use std::{pin::pin, time::Instant};

use aha::models::{GenerateModel, qwen3vl::generate::Qwen3VLGenerateModel};
use aha::params::chat::ChatCompletionParameters;
use anyhow::Result;
use rocket::futures::StreamExt;

#[test]
fn qwen3vl_thinking_generate() -> Result<()> {
    // test with cuda: RUST_BACKTRACE=1 cargo test -F cuda qwen3vl_thinking_generate -r -- --nocapture

    let save_dir =
        aha::utils::get_default_save_dir().ok_or(anyhow::anyhow!("Failed to get save dir"))?;
    let model_path = format!("{}/Qwen/Qwen3-VL-2B-Thinking/", save_dir);

    let message = r#"
    {
        "model": "qwen3vl-thinking",
        "messages": [
            {
                "role": "user",
                "content": [ 
                    {
                        "type": "image",
                        "image_url": 
                        {
                            "url": "file://./assets/img/ocr_test1.png"
                        }
                    },             
                    {
                        "type": "text", 
                        "text": "OCR"
                    }
                ]
            }
        ],
        "max_tokens": 10240
    }
    "#;
    let mes: ChatCompletionParameters = serde_json::from_str(message)?;
    let i_start = Instant::now();
    let mut qwen3vl = Qwen3VLGenerateModel::init(&model_path, None, None)?;
    let i_duration = i_start.elapsed();
    println!("Time elapsed in load model is: {:?}", i_duration);

    let i_start = Instant::now();
    let res = qwen3vl.generate(mes)?;
    let i_duration = i_start.elapsed();
    println!("generate: \n {:?}", res);
    if let Some(usage) = &res.usage {
        let num_token = usage.total_tokens;
        let duration_secs = i_duration.as_secs_f64();
        let tps = num_token as f64 / duration_secs;
        println!("Tokens per second (TPS): {:.2}", tps);
    }
    println!("Time elapsed in generate is: {:?}", i_duration);
    Ok(())
}

#[test]
fn qwen3vl_generate() -> Result<()> {
    // test with cuda: RUST_BACKTRACE=1 cargo test -F cuda --test test_qwen3vl qwen3vl_generate -r -- --nocapture

    let save_dir =
        aha::utils::get_default_save_dir().ok_or(anyhow::anyhow!("Failed to get save dir"))?;
    let model_path = format!("{}/Qwen/Qwen3-VL-2B-Instruct/", save_dir);

    let message = r#"
    {
        "model": "qwen3vl",
        "messages": [
            {
                "role": "user",
                "content": [
                    {
                        "type": "image",
                        "image_url": 
                        {
                            "url": "file://./assets/img/ocr_test1.png"
                        }
                    },             
                    {
                        "type": "text", 
                        "text": "OCR"
                    }
                ]
            }
        ]
    }
    "#;
    let mes: ChatCompletionParameters = serde_json::from_str(message)?;
    let i_start = Instant::now();
    let mut qwen3vl = Qwen3VLGenerateModel::init(&model_path, None, None)?;
    let i_duration = i_start.elapsed();
    println!("Time elapsed in load model is: {:?}", i_duration);

    let res = qwen3vl.generate(mes)?;
    println!("generate: \n {:?}", res);
    if let Some(usage) = &res.usage {
        println!("usage: \n {:?}", usage);
    }
    Ok(())
}

#[tokio::test]
async fn qwen3vl_stream() -> Result<()> {
    // test with cuda: RUST_BACKTRACE=1 cargo test -F cuda,ffmpeg qwen3vl_stream -r -- --nocapture

    let save_dir =
        aha::utils::get_default_save_dir().ok_or(anyhow::anyhow!("Failed to get save dir"))?;
    let model_path = format!("{}/Qwen/Qwen3-VL-2B-Instruct/", save_dir);

    let message = r#"
    {
        "model": "qwen3vl",
        "messages": [
            {
                "role": "user",
                "content": [
                    {
                        "type": "video",
                        "video_url": 
                        {
                            "url": "./assets/video/video_test.mp4"
                        }
                    },              
                    {
                        "type": "text", 
                        "text": "视频中发生了什么？"
                    }
                ]
            }
        ]
    }
    "#;
    let mes: ChatCompletionParameters = serde_json::from_str(message)?;
    let i_start = Instant::now();
    let mut qwen3vl = Qwen3VLGenerateModel::init(&model_path, None, None)?;
    let i_duration = i_start.elapsed();
    println!("Time elapsed in load model is: {:?}", i_duration);

    let i_start = Instant::now();
    let mut stream = pin!(qwen3vl.generate_stream(mes)?);
    while let Some(item) = stream.next().await {
        println!("generate: \n {:?}", item);
    }
    let i_duration = i_start.elapsed();
    println!("Time elapsed in generate is: {:?}", i_duration);
    Ok(())
}