// Copyright 2023 Greptime Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use axum::http::StatusCode;
use axum_test_helper::TestClient;
use common_error::status_code::StatusCode as ErrorCode;
use serde_json::json;
use servers::http::handler::HealthResponse;
use servers::http::{JsonOutput, JsonResponse};
use tests_integration::test_util::{
    setup_test_http_app, setup_test_http_app_with_frontend, setup_test_prom_app_with_frontend,
    StorageType,
};

#[macro_export]
macro_rules! http_test {
    ($service:ident, $($(#[$meta:meta])* $test:ident),*,) => {
        paste::item! {
            mod [<integration_http_ $service:lower _test>] {
                $(
                    #[tokio::test(flavor = "multi_thread")]
                    $(
                        #[$meta]
                    )*
                    async fn [< $test >]() {
                        let store_type = tests_integration::test_util::StorageType::$service;
                        if store_type.test_on() {
                            let _ = $crate::http::$test(store_type).await;
                        }
                    }
                )*
            }
        }
    };
}

#[macro_export]
macro_rules! http_tests {
     ($($service:ident),*) => {
        $(
            http_test!(
                $service,

                test_sql_api,
                test_prometheus_promql_api,
                test_prom_http_api,
                test_metrics_api,
                test_scripts_api,
                test_health_api,
                test_dashboard_path,
            );
        )*
    };
}

pub async fn test_sql_api(store_type: StorageType) {
    common_telemetry::init_default_ut_logging();
    let (app, mut guard) = setup_test_http_app_with_frontend(store_type, "sql_api").await;
    let client = TestClient::new(app);
    let res = client.get("/v1/sql").send().await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert_eq!(body.code(), 1004);
    assert_eq!(body.error().unwrap(), "sql parameter is required.");
    assert!(body.execution_time_ms().is_some());

    let res = client
        .get("/v1/sql?sql=select * from numbers limit 10")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());

    let output = body.output().unwrap();
    assert_eq!(output.len(), 1);
    assert_eq!(
        output[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records" :{"schema":{"column_schemas":[{"name":"number","data_type":"UInt32"}]},"rows":[[0],[1],[2],[3],[4],[5],[6],[7],[8],[9]]}
        })).unwrap()
    );

    // test insert and select
    let res = client
        .get("/v1/sql?sql=insert into demo values('host', 66.6, 1024, 0)")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    // select *
    let res = client
        .get("/v1/sql?sql=select * from demo limit 10")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());
    let output = body.output().unwrap();
    assert_eq!(output.len(), 1);

    assert_eq!(
        output[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"schema":{"column_schemas":[{"name":"host","data_type":"String"},{"name":"cpu","data_type":"Float64"},{"name":"memory","data_type":"Float64"},{"name":"ts","data_type":"TimestampMillisecond"}]},"rows":[["host",66.6,1024.0,0]]}
        })).unwrap()
    );

    // select with projections
    let res = client
        .get("/v1/sql?sql=select cpu, ts from demo limit 10")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());
    let output = body.output().unwrap();
    assert_eq!(output.len(), 1);

    assert_eq!(
        output[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"schema":{"column_schemas":[{"name":"cpu","data_type":"Float64"},{"name":"ts","data_type":"TimestampMillisecond"}]},"rows":[[66.6,0]]}
        })).unwrap()
    );

    // select with column alias
    let res = client
        .get("/v1/sql?sql=select cpu as c, ts as time from demo limit 10")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());
    let output = body.output().unwrap();
    assert_eq!(output.len(), 1);
    assert_eq!(
        output[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"schema":{"column_schemas":[{"name":"c","data_type":"Float64"},{"name":"time","data_type":"TimestampMillisecond"}]},"rows":[[66.6,0]]}
        })).unwrap()
    );

    // test multi-statement
    let res = client
        .get("/v1/sql?sql=select cpu, ts from demo limit 1;select cpu, ts from demo where ts > 0;")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());
    let outputs = body.output().unwrap();
    assert_eq!(outputs.len(), 2);
    assert_eq!(
        outputs[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"schema":{"column_schemas":[{"name":"cpu","data_type":"Float64"},{"name":"ts","data_type":"TimestampMillisecond"}]},"rows":[[66.6,0]]}
        })).unwrap()
    );
    assert_eq!(
        outputs[1],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"rows":[]}
        }))
        .unwrap()
    );

    // test multi-statement with error
    let res = client
        .get("/v1/sql?sql=select cpu, ts from demo limit 1;select cpu, ts from demo2 where ts > 0;")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(!body.success());
    assert!(body.execution_time_ms().is_some());
    assert!(body.error().unwrap().contains("Table not found"));

    // test database given
    let res = client
        .get("/v1/sql?db=public&sql=select cpu, ts from demo limit 1")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());
    let outputs = body.output().unwrap();
    assert_eq!(outputs.len(), 1);
    assert_eq!(
        outputs[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"schema":{"column_schemas":[{"name":"cpu","data_type":"Float64"},{"name":"ts","data_type":"TimestampMillisecond"}]},"rows":[[66.6,0]]}
        })).unwrap()
    );

    // test database not found
    let res = client
        .get("/v1/sql?db=notfound&sql=select cpu, ts from demo limit 1")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);
    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert_eq!(body.code(), ErrorCode::DatabaseNotFound as u32);

    // test catalog-schema given
    let res = client
        .get("/v1/sql?db=greptime-public&sql=select cpu, ts from demo limit 1")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());
    let outputs = body.output().unwrap();
    assert_eq!(outputs.len(), 1);
    assert_eq!(
        outputs[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"schema":{"column_schemas":[{"name":"cpu","data_type":"Float64"},{"name":"ts","data_type":"TimestampMillisecond"}]},"rows":[[66.6,0]]}
        })).unwrap()
    );

    // test invalid catalog
    let res = client
        .get("/v1/sql?db=notfound2-schema&sql=select cpu, ts from demo limit 1")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);
    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert_eq!(body.code(), ErrorCode::Internal as u32);

    // test invalid schema
    let res = client
        .get("/v1/sql?db=greptime-schema&sql=select cpu, ts from demo limit 1")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);
    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert_eq!(body.code(), ErrorCode::DatabaseNotFound as u32);

    guard.remove_all().await;
}

pub async fn test_prometheus_promql_api(store_type: StorageType) {
    common_telemetry::init_default_ut_logging();
    let (app, mut guard) = setup_test_http_app_with_frontend(store_type, "sql_api").await;
    let client = TestClient::new(app);

    let res = client
        .get("/v1/promql?query=abs(demo{host=\"Hangzhou\"})&start=0&end=100&step=5s")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert!(body.success());
    assert!(body.execution_time_ms().is_some());

    guard.remove_all().await;
}

pub async fn test_prom_http_api(store_type: StorageType) {
    common_telemetry::init_default_ut_logging();
    let (app, mut guard) = setup_test_prom_app_with_frontend(store_type, "promql_api").await;
    let client = TestClient::new(app);

    // instant query
    let res = client.get("/api/v1/query?query=up&time=1").send().await;
    assert_eq!(res.status(), StatusCode::OK);
    let res = client
        .post("/api/v1/query?query=up&time=1")
        .header("Content-Type", "application/x-www-form-urlencoded")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    // range query
    let res = client
        .get("/api/v1/query_range?query=up&start=1&end=100&step=5")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);
    let res = client
        .post("/api/v1/query_range?query=up&start=1&end=100&step=5")
        .header("Content-Type", "application/x-www-form-urlencoded")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    // labels
    let res = client.get("/api/v1/labels?match[]=up").send().await;
    assert_eq!(res.status(), StatusCode::OK);
    let res = client
        .post("/api/v1/labels?match[]=up")
        .header("Content-Type", "application/x-www-form-urlencoded")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);
    // labels query with multiple match[] params
    let res = client
        .get("/api/v1/labels?match[]=up&match[]=down")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);
    let res = client
        .post("/api/v1/labels?match[]=up&match[]=down")
        .header("Content-Type", "application/x-www-form-urlencoded")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    guard.remove_all().await;
}

pub async fn test_metrics_api(store_type: StorageType) {
    common_telemetry::init_default_ut_logging();
    common_telemetry::init_default_metrics_recorder();
    let (app, mut guard) = setup_test_http_app(store_type, "metrics_api").await;
    let client = TestClient::new(app);

    // Send a sql
    let res = client
        .get("/v1/sql?sql=select * from numbers limit 10")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    // Call metrics api
    let res = client.get("/metrics").send().await;
    assert_eq!(res.status(), StatusCode::OK);
    let body = res.text().await;
    assert!(body.contains("frontend_handle_sql_elapsed"));
    guard.remove_all().await;
}

pub async fn test_scripts_api(store_type: StorageType) {
    common_telemetry::init_default_ut_logging();
    let (app, mut guard) = setup_test_http_app_with_frontend(store_type, "script_api").await;
    let client = TestClient::new(app);

    let res = client
        .post("/v1/scripts?db=schema_test&name=test")
        .body(
            r#"
@copr(sql='select number from numbers limit 10', args=['number'], returns=['n'])
def test(n) -> vector[f64]:
    return n + 1;
"#,
        )
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);

    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();
    assert_eq!(body.code(), 0);
    assert!(body.output().is_none());

    // call script
    let res = client
        .post("/v1/run-script?db=schema_test&name=test")
        .send()
        .await;
    assert_eq!(res.status(), StatusCode::OK);
    let body = serde_json::from_str::<JsonResponse>(&res.text().await).unwrap();

    assert_eq!(body.code(), 0);
    assert!(body.execution_time_ms().is_some());
    let output = body.output().unwrap();
    assert_eq!(output.len(), 1);
    assert_eq!(
        output[0],
        serde_json::from_value::<JsonOutput>(json!({
            "records":{"schema":{"column_schemas":[{"name":"n","data_type":"Float64"}]},"rows":[[1.0],[2.0],[3.0],[4.0],[5.0],[6.0],[7.0],[8.0],[9.0],[10.0]]}
        })).unwrap()
    );

    guard.remove_all().await;
}

pub async fn test_health_api(store_type: StorageType) {
    common_telemetry::init_default_ut_logging();
    let (app, _guard) = setup_test_http_app_with_frontend(store_type, "health_api").await;
    let client = TestClient::new(app);

    // we can call health api with both `GET` and `POST` method.
    let res_post = client.post("/health").send().await;
    assert_eq!(res_post.status(), StatusCode::OK);
    let res_get = client.get("/health").send().await;
    assert_eq!(res_get.status(), StatusCode::OK);

    // both `GET` and `POST` method return same result
    let body_text = res_post.text().await;
    assert_eq!(body_text, res_get.text().await);

    // currently health api simply returns an empty json `{}`, which can be deserialized to an empty `HealthResponse`
    assert_eq!(body_text, "{}");

    let body = serde_json::from_str::<HealthResponse>(&body_text).unwrap();
    assert_eq!(body, HealthResponse {});
}

#[cfg(feature = "dashboard")]
pub async fn test_dashboard_path(store_type: StorageType) {
    common_telemetry::init_default_ut_logging();
    let (app, _guard) = setup_test_http_app_with_frontend(store_type, "dashboard_path").await;
    let client = TestClient::new(app);

    let res_post = client.post("/dashboard").send().await;
    assert_eq!(res_post.status(), StatusCode::OK);
    let res_get = client.get("/dashboard").send().await;
    assert_eq!(res_get.status(), StatusCode::OK);

    // both `GET` and `POST` method return same result
    let body_text = res_post.text().await;
    assert_eq!(body_text, res_get.text().await);
}

#[cfg(not(feature = "dashboard"))]
pub async fn test_dashboard_path(_: StorageType) {}