package main

import (
	"fmt"
	"slices"

	"github.com/andreykaipov/goobs/api/requests/scenes"
)

// SceneCmd provides commands to manage scenes in OBS Studio.
type SceneCmd struct {
	List    SceneListCmd    `cmd:"" help:"List all scenes."       aliases:"ls"`
	Current SceneCurrentCmd `cmd:"" help:"Get the current scene." aliases:"c"`
	Switch  SceneSwitchCmd  `cmd:"" help:"Switch to a scene."     aliases:"sw"`
}

// SceneListCmd provides a command to list all scenes.
type SceneListCmd struct{} // size = 0x0

// Run executes the command to list all scenes.
func (cmd *SceneListCmd) Run(ctx *context) error {
	scenes, err := ctx.Client.Scenes.GetSceneList()
	if err != nil {
		return err
	}

	slices.Reverse(scenes.Scenes)
	for _, scene := range scenes.Scenes {
		fmt.Fprintln(ctx.Out, scene.SceneName)
	}
	return nil
}

// SceneCurrentCmd provides a command to get the current scene.
type SceneCurrentCmd struct {
	Preview bool `flag:"" help:"Preview scene."`
}

// Run executes the command to get the current scene.
func (cmd *SceneCurrentCmd) Run(ctx *context) error {
	if cmd.Preview {
		scene, err := ctx.Client.Scenes.GetCurrentPreviewScene()
		if err != nil {
			return err
		}
		fmt.Fprintln(ctx.Out, scene.SceneName)
	} else {
		scene, err := ctx.Client.Scenes.GetCurrentProgramScene()
		if err != nil {
			return err
		}
		fmt.Fprintln(ctx.Out, scene.SceneName)
	}
	return nil
}

// SceneSwitchCmd provides a command to switch to a different scene.
type SceneSwitchCmd struct {
	Preview  bool   `flag:"" help:"Preview scene."`
	NewScene string `        help:"Scene name to switch to." arg:""`
}

// Run executes the command to switch to a different scene.
func (cmd *SceneSwitchCmd) Run(ctx *context) error {
	if cmd.Preview {
		_, err := ctx.Client.Scenes.SetCurrentPreviewScene(scenes.NewSetCurrentPreviewSceneParams().
			WithSceneName(cmd.NewScene))
		if err != nil {
			return err
		}

		fmt.Fprintln(ctx.Out, "Switched to preview scene:", cmd.NewScene)
	} else {
		_, err := ctx.Client.Scenes.SetCurrentProgramScene(scenes.NewSetCurrentProgramSceneParams().
			WithSceneName(cmd.NewScene))
		if err != nil {
			return err
		}

		fmt.Fprintln(ctx.Out, "Switched to program scene:", cmd.NewScene)
	}
	return nil
}