package executor

import (
	"fmt"

	"codeflow.dananglin.me.uk/apollo/enbas/internal/config"
	"codeflow.dananglin.me.uk/apollo/enbas/internal/printer"
)

func Execute(
	command string,
	args []string,
	noColor bool,
	configDir string,
) error {
	var (
		enbasConfig  *config.Config
		enbasPrinter *printer.Printer
		err          error
	)

	switch command {
	case commandInit, commandVersion:
		enbasPrinter = printer.NewPrinter(noColor, "", 0)
	default:
		enbasConfig, err = config.NewConfigFromFile(configDir)
		if err != nil {
			enbasPrinter = printer.NewPrinter(noColor, "", 0)
			enbasPrinter.PrintFailure("unable to load the configuration: " + err.Error() + ".")

			return err
		}

		enbasPrinter = printer.NewPrinter(
			noColor,
			enbasConfig.Integrations.Pager,
			enbasConfig.LineWrapMaxWidth,
		)
	}

	if err = execute(
		command,
		args,
		enbasPrinter,
		enbasConfig,
		configDir,
	); err != nil {
		enbasPrinter.PrintFailure("(" + command + ") " + err.Error() + ".")

		return err
	}

	return nil
}

func execute(
	command string,
	args []string,
	enbasPrinter *printer.Printer,
	enbasConfig *config.Config,
	configDir string,
) error {
	executorMap := map[string]Executor{
		commandAccept: NewAcceptExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandAdd: NewAddExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandBlock: NewBlockExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandCreate: NewCreateExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandDelete: NewDeleteExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandEdit: NewEditExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandFollow: NewFollowExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandInit: NewInitExecutor(
			enbasPrinter,
			configDir,
		),
		commandLogin: NewLoginExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandMute: NewMuteExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandReject: NewRejectExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandRemove: NewRemoveExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandSwitch: NewSwitchExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandUnfollow: NewUnfollowExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandUnmute: NewUnmuteExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandUnblock: NewUnblockExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandShow: NewShowExecutor(
			enbasPrinter,
			enbasConfig,
		),
		commandVersion: NewVersionExecutor(
			enbasPrinter,
		),
		commandWhoami: NewWhoamiExecutor(
			enbasPrinter,
			enbasConfig,
		),
	}

	exe, ok := executorMap[command]
	if !ok {
		return UnknownCommandError{Command: command}
	}

	if err := exe.Parse(args); err != nil {
		return fmt.Errorf("flag parsing error: %w", err)
	}

	if err := exe.Execute(); err != nil {
		return fmt.Errorf("execution error: %w", err)
	}

	return nil
}