use chrono::NaiveDateTime;
use serde::Deserialize;

#[derive(Deserialize)]
pub struct DeparturesMerklingen {
    #[serde(rename = "entries")]
    pub entries: Vec<DeparturesMerklingen1>,
}
#[derive(Deserialize)]
pub struct DeparturesMerklingen1 {
    #[serde(rename = "zeit")]
    pub time_schedule: Option<NaiveDateTime>,
    #[serde(rename = "ezZeit")]
    pub time_delayed: Option<NaiveDateTime>,
    #[serde(rename = "ezGleis")]
    pub platform: Option<String>,
    #[serde(rename = "gleis")]
    pub platform_schedule: Option<String>,
    // TODO: find this in api if it exists
    #[serde(rename = "canceled")]
    pub canceled: Option<bool>,
    #[serde(rename = "verkehrmittel")]
    pub line_name: Option<DeparturesMerklingen4>,
    // TODO: find this in api if it exists
    #[serde(rename = "stopPlace")]
    pub stop_place: Option<DeparturesMerklingen2>,
    #[serde(rename = "terminus")]
    pub destination: Option<String>,
    #[serde(rename = "meldungen")]
    pub messages: Option<Vec<DeparturesMerklingen3>>,
}
#[derive(Deserialize)]
pub struct DeparturesMerklingen4 {
    #[serde(rename = "linienNummer")]
    pub line_number: Option<String>,
    #[serde(rename = "kurzText")]
    pub product: Option<String>,
}
#[derive(Deserialize)]
pub struct DeparturesMerklingen2 {
    #[serde(rename = "name")]
    pub name: Option<String>,
    #[serde(rename = "canceled")]
    pub canceled: Option<bool>,
}
#[derive(Deserialize)]
pub struct DeparturesMerklingen3 {
    #[serde(rename = "text")]
    pub text: Option<String>,
    #[serde(rename = "prioritaet")]
    pub priority: Option<String>,
}

pub async fn departures_merklingen() -> Result<DeparturesMerklingen, String> {
    let url = r#"https://www.bahn.de/web/api/reiseloesung/abfahrten?ortExtId=8003983&mitVias=true&maxVias=8&verkehrsmittel[]=ICE&verkehrsmittel[]=EC_IC&verkehrsmittel[]=IR&verkehrsmittel[]=REGIONAL&verkehrsmittel[]=SBAHN"#;
    match reqwest::get(url).await {
        Ok(response) => match response.text().await {
            Ok(response) => match serde_json::from_str::<DeparturesMerklingen>(&response) {
                Ok(response) => Ok(response),
                Err(e) => Err(format!(
                    "Couldn't parse HTTP response from URL {url:?}: {e}\nResponse was (raw):\n{response}"
                ))?,
            },
            Err(e) => Err(format!("Couldn't get HTTP response from URL {url:?}: {e}"))?,
        },
        Err(e) => Err(format!("Couldn't make GET request to URL {url:?}: {e}"))?,
    }
}