import type { WalletName } from '@solana/wallet-adapter-base';
import {
    BaseSignerWalletAdapter,
    scopePollingDetectionStrategy,
    WalletAccountError,
    WalletNotConnectedError,
    WalletNotReadyError,
    WalletPublicKeyError,
    WalletReadyState,
    WalletSignTransactionError,
} from '@solana/wallet-adapter-base';
import type { Transaction } from '@solana/web3.js';
import { PublicKey } from '@solana/web3.js';

interface SolongWallet {
    currentAccount?: string | null;
    selectAccount(): Promise<string>;
    signTransaction(transaction: Transaction): Promise<Transaction>;
}

interface SolongWindow extends Window {
    solong?: SolongWallet;
}

declare const window: SolongWindow;

export interface SolongWalletAdapterConfig {}

export const SolongWalletName = 'Solong' as WalletName<'Solong'>;

export class SolongWalletAdapter extends BaseSignerWalletAdapter {
    name = SolongWalletName;
    url = 'https://solongwallet.io';
    icon =
        'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAYAAACOEfKtAAAGlklEQVR4Ae3bA5DsyhfH8TNr49r2/du2bdu2bdu2zcdNrm3b9toz533rvctUn3Umk9p01WfdvVW/6nROBxJVS1rSkpa0pCUtaUlLWtKSpl4VXos3GJ4sujQFuUKfWl+qT730arzB8Ex9YksKcgXjFOCVeIPhBYydB8mawQ+yiGC8n0EN6zAVcgXhpQjoq1DDdsyDAAB9Pwo1HMC9INk0FIM8Bt1Qh9WohQQCvD+BtEMdtmC8I7y5aIE67MV0SBwDvB3qsE/UHwMJIpC/QB1OYiLEEeCPoQ7nMRcSwwDrao3Zl8aTIEGEUYlL0IAMXuQOr66UvsegDm+ExDJAPNiafSg0AlyIbmjAWX1aQzEkiH6T0QkNaEdpnAN8NNRhPcSF9e9el2ebBhyAuNBvGtLQgIuQOAd4D6jDMRQbM3AmOqEBDfq0xjJIEP3GohkakEFVjAP0y401sAsLnAE+pb6EsC5AA9J4sHsG+kX0PQR1eFJ8AwTWQh0+DjFm4a1Qh2/AOoz/BHX4ZdwD/CDU4aioX2GUMW+AOnB2bqiBBDHe86EOTYw5GRKJwQ/ijUM91OGTxgysxSmowzeNw7j08m5DHX4l7Igg2TY0g9hbLBZ+f7oxC98CdWjDvYzD+MVQh07GfEQsZyDgVWA71OGvorfnQQCAcqaYUFZDHW6j/itAoB70GcergzqsEa0rhGTTEA7mP0koK4xdyeOMmvBBhJU2zsjPMw7lu9O3zShpXheHk4hhcZ4w26AOG4RSxDiUfwZ12KdPqy+FBDHeV6EOZxizIg6HsMGbiQ5jdjzBXRfeefGg3tgbv9BYC0fhZE7sjUMY9Pf9rdcI5XtQh39BjBA/C3VYnM0zcgiDek+GOhzh93mQoMs7kIxze/eMhnxIEOPNM9bcFtTEeAb6I419axu/m2CsgxU4Aw1A/UxIUM/bO/9+cVkDDd5x42x8N1iH8Taow0NhHcZLoQ5Pi/MMzDMW+DTu7g6vIY9AdkAdHmaUMyn6roA6PD22AeLB6DbWplHG7LubfY+kfiIkiH5T0AJ1uFtMA1xUzOc1UIclzvCeXF+o7DygDlvds29RgVVzYj+K4xhgEX4NdcjgecE++rSL+ZdLmIxRB77Ose7l4XPIQB3eF8M60C/n8++ghltE/QLIFfqUiyUE8kOoYSW7jmLIFXeN4X0NaajDDlG/NG6XswrxKdxu+G/weh27j3wCej9uN9zEOjc3sObl4S243XBLhDfWE0mAMQjwZfhxDng7pG/8Sj4/ER/Gd/BdfBhPRGW2A/wxNAfcBOnFCHwZZ6GGs/gqapMAb/QEnIT20Uk8IQkQeB7aof3UihcM9wDvhyboANHXv1+IdWBOB2hsIftto+iSPEif8aGPcjrA50GHyPMiOIT9B/N5apaMgQT8D2poxMdwt8s+hkao4X9ZDxBTIdHwy/h8AeqQxhMhAU9BB9ThPMqHTYCYjU6owy3uPstSfL4Z6uZPC+Mk8gOomz8DEg3vXshAHb4MMXwZarhXGDPwa739w2j48623BPAniOFPUMPsMAL8INTw9AgDrLZOCmjFPEjA3WD1aUJVGAG+CGr4ECRCy6GGg3iyaF0+n/PwFByEGpaJ+qkw1sB7QA3/hUTozdBetFymvXhTWGVMOc7bp36/FhKRamNW9dcxZmpZiI+32ad+vAQSoWejGzpAXXh22Fek3wY1rDD2kVnijR3ExYQMPgkJOUB/nFW0Is3vnw6JhlHX9a4N70Iq/ACBv0MNu7J9WxHw7jaA2deFOtw32zeVHtHLWvMN0dtSkOzwS3spYy7iH1hx2d/wYdyTvnkR3BdeQjjerVBDN14JyZIfQWH5RC7e1rw32npZV54LCc+SPD5/HgqYD3WW5+gTqt6X+rA4v0701hRkKF0+bL+HTM9Hgv/MHH60wyvHWigsafwA1ZAhMguLoL34kbDcQEI1uAH8mcbuxPHImf8i5EMGxqvER9EI7cUqVMTl0Y6HoxHaBzvxNkyC9EEe7oEv4Sy0D/YQ+IS4ver1JNT38z7sWnwbb8TT8Cg8Gs/Gu/Ar7EEXtI/2ud7Ni0GAYCbiJDQiazA57k9nTcdqaJb9UtSvitXbmjavCJ9AMzRkJ/B80boUJBLhDe7Nw1/QCR1i9fgKRg6HByzvjZ/hInQQMjiCT2PSMHxC1a/l8wvwGxyG9kEaW/EtPI4xiiE5JcLrd6PxcLwM78SH8EG8Fc/H/UUXVUByGh8SSYBJgEmASYCJJMAkwBi6A3xCqZhiBz8+AAAAAElFTkSuQmCC';
    readonly supportedTransactionVersions = null;

    private _connecting: boolean;
    private _wallet: SolongWallet | null;
    private _publicKey: PublicKey | null;
    private _readyState: WalletReadyState =
        typeof window === 'undefined' || typeof document === 'undefined'
            ? WalletReadyState.Unsupported
            : WalletReadyState.NotDetected;

    constructor(config: SolongWalletAdapterConfig = {}) {
        super();
        this._connecting = false;
        this._wallet = null;
        this._publicKey = null;

        if (this._readyState !== WalletReadyState.Unsupported) {
            scopePollingDetectionStrategy(() => {
                if (window.solong) {
                    this._readyState = WalletReadyState.Installed;
                    this.emit('readyStateChange', this._readyState);
                    return true;
                }
                return false;
            });
        }
    }

    get publicKey() {
        return this._publicKey;
    }

    get connecting() {
        return this._connecting;
    }

    get connected() {
        return !!this._wallet?.currentAccount;
    }

    get readyState() {
        return this._readyState;
    }

    async connect(): Promise<void> {
        try {
            if (this.connected || this.connecting) return;
            if (this._readyState !== WalletReadyState.Installed) throw new WalletNotReadyError();

            this._connecting = true;

            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
            const wallet = window.solong!;

            let account: string;
            try {
                account = await wallet.selectAccount();
            } catch (error: any) {
                throw new WalletAccountError(error?.message, error);
            }

            let publicKey: PublicKey;
            try {
                publicKey = new PublicKey(account);
            } catch (error: any) {
                throw new WalletPublicKeyError(error?.message, error);
            }

            this._wallet = wallet;
            this._publicKey = publicKey;

            this.emit('connect', publicKey);
        } catch (error: any) {
            this.emit('error', error);
            throw error;
        } finally {
            this._connecting = false;
        }
    }

    async disconnect(): Promise<void> {
        if (this._wallet) {
            this._wallet = null;
            this._publicKey = null;
        }

        this.emit('disconnect');
    }

    async signTransaction<T extends Transaction>(transaction: T): Promise<T> {
        try {
            const wallet = this._wallet;
            if (!wallet) throw new WalletNotConnectedError();

            try {
                return ((await wallet.signTransaction(transaction)) as T) || transaction;
            } catch (error: any) {
                throw new WalletSignTransactionError(error?.message, error);
            }
        } catch (error: any) {
            this.emit('error', error);
            throw error;
        }
    }
}