package internal

import (
	"fmt"
	"path"

	"coopcloud.tech/abra/pkg/app"
	"coopcloud.tech/abra/pkg/config"
	"coopcloud.tech/abra/pkg/formatter"
	"coopcloud.tech/abra/pkg/recipe"
	recipePkg "coopcloud.tech/abra/pkg/recipe"
	"coopcloud.tech/abra/pkg/secret"
	"coopcloud.tech/abra/pkg/ssh"
	"github.com/AlecAivazis/survey/v2"
	"github.com/olekukonko/tablewriter"
	"github.com/sirupsen/logrus"
	"github.com/urfave/cli"
)

// AppSecrets represents all app secrest
type AppSecrets map[string]string

// RecipeName is used for configuring recipe name programmatically
var RecipeName string

// createSecrets creates all secrets for a new app.
func createSecrets(sanitisedAppName string) (AppSecrets, error) {
	appEnvPath := path.Join(config.ABRA_DIR, "servers", NewAppServer, fmt.Sprintf("%s.env", Domain))
	appEnv, err := config.ReadEnv(appEnvPath)
	if err != nil {
		return nil, err
	}

	secretEnvVars := secret.ReadSecretEnvVars(appEnv)
	secrets, err := secret.GenerateSecrets(secretEnvVars, sanitisedAppName, NewAppServer)
	if err != nil {
		return nil, err
	}

	if Pass {
		for secretName := range secrets {
			secretValue := secrets[secretName]
			if err := secret.PassInsertSecret(secretValue, secretName, Domain, NewAppServer); err != nil {
				return nil, err
			}
		}
	}
	return secrets, nil
}

// ensureDomainFlag checks if the domain flag was used. if not, asks the user for it/
func ensureDomainFlag(recipe recipe.Recipe, server string) error {
	if Domain == "" && !NoInput {
		prompt := &survey.Input{
			Message: "Specify app domain",
			Default: fmt.Sprintf("%s.%s", recipe.Name, server),
		}
		if err := survey.AskOne(prompt, &Domain); err != nil {
			return err
		}
	}

	if Domain == "" {
		return fmt.Errorf("no domain provided")
	}

	return nil
}

// promptForSecrets asks if we should generate secrets for a new app.
func promptForSecrets(appName string) error {
	app, err := app.Get(appName)
	if err != nil {
		return err
	}

	secretEnvVars := secret.ReadSecretEnvVars(app.Env)
	if len(secretEnvVars) == 0 {
		logrus.Debugf("%s has no secrets to generate, skipping...", app.Recipe)
		return nil
	}

	if !Secrets && !NoInput {
		prompt := &survey.Confirm{
			Message: "Generate app secrets?",
		}
		if err := survey.AskOne(prompt, &Secrets); err != nil {
			return err
		}
	}

	return nil
}

// ensureServerFlag checks if the server flag was used. if not, asks the user for it.
func ensureServerFlag() error {
	servers, err := config.GetServers()
	if err != nil {
		return err
	}

	if NewAppServer == "" && !NoInput {
		prompt := &survey.Select{
			Message: "Select app server:",
			Options: servers,
		}
		if err := survey.AskOne(prompt, &NewAppServer); err != nil {
			return err
		}
	}

	if NewAppServer == "" {
		return fmt.Errorf("no server provided")
	}

	return nil
}

// NewAction is the new app creation logic
func NewAction(c *cli.Context) error {
	recipe := ValidateRecipeWithPrompt(c, false)

	if err := recipePkg.EnsureUpToDate(recipe.Name); err != nil {
		logrus.Fatal(err)
	}

	if err := ensureServerFlag(); err != nil {
		logrus.Fatal(err)
	}

	if err := ensureDomainFlag(recipe, NewAppServer); err != nil {
		logrus.Fatal(err)
	}

	if err := promptForSecrets(Domain); err != nil {
		logrus.Fatal(err)
	}

	sanitisedAppName := config.SanitiseAppName(Domain)
	logrus.Debugf("%s sanitised as %s for new app", Domain, sanitisedAppName)

	if err := config.TemplateAppEnvSample(recipe.Name, Domain, NewAppServer, Domain); err != nil {
		logrus.Fatal(err)
	}

	var secrets AppSecrets
	var secretTable *tablewriter.Table
	if Secrets {
		if err := ssh.EnsureHostKey(NewAppServer); err != nil {
			logrus.Fatal(err)
		}

		var err error
		secrets, err = createSecrets(sanitisedAppName)
		if err != nil {
			logrus.Fatal(err)
		}

		secretCols := []string{"Name", "Value"}
		secretTable = formatter.CreateTable(secretCols)
		for secret := range secrets {
			secretTable.Append([]string{secret, secrets[secret]})
		}

	}

	if NewAppServer == "default" {
		NewAppServer = "local"
	}

	tableCol := []string{"server", "recipe", "domain"}
	table := formatter.CreateTable(tableCol)
	table.Append([]string{NewAppServer, recipe.Name, Domain})

	fmt.Println("")
	fmt.Println(fmt.Sprintf("A new %s app has been created! Here is an overview:", recipe.Name))
	fmt.Println("")
	table.Render()
	fmt.Println("")
	fmt.Println("You can configure this app by running the following:")
	fmt.Println(fmt.Sprintf("\n    abra app config %s", Domain))
	fmt.Println("")
	fmt.Println("You can deploy this app by running the following:")
	fmt.Println(fmt.Sprintf("\n    abra app deploy %s", Domain))
	fmt.Println("")

	if len(secrets) > 0 {
		fmt.Println("Here are your generated secrets:")
		fmt.Println("")
		secretTable.Render()
		fmt.Println("")
		logrus.Warn("generated secrets are not shown again, please take note of them *now*")
	}

	return nil
}