use assert_fs::prelude::*;
use predicates::prelude::*;
use rstest::*;
use serde_json::json;
use test_log::test;

use crate::common::fixtures::*;

const FILE_CONTENTS: &str = r#"
some text
on multiple lines
that is a file's contents
"#;

#[rstest]
#[test(tokio::test)]
async fn should_support_json_copying_file(mut api_process: CtxCommand<ApiProcess>) {
    validate_authentication(&mut api_process).await;

    let temp = assert_fs::TempDir::new().unwrap();

    let src = temp.child("file");
    src.write_str(FILE_CONTENTS).unwrap();

    let dst = temp.child("file2");

    let id = rand::random::<u64>().to_string();
    let req = json!({
        "id": id,
        "payload": {
            "type": "copy",
            "src": src.to_path_buf(),
            "dst": dst.to_path_buf(),
        },
    });

    let res = api_process.write_and_read_json(req).await.unwrap().unwrap();

    assert_eq!(res["origin_id"], id, "JSON: {res}");
    assert_eq!(
        res["payload"],
        json!({
            "type": "ok"
        }),
        "JSON: {res}"
    );

    src.assert(predicate::path::exists());
    dst.assert(predicate::path::eq_file(src.path()));
}

#[rstest]
#[test(tokio::test)]
async fn should_support_json_copying_nonempty_directory(mut api_process: CtxCommand<ApiProcess>) {
    validate_authentication(&mut api_process).await;

    let temp = assert_fs::TempDir::new().unwrap();

    // Make a non-empty directory
    let src = temp.child("dir");
    src.create_dir_all().unwrap();
    let src_file = src.child("file");
    src_file.write_str(FILE_CONTENTS).unwrap();

    let dst = temp.child("dir2");
    let dst_file = dst.child("file");

    let id = rand::random::<u64>().to_string();
    let req = json!({
        "id": id,
        "payload": {
            "type": "copy",
            "src": src.to_path_buf(),
            "dst": dst.to_path_buf(),
        },
    });

    let res = api_process.write_and_read_json(req).await.unwrap().unwrap();

    assert_eq!(res["origin_id"], id, "JSON: {res}");
    assert_eq!(
        res["payload"],
        json!({
            "type": "ok"
        }),
        "JSON: {res}"
    );

    src_file.assert(predicate::path::exists());
    dst_file.assert(predicate::path::eq_file(src_file.path()));
}

#[rstest]
#[test(tokio::test)]
async fn should_support_json_output_for_error(mut api_process: CtxCommand<ApiProcess>) {
    validate_authentication(&mut api_process).await;

    let temp = assert_fs::TempDir::new().unwrap();

    let src = temp.child("dir");
    let dst = temp.child("dir2");

    let id = rand::random::<u64>().to_string();
    let req = json!({
        "id": id,
        "payload": {
            "type": "copy",
            "src": src.to_path_buf(),
            "dst": dst.to_path_buf(),
        },
    });

    let res = api_process.write_and_read_json(req).await.unwrap().unwrap();

    assert_eq!(res["origin_id"], id, "JSON: {res}");
    assert_eq!(res["payload"]["type"], "error", "JSON: {res}");
    assert_eq!(res["payload"]["kind"], "not_found", "JSON: {res}");

    src.assert(predicate::path::missing());
    dst.assert(predicate::path::missing());
}