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use fidl::unpersist;
use fidl_cf_sc_internal_a2dpprofileconfig::Config as FidlConfig;
use fuchsia_inspect::Node;
use fuchsia_runtime::{take_startup_handle, HandleInfo, HandleType};
use fuchsia_zircon as zx;
#[derive(Debug)]
pub struct Config {
    pub channel_mode: String,
    pub domain: String,
    pub enable_aac: bool,
    pub enable_avrcp_target: bool,
    pub enable_sink: bool,
    pub initiator_delay: u32,
    pub source_type: String,
}
impl Config {
    pub fn take_from_startup_handle() -> Self {
        let config_vmo: zx::Vmo =
            take_startup_handle(HandleInfo::new(HandleType::ComponentConfigVmo, 0))
                .expect("Config VMO handle must be provided and cannot already have been taken.")
                .into();
        let config_size =
            config_vmo.get_content_size().expect("must be able to read config vmo content size");
        assert_ne!(config_size, 0, "config vmo must be non-empty");
        let mut config_bytes = Vec::new();
        config_bytes.resize(config_size as usize, 0);
        config_vmo.read(&mut config_bytes, 0).expect("must be able to read config vmo");
        let checksum_length = u16::from_le_bytes([config_bytes[0], config_bytes[1]]) as usize;
        let fidl_start = 2 + checksum_length;
        let observed_checksum = &config_bytes[2..fidl_start];
        let expected_checksum = vec![
            0x86, 0xf7, 0xab, 0x7e, 0x80, 0xb6, 0x5f, 0x16, 0x55, 0xf7, 0xf1, 0x51, 0x01, 0xd5,
            0xd1, 0x1e, 0xb5, 0x19, 0xbb, 0xa3, 0xc4, 0x27, 0x1e, 0xd5, 0xfd, 0x77, 0xfc, 0xa2,
            0x47, 0x24, 0x96, 0x85,
        ];
        assert_eq!(
            observed_checksum, expected_checksum,
            "checksum from config VMO does not match expected checksum"
        );
        let fidl_config: FidlConfig = unpersist(&config_bytes[fidl_start..])
            .expect("must be able to parse bytes as config FIDL");
        Self {
            channel_mode: fidl_config.channel_mode,
            domain: fidl_config.domain,
            enable_aac: fidl_config.enable_aac,
            enable_avrcp_target: fidl_config.enable_avrcp_target,
            enable_sink: fidl_config.enable_sink,
            initiator_delay: fidl_config.initiator_delay,
            source_type: fidl_config.source_type,
        }
    }
    pub fn record_inspect(&self, inspector_node: &Node) {
        inspector_node.record_string("channel_mode", &self.channel_mode);
        inspector_node.record_string("domain", &self.domain);
        inspector_node.record_bool("enable_aac", self.enable_aac);
        inspector_node.record_bool("enable_avrcp_target", self.enable_avrcp_target);
        inspector_node.record_bool("enable_sink", self.enable_sink);
        inspector_node.record_uint("initiator_delay", self.initiator_delay as u64);
        inspector_node.record_string("source_type", &self.source_type);
    }
}