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use super::*;

const MANAGEMENT_FRAME_SIZE: usize = ManagementFrame::FRAGMENT_SEQUENCE_END;

pub struct ManagementFrameBuilder {
    bytes: [u8; MANAGEMENT_FRAME_SIZE],
}
impl ManagementFrameBuilder {
    #[must_use]
    pub fn new_blank() -> Self {
        let mut builder = Self {
            bytes: [0; MANAGEMENT_FRAME_SIZE],
        };

        builder.type_(FrameType::Management);

        builder
    }

    #[must_use]
    pub fn new_defaults() -> Self {
        Self::new_blank()
    }

    #[must_use]
    pub fn build(&self) -> ManagementFrame {
        ManagementFrame::new(self.bytes().to_vec())
    }
}
impl FrameBuilderTrait for ManagementFrameBuilder {
    fn bytes(&self) -> &[u8] {
        &self.bytes
    }

    fn bytes_mut(&mut self) -> &mut [u8] {
        &mut self.bytes
    }
}

impl FragmentSequenceBuilderTrait for ManagementFrameBuilder {}
impl ManagementFrameBuilderTrait for ManagementFrameBuilder {}

pub trait ManagementFrameBuilderTrait: FrameBuilderTrait + FragmentSequenceBuilderTrait {
    fn addr2(&mut self, mac_address: MacAddress) {
        self.bytes_mut()[10..16].copy_from_slice(mac_address.as_bytes());
    }

    fn addr3(&mut self, mac_address: MacAddress) {
        self.bytes_mut()[16..22].copy_from_slice(mac_address.as_bytes());
    }

    /// Transmitter Address
    /// Who this packet came from wirelessly.
    fn transmitter_address(&mut self, mac_address: MacAddress) {
        self.addr2(mac_address)
    }

    /// Source Address
    /// Who the packet came from.
    fn source_address(&mut self, mac_address: MacAddress) {
        self.transmitter_address(mac_address)
    }

    fn bssid_address(&mut self, mac_address: MacAddress) {
        self.addr3(mac_address)
    }

    fn station_address(&mut self, _mac_address: MacAddress) {
        // noop
    }
}

#[test]
fn test_management_frame_builder() {
    let mut management_frame_builder = ManagementFrameBuilder::new_blank();

    management_frame_builder.version(FrameVersion::Standard);
    management_frame_builder.subtype(FrameSubtype::Management(ManagementSubtype::Beacon));
    management_frame_builder.ds_status(DSStatus::FromDSToSTA);

    management_frame_builder.more_fragments(false);
    management_frame_builder.retry(true);
    management_frame_builder.pwr_mgt(true);
    management_frame_builder.more_data(false);
    management_frame_builder.protected(false);
    management_frame_builder.order(false);

    management_frame_builder.source_address("11:22:33:44:55:66".parse().unwrap());
    management_frame_builder.destination_address("22:22:33:44:55:66".parse().unwrap());
    management_frame_builder.bssid_address("33:22:33:44:55:66".parse().unwrap());

    management_frame_builder.sequence_number(10);
    management_frame_builder.fragment_number(11);

    let management_frame = management_frame_builder.build();

    assert_eq!(
        management_frame.version(),
        FrameVersion::Standard,
        "version"
    );
    assert_eq!(
        management_frame.subtype(),
        FrameSubtype::Management(ManagementSubtype::Beacon),
        "subtype"
    );
    assert_eq!(
        management_frame.ds_status(),
        DSStatus::FromDSToSTA,
        "ds_status"
    );

    assert_eq!(management_frame.more_fragments(), false, "more_fragments");
    assert_eq!(management_frame.retry(), true, "retry");
    assert_eq!(management_frame.pwr_mgt(), true, "pwr_mgt");
    assert_eq!(management_frame.more_data(), false, "more_management");
    assert_eq!(management_frame.protected(), false, "protected");
    assert_eq!(management_frame.order(), false, "order");

    assert_eq!(
        management_frame.source_address().unwrap(),
        "11:22:33:44:55:66".parse().unwrap(),
        "source_address"
    );

    assert_eq!(
        management_frame
            .destination_address()
            .expect("destination_address"),
        "22:22:33:44:55:66".parse().unwrap(),
        "destination_address"
    );

    assert_eq!(
        management_frame.bssid_address().expect("bssid_address"),
        "33:22:33:44:55:66".parse().unwrap(),
        "bssid_address"
    );

    assert_eq!(management_frame.sequence_number(), 10);
    assert_eq!(management_frame.fragment_number(), 11);
}