use std::net::SocketAddr;

use serde::Deserialize;

#[derive(Deserialize, Debug)]
pub struct Env {
    #[serde(default = "host_default")]
    pub host: String,
    #[serde(default = "port_default")]
    pub port: String,
    pub mysql_user: String,
    pub mysql_password: String,
    pub mysql_host: String,
    #[serde(default = "mysql_port_default")]
    pub mysql_port: String,
    #[serde(default = "mysql_database_default")]
    pub mysql_database: String,
    #[serde(default = "max_connections_default")]
    pub max_connections: u32,
    #[serde(default = "min_connections_default")]
    pub min_connections: u32,
    #[serde(default = "connect_timeout_default")]
    pub connect_timeout: u64,
    #[serde(default = "acquire_timeout_default")]
    pub acquire_timeout: u64,
    #[serde(default = "idle_timeout_default")]
    pub idle_timeout: u64,
    #[serde(default = "max_lifetime_default")]
    pub max_lifetime: u64,
    #[serde(default = "sqlx_logging_default")]
    pub sqlx_logging: bool,
    #[serde(default = "amf_informations_req")]
    pub amf_informations_req: String,
    #[serde(default = "amf_documents_path")]
    pub amf_documents_path: String,
    #[serde(default = "get_amf_transaction_interval")]
    pub get_amf_transaction_interval: u64,
}

fn host_default() -> String {
    "127.0.0.1".to_string()
}

fn port_default() -> String {
    "8000".to_string()
}

fn mysql_port_default() -> String {
    "3306".to_string()
}

fn mysql_database_default() -> String {
    "fast-insiders".to_string()
}

fn max_connections_default() -> u32 {
    100
}

fn min_connections_default() -> u32 {
    5
}

fn connect_timeout_default() -> u64 {
    8
}

fn acquire_timeout_default() -> u64 {
    8
}

fn idle_timeout_default() -> u64 {
    8
}

fn max_lifetime_default() -> u64 {
    8
}

fn sqlx_logging_default() -> bool {
    false
}

fn amf_documents_path() -> String {
    "https://bdif.amf-france.org/back/api/v1/documents/".to_string()
}

fn amf_informations_req() -> String {
    "https://bdif.amf-france.org/back/api/v1/informations?rechercheTexte=&typesInformation={{inf_type}}&from={{from}}&size={{size}}".to_string()
}

fn get_amf_transaction_interval() -> u64 {
    3600
}

impl Env {
    fn new() -> Self {
        if cfg!(debug_assertions) {
            // A .env file will only be loaded in a dev or debug environment
            dotenvy::dotenv().expect("Failed to load .env file");
        }

        envy::from_env::<Env>().expect("Failed to load env")
    }
}

#[derive(Debug)]
pub struct Config {
    pub server_address: SocketAddr,
    pub database_url: String,
    pub max_connections: u32,
    pub min_connections: u32,
    pub connect_timeout: u64,
    pub acquire_timeout: u64,
    pub idle_timeout: u64,
    pub max_lifetime: u64,
    pub sqlx_logging: bool,
    pub amf_informations_req: String,
    pub amf_documents_path: String,
    pub get_amf_transaction_interval: u64,
}

impl Config {
    pub fn new() -> Self {
        let env = Env::new();
        let database_url = format!(
            "mysql://{}:{}@{}:{}/{}",
            env.mysql_user, env.mysql_password, env.mysql_host, env.mysql_port, env.mysql_database
        );

        let server_address = format!("{}:{}", env.host, env.port)
            .parse()
            .expect("Could not parse host and port combination into a valid server address");

        let mut config = Config {
            server_address,
            database_url,
            max_connections: env.max_connections,
            min_connections: env.min_connections,
            connect_timeout: env.connect_timeout,
            acquire_timeout: env.acquire_timeout,
            idle_timeout: env.idle_timeout,
            max_lifetime: env.max_lifetime,
            sqlx_logging: env.sqlx_logging,
            amf_informations_req: env.amf_informations_req,
            amf_documents_path: env.amf_documents_path,
            get_amf_transaction_interval: env.get_amf_transaction_interval,
        };

        if config.amf_documents_path.chars().last().unwrap_or('/') != '/' {
            config.amf_documents_path.push('/');
        }

        config
    }
}