use serde_json::json;

use crate::common::{
    mock_worker::{HealthStatus, MockWorkerConfig, WorkerType},
    WorkerTestContext,
};

#[cfg(test)]
mod request_format_tests {
    use super::*;

    #[tokio::test]
    async fn test_generate_request_formats() {
        let ctx = WorkerTestContext::new(vec![MockWorkerConfig {
            port: 19001,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let payload = json!({
            "text": "Hello, world!",
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        let payload = json!({
            "text": "Tell me a story",
            "sampling_params": {
                "temperature": 0.7,
                "max_new_tokens": 100,
                "top_p": 0.9
            },
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        let payload = json!({
            "input_ids": [1, 2, 3, 4, 5],
            "sampling_params": {
                "temperature": 0.0,
                "max_new_tokens": 50
            },
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_v1_chat_completions_formats() {
        let ctx = WorkerTestContext::new(vec![MockWorkerConfig {
            port: 19002,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let payload = json!({
            "model": "test-model",
            "messages": [
                {"role": "system", "content": "You are a helpful assistant."},
                {"role": "user", "content": "Hello!"}
            ],
            "stream": false
        });

        let result = ctx.make_request("/v1/chat/completions", payload).await;
        assert!(result.is_ok());

        let response = result.unwrap();
        assert!(response.get("choices").is_some());
        assert!(response.get("id").is_some());
        assert_eq!(
            response.get("object").and_then(|v| v.as_str()),
            Some("chat.completion")
        );

        let payload = json!({
            "model": "test-model",
            "messages": [
                {"role": "user", "content": "Tell me a joke"}
            ],
            "temperature": 0.8,
            "max_tokens": 150,
            "top_p": 0.95,
            "stream": false
        });

        let result = ctx.make_request("/v1/chat/completions", payload).await;
        assert!(result.is_ok());

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_v1_completions_formats() {
        let ctx = WorkerTestContext::new(vec![MockWorkerConfig {
            port: 19003,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let payload = json!({
            "model": "test-model",
            "prompt": "Once upon a time",
            "max_tokens": 50,
            "stream": false
        });

        let result = ctx.make_request("/v1/completions", payload).await;
        assert!(result.is_ok());

        let response = result.unwrap();
        assert!(response.get("choices").is_some());
        assert_eq!(
            response.get("object").and_then(|v| v.as_str()),
            Some("text_completion")
        );

        let payload = json!({
            "model": "test-model",
            "prompt": ["First prompt", "Second prompt"],
            "temperature": 0.5,
            "stream": false
        });

        let result = ctx.make_request("/v1/completions", payload).await;
        assert!(result.is_ok());

        let payload = json!({
            "model": "test-model",
            "prompt": "The capital of France is",
            "max_tokens": 10,
            "logprobs": 5,
            "stream": false
        });

        let result = ctx.make_request("/v1/completions", payload).await;
        assert!(result.is_ok());

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_batch_requests() {
        let ctx = WorkerTestContext::new(vec![MockWorkerConfig {
            port: 19004,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let payload = json!({
            "text": ["First text", "Second text", "Third text"],
            "sampling_params": {
                "temperature": 0.7,
                "max_new_tokens": 50
            },
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        let payload = json!({
            "input_ids": [[1, 2, 3], [4, 5, 6], [7, 8, 9]],
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_special_parameters() {
        let ctx = WorkerTestContext::new(vec![MockWorkerConfig {
            port: 19005,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let payload = json!({
            "text": "Test",
            "return_logprob": true,
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        let payload = json!({
            "text": "Generate JSON",
            "sampling_params": {
                "temperature": 0.0,
                "json_schema": "$$ANY$$"
            },
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        let payload = json!({
            "text": "Continue forever",
            "sampling_params": {
                "temperature": 0.7,
                "max_new_tokens": 100,
                "ignore_eos": true
            },
            "stream": false
        });

        let result = ctx.make_request("/generate", payload).await;
        assert!(result.is_ok());

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_error_handling() {
        let ctx = WorkerTestContext::new(vec![MockWorkerConfig {
            port: 19006,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let payload = json!({});

        let result = ctx.make_request("/generate", payload).await;
        // Mock worker accepts empty body
        assert!(result.is_ok());

        ctx.shutdown().await;
    }
}