#[macro_use]
extern crate rocket;
use libsig;
use serde::{Serialize, Deserialize};
use rocket::serde::json::Json;
use serde_json::{json, Value};

#[get("/api")]
fn api_version_available() -> Json<Value> {
    Json(json! ({
        "versions": [ "v1" ]
    }))
}

#[get("/api/v1")]
fn api_v1_index() -> Json<Value> {
    Json(json! ({
        "endpoints": [ "generate", "generate_ambient" ]
    }))
}

#[derive(Debug, Serialize, Deserialize)]
struct Output {
    data: libsig::SongIdea,
    text: String,
}

#[get("/api/v1/generate")]
fn generate() -> Json<Output> {
    let idea = libsig::SongIdea::generate();
    Json(Output {
        data: idea.clone(),
        text: idea.to_string()
    })
}

#[get("/api/v1/generate_ambient")]
fn generate_ambient() -> Json<Output> {
    let idea = libsig::SongIdea::generate_ambient();
    Json(Output {
        data: idea.clone(),
        text: idea.to_string()
    })
}

#[launch]
fn rocket() -> _ {
    rocket::build().mount("/", routes![api_version_available, api_v1_index, generate, generate_ambient])
}