for organizationId
	updateCmd.Flags().StringVarP(&organizationId, "organizationId", "o", "", "Update OpenAI or Azure organization Id")
}