use anyhow::{anyhow, Result};
pub use google_walletobjects1::api::*;

use crate::resolution792::BoardingPass;
use crate::static_data::AIRLINE_DATA;

pub fn passes_from_barcode(
    issuer_id: &str,
    boarding_pass: BoardingPass,
) -> Result<(Vec<FlightClass>, Vec<FlightObject>)> {
    if boarding_pass.legs.len() > 1 {
        return Err(anyhow!("multi-leg trips aren't supported yet"));
    }
    let leg = &boarding_pass.legs[0];
    let airline_data = AIRLINE_DATA.get(&leg.operating_carrier).ok_or_else(|| {
        anyhow!(
            "no AIRLINE_DATA has been provided for {} yet",
            leg.operating_carrier
        )
    })?;

    let frequent_flyer_program_data = if leg.frequent_flyer_airline.is_none() {
        None
    } else {
        AIRLINE_DATA.get(&leg.frequent_flyer_airline.as_ref().unwrap())
    };

    let id_prefix = format!(
        "{}.{}{}-{}-{}{}",
        issuer_id,
        leg.operating_carrier,
        leg.flight_number,
        leg.date_of_flight,
        leg.origin_airport,
        leg.destination_airport
    );
    let class_id = &id_prefix;
    let pass_id = format!("{}-{}", &id_prefix, leg.check_in_sequence);

    let class = FlightClass {
        id: Some(class_id.clone()),
        issuer_name: Some(airline_data.name.to_string()),
        hex_background_color: Some(airline_data.boarding_pass_background_colour.to_string()),
        review_status: Some("UNDER_REVIEW".to_string()),
        boarding_and_seating_policy: Some(BoardingAndSeatingPolicy {
            boarding_policy: Some(airline_data.boarding_policy.to_string()),
            seat_class_policy: Some(airline_data.seat_class_policy.to_string()),
            ..Default::default()
        }),
        origin: Some(AirportInfo {
            airport_iata_code: Some(leg.origin_airport.clone()),
            ..Default::default()
        }),
        destination: Some(AirportInfo {
            airport_iata_code: Some(leg.destination_airport.clone()),
            ..Default::default()
        }),
        flight_header: Some(FlightHeader {
            carrier: Some(FlightCarrier {
                airline_alliance_logo: airline_data.alliance_logo_url.map(url_to_image),
                airline_logo: Some(url_to_image(airline_data.logo_url)),
                airline_name: Some(localized_string("en-GB", airline_data.name)),
                carrier_iata_code: Some(leg.operating_carrier.to_string()),
                ..Default::default()
            }),
            flight_number: Some(leg.flight_number.to_string()),
            ..Default::default()
        }),
        ..Default::default()
    };

    let pass_barcode = String::from_utf8(boarding_pass.initial_data)?;

    let eticket_number =
        if leg.airline_numeric_code.is_some() && leg.document_serial_number.is_some() {
            Some(format!(
                "{}-{}",
                leg.airline_numeric_code.as_ref().unwrap(),
                leg.document_serial_number.as_ref().unwrap()
            ))
        } else {
            Some("125-2150000000".to_string())
        };

    let pass = FlightObject {
        id: Some(pass_id),
        class_id: Some(class_id.clone()),
        state: Some("ACTIVE".to_string()),

        passenger_name: Some(boarding_pass.passenger_name.clone()),
        reservation_info: Some(ReservationInfo {
            confirmation_code: Some(leg.operating_carrier_pnr.clone()),
            eticket_number,
            frequent_flyer_info: if frequent_flyer_program_data.is_none() {
                None
            } else {
                Some(FrequentFlyerInfo {
                    frequent_flyer_program_name: frequent_flyer_program_data
                        .unwrap().frequent_flyer_program_name
                        .map(|n| localized_string("en-GB", n)),
                    frequent_flyer_number: leg.frequent_flyer_number.clone(),
                    ..Default::default()
                })
            },
            ..Default::default()
        }),

        boarding_and_seating_info: Some(BoardingAndSeatingInfo {
            boarding_group: Some("GROUP1".to_string()),
            seat_class: Some("Club World".to_string()),
            seat_number: Some(leg.seat_number.clone()),
            sequence_number: Some(leg.check_in_sequence.clone()),
            boarding_privilege_image: airline_data
                .boarding_privilege_logo_url
                .clone()
                .map(|u| url_to_image(u)),
            ..Default::default()
        }),

        barcode: Some(Barcode {
            type_: Some("aztec".to_string()),
            value: Some(pass_barcode),
            ..Default::default()
        }),

        hex_background_color: Some("#b38f47".to_string()),

        ..Default::default()
    };

    Ok((vec![class], vec![pass]))
}

pub fn localized_string(locale: &str, s: &str) -> LocalizedString {
    LocalizedString {
        default_value: Some(TranslatedString {
            language: Some(locale.to_string()),
            value: Some(s.to_string()),
            ..Default::default()
        }),
        ..Default::default()
    }
}

pub fn url_to_image(url: &str) -> Image {
    Image {
        source_uri: Some(ImageUri {
            uri: Some(url.to_string()),
            ..Default::default()
        }),
        ..Default::default()
    }
}