/**
 * 混剪命令
 * 处理一键混剪相关的后端逻辑
 */

use serde::{Deserialize, Serialize};
use tauri::{command, AppHandle};
use uuid::Uuid;

#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct MixEditConfig {
    pub duration: u32,
    pub style: String,
    pub music: bool,
    pub use_all_materials: bool,
    pub selected_material_ids: Vec<String>,
    pub use_all_models: bool,
    pub selected_model_ids: Vec<String>,
    pub transition_type: String,
    pub text_overlay: bool,
    pub logo_watermark: bool,
}

#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct VideoSegment {
    pub id: String,
    pub name: String,
    pub duration: Option<f64>,
    pub file_path: Option<String>,
}

#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct Model {
    pub id: String,
    pub name: String,
}

#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct MixEditParams {
    pub project_id: String,
    pub project_name: String,
    pub config: MixEditConfig,
    pub materials: Vec<VideoSegment>,
    pub models: Vec<Model>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct MixEditResult {
    pub success: bool,
    pub message: String,
    pub task_id: Option<String>,
    pub output_path: Option<String>,
    pub duration: Option<f64>,
    pub segment_count: Option<u32>,
    pub preview_url: Option<String>,
}

/// 开始混剪任务（简化版本）
#[command]
pub async fn start_mix_edit(_app: AppHandle, params: MixEditParams) -> Result<MixEditResult, String> {
    println!("Starting mix edit for project: {}", params.project_name);

    // 生成任务ID
    let task_id = Uuid::new_v4().to_string();

    // 验证参数
    if params.materials.is_empty() {
        return Ok(MixEditResult {
            success: false,
            message: "没有可用的素材".to_string(),
            task_id: None,
            output_path: None,
            duration: None,
            segment_count: None,
            preview_url: None,
        });
    }

    if params.config.duration == 0 {
        return Ok(MixEditResult {
            success: false,
            message: "目标时长必须大于0".to_string(),
            task_id: None,
            output_path: None,
            duration: None,
            segment_count: None,
            preview_url: None,
        });
    }

    // 模拟混剪处理
    println!("Processing {} materials with {} second duration",
             params.materials.len(), params.config.duration);

    // 模拟处理时间
    tokio::time::sleep(tokio::time::Duration::from_secs(2)).await;

    // 生成模拟输出路径
    let output_path = format!("output/mix_edit_{}_{}.mp4", params.project_id, task_id);

    Ok(MixEditResult {
        success: true,
        message: "混剪完成！".to_string(),
        task_id: Some(task_id.clone()),
        output_path: Some(output_path),
        duration: Some(params.config.duration as f64),
        segment_count: Some(params.materials.len() as u32),
        preview_url: Some(format!("preview/mix_edit_{}.jpg", task_id)),
    })
}
