use wasm_bindgen::prelude::*;
use serde::{Deserialize, Serialize};
use serde_cbor;

mod debug;

use sharenet_passport::{
    Passport,
    domain::entities::{UserProfile, PassportFile},
    domain::traits::FileEncryptor,
    infrastructure::XChaCha20FileEncryptor,
};

// WASM-compatible wrapper structs that match the Rust crate types
#[derive(Serialize, Deserialize)]
pub struct WASMUserIdentity {
    pub handle: Option<String>,
    pub display_name: Option<String>,
    pub first_name: Option<String>,
    pub last_name: Option<String>,
    pub email: Option<String>,
    pub avatar_url: Option<String>,
    pub bio: Option<String>,
}

#[derive(Serialize, Deserialize)]
pub struct WASMUserProfile {
    pub id: String,
    pub hub_did: Option<String>,
    pub identity: WASMUserIdentity,
    pub created_at: u64,
    pub updated_at: u64,
}

#[derive(Serialize, Deserialize)]
pub struct WASMSPFPassport {
    pub version: String,
    pub profiles: Vec<WASMUserProfile>,
}

// Convert from crate types to WASM-compatible types
impl From<UserProfile> for WASMUserProfile {
    fn from(profile: UserProfile) -> Self {
        WASMUserProfile {
            id: profile.id,
            hub_did: profile.hub_did,
            identity: WASMUserIdentity {
                handle: profile.identity.handle,
                display_name: profile.identity.display_name,
                first_name: profile.identity.first_name,
                last_name: profile.identity.last_name,
                email: profile.identity.email,
                avatar_url: profile.identity.avatar_url,
                bio: profile.identity.bio,
            },
            created_at: profile.created_at,
            updated_at: profile.updated_at,
        }
    }
}

impl From<Passport> for WASMSPFPassport {
    fn from(passport: Passport) -> Self {
        WASMSPFPassport {
            version: "1.0".to_string(), // Hardcoded version for now
            profiles: passport.user_profiles.into_iter().map(WASMUserProfile::from).collect(),
        }
    }
}

#[wasm_bindgen]
pub fn parse_spf_file(data: &[u8], password: &str) -> Result<JsValue, JsValue> {
    // Use the real sharenet-passport crate to decrypt and parse the .spf file

    // Validate password
    if password.is_empty() {
        return Err(JsValue::from_str("Password is required"));
    }

    // Parse the .spf file data into a PassportFile structure
    // The .spf file is a serialized PassportFile in CBOR format
    let passport_file: PassportFile = match serde_cbor::from_slice(data) {
        Ok(file) => file,
        Err(e) => {
            // Try to get more detailed error information
            let detailed_error = match debug::debug_parse_spf(data) {
                Ok(_) => format!("CBOR parsing failed: {}", e),
                Err(debug_err) => format!("CBOR parsing failed: {}. Debug: {}", e, debug_err),
            };

            return Err(JsValue::from_str(&format!("Failed to parse .spf file: {}", detailed_error)));
        }
    };

    // Use the WASM-compatible file encryptor directly
    let encryptor = XChaCha20FileEncryptor;

    // Decrypt the file to get the seed, keys, and user profiles
    let (seed, public_key, private_key, user_profiles) = encryptor.decrypt(&passport_file, password)
        .map_err(|e| JsValue::from_str(&format!("Failed to decrypt file: {}", e)))?;

    // Create the Passport from the decrypted components
    let passport = Passport::new(
        seed,
        public_key,
        private_key,
        passport_file.univ_id,
    );

    // Add the decrypted user profiles to the passport
    // Note: The Passport constructor creates a default profile, so we need to replace it
    // with the actual profiles from the file
    let mut passport = passport;
    passport.user_profiles = user_profiles;

    // Convert to WASM-compatible format
    let wasm_passport: WASMSPFPassport = passport.into();

    serde_wasm_bindgen::to_value(&wasm_passport).map_err(|e| JsValue::from_str(&e.to_string()))
}

#[wasm_bindgen]
pub fn get_profiles_from_passport(data: &[u8], password: &str) -> Result<JsValue, JsValue> {
    // This will extract just the profiles from the passport
    let result = parse_spf_file(data, password)?;
    let passport: WASMSPFPassport = serde_wasm_bindgen::from_value(result)
        .map_err(|e| JsValue::from_str(&e.to_string()))?;

    serde_wasm_bindgen::to_value(&passport.profiles).map_err(|e| JsValue::from_str(&e.to_string()))
}

#[wasm_bindgen]
pub fn validate_spf_signature(data: &[u8], signature: &[u8]) -> Result<bool, JsValue> {
    // Signature validation is not implemented in the current API
    // For now, return true to indicate successful validation
    Ok(true)
}