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use fidl::unpersist;
use fidl_cf_sc_internal_wlancfgconfig::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 recovery_enabled: bool,
    pub recovery_profile: String,
    pub roaming_profile: 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![
            0x3d, 0x50, 0x73, 0xfc, 0x1e, 0xdb, 0xe4, 0x91, 0xaf, 0x2d, 0xca, 0x81, 0x0c, 0xf2,
            0x4b, 0xf1, 0x5d, 0x25, 0x82, 0x33, 0xe6, 0x8a, 0xf5, 0xc4, 0x09, 0x93, 0x60, 0xa6,
            0xbb, 0x45, 0x90, 0x17,
        ];
        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 {
            recovery_enabled: fidl_config.recovery_enabled,
            recovery_profile: fidl_config.recovery_profile,
            roaming_profile: fidl_config.roaming_profile,
        }
    }
    pub fn record_inspect(&self, inspector_node: &Node) {
        inspector_node.record_bool("recovery_enabled", self.recovery_enabled);
        inspector_node.record_string("recovery_profile", &self.recovery_profile);
        inspector_node.record_string("roaming_profile", &self.roaming_profile);
    }
}