import {
    AppConfig,
    CoingeckoConfig,
    EncryptionConfig,
    InvoiceConfig,
    JwtConfig,
    CoinPaprikaConfig,
    MulterConfig,
    OrderConfig,
    PostgresConfig,
    ShopSettingsConfig
} from '../types/Config';
import { ElectrumNetwork } from '../types/ElectrumNetwork';
import { ElectrumWalletConfig } from '../types/ElectrumWalletConfig';
import { MoneroNetwork } from '../types/MoneroNetwork';
import { MoneroWalletConfig } from '../types/MoneroWalletConfig';
import { ConfirmationTier } from '../types/ConfirmationTier';
import { NodeEnv } from '../types/NodeEnv';
import { ShopFiatCurrency } from '../types/ShopFiatCurrency';
import { PaymentMethod } from '../modules/payment/types/PaymentMethod';
import { SimplexConfig } from '../types/SimplexConfig';
import { parseEnabledPaymentMethods } from '../utils/payment/parseEnabledPaymentMethods';

const env = (key: string): string => process.env[key] || '';

const envInt = (key: string): number => parseInt(env(key), 10);

const isEnabled = (key: string): boolean => env(key) === 'true';

export const getPostgresConfig = (): PostgresConfig => {
    return {
        type: 'postgres',
        url: `postgres://${env('POSTGRES_USER')}:${env('POSTGRES_PASSWORD')}@${env('POSTGRES_HOST')}:${env('POSTGRES_PORT')}/${env('POSTGRES_DB')}`,
        host: env('POSTGRES_HOST'),
        username: env('POSTGRES_USER'),
        password: env('POSTGRES_PASSWORD'),
        port: envInt('POSTGRES_PORT'),
        database: env('POSTGRES_DB'),
        entities: [__dirname + '/../modules/**/entities/*{.ts,.js}'],
        migrations: [__dirname + '/../database/migrations/*{.ts,.js}'],
        migrationsRun: isEnabled('POSTGRES_MIGRATIONS_RUN')
    };
};

export const getAppConfig = (): AppConfig => {
    const rawOrigins = env('CORS_ORIGINS');

    return {
        port: envInt('BACKEND_PORT'),
        nodeEnv: env('NODE_ENV') as NodeEnv,
        corsOrigins: rawOrigins
            .split(',')
            .map(o => o.trim())
            .filter(Boolean),
        cmsPassword: env('CMS_PASSWORD'),
        captcha: {
            length: envInt('CAPTCHA_LENGTH')
        },
        throttle: {
            ttlMs: envInt('THROTTLE_TTL_MS'),
            limit: envInt('THROTTLE_LIMIT')
        },
        signedCookie: {
            jwtSecret: env('SIGNED_COOKIE_JWT_SECRET'),
            feedback: {
                cookieName: env('SIGNED_COOKIE_FEEDBACK_NAME'),
                expiresInMs: envInt('SIGNED_COOKIE_FEEDBACK_EXPIRES_IN_MS')
            },
            cart: {
                cookieName: env('SIGNED_COOKIE_CART_NAME'),
                expiresInMs: envInt('SIGNED_COOKIE_CART_EXPIRES_IN_MS')
            },
            captcha: {
                cookieName: env('SIGNED_COOKIE_CAPTCHA_NAME'),
                expiresInMs: envInt('SIGNED_COOKIE_CAPTCHA_EXPIRES_IN_MS')
            },
            discount: {
                cookieName: env('SIGNED_COOKIE_DISCOUNT_NAME'),
                expiresInMs: envInt('SIGNED_COOKIE_DISCOUNT_EXPIRES_IN_MS')
            },
            error: {
                cookieName: env('SIGNED_COOKIE_ERROR_NAME'),
                expiresInMs: envInt('SIGNED_COOKIE_ERROR_EXPIRES_IN_MS')
            },
            checkoutSession: {
                cookieName: env('SIGNED_COOKIE_CHECKOUT_SESSION_NAME'),
                expiresInMs: envInt('ORDER_CHECKOUT_VALIDITY_MS')
            },
            orderAuth: {
                cookieName: env('SIGNED_COOKIE_ORDER_AUTH_NAME'),
                expiresInMs: envInt('SIGNED_COOKIE_ORDER_AUTH_EXPIRES_IN_MS')
            },
            theme: {
                cookieName: env('SIGNED_COOKIE_THEME_NAME'),
                expiresInMs: envInt('SIGNED_COOKIE_THEME_EXPIRES_IN_MS')
            }
        },
        validation: {
            productTitleMaxLength: envInt('VALIDATION_PRODUCT_TITLE_MAX_LENGTH'),
            categoryNameMaxLength: envInt('VALIDATION_CATEGORY_NAME_MAX_LENGTH'),
            discountCodeMaxLength: envInt('VALIDATION_DISCOUNT_CODE_MAX_LENGTH'),
            variantImagesMax: envInt('VALIDATION_VARIANT_IMAGES_MAX'),
            digitalStockAttachmentsMax: envInt('VALIDATION_DIGITAL_STOCK_ATTACHMENTS_MAX'),
            shippingNoteMinLength: envInt('VALIDATION_SHIPPING_NOTE_MIN_LENGTH'),
            shippingNoteMaxLength: envInt('VALIDATION_SHIPPING_NOTE_MAX_LENGTH'),
            orderMessageMaxLength: envInt('VALIDATION_ORDER_MESSAGE_MAX_LENGTH'),
            bitcoinWithdrawMaxFeeRateSatVbyte: envInt('VALIDATION_BITCOIN_WITHDRAW_MAX_FEE_RATE_SAT_VBYTE')
        }
    };
};

export const getJwtConfig = (): JwtConfig => {
    return {
        secret: env('JWT_SECRET'),
        expiresInMs: envInt('JWT_EXPIRES_IN_MS')
    };
};

export const getProductThumbMulterConfig = (): MulterConfig => {
    const allowedMimes = env('MULTER_PRODUCT_THUMB_ALLOWED_MIMES')
        .split(',')
        .map(v => v.trim())
        .filter(Boolean);

    const maxFileBytes = envInt('MULTER_PRODUCT_THUMB_MAX_FILE_BYTES');

    return { allowedMimes, maxFileBytes };
};

export const getShopLogoMulterConfig = (): MulterConfig => {
    const allowedMimes = env('MULTER_SHOP_LOGO_ALLOWED_MIMES')
        .split(',')
        .map(v => v.trim())
        .filter(Boolean);

    const maxFileBytes = envInt('MULTER_SHOP_LOGO_MAX_FILE_BYTES');

    return { allowedMimes, maxFileBytes };
};

export const getShopFaviconMulterConfig = (): MulterConfig => {
    const allowedMimes = env('MULTER_SHOP_FAVICON_ALLOWED_MIMES')
        .split(',')
        .map(v => v.trim())
        .filter(Boolean);

    const maxFileBytes = envInt('MULTER_SHOP_FAVICON_MAX_FILE_BYTES');

    return { allowedMimes, maxFileBytes };
};

export const getDigitalStockAttachmentMulterConfig = (): MulterConfig => {
    const allowedMimes = env('MULTER_DIGITAL_STOCK_ATTACHMENT_ALLOWED_MIMES')
        .split(',')
        .map(v => v.trim())
        .filter(Boolean);

    const maxFileBytes = envInt('MULTER_DIGITAL_STOCK_ATTACHMENT_MAX_FILE_BYTES');

    return { allowedMimes, maxFileBytes };
};

export const getCoingeckoConfig = (): CoingeckoConfig => {
    return {
        apiBaseUrl: env('COINGECKO_API_BASE_URL'),
        rateFetchTimeoutMs: envInt('COINGECKO_RATE_FETCH_TIMEOUT_MS')
    };
};

export const getCoinPaprikaConfig = (): CoinPaprikaConfig => {
    return {
        apiBaseUrl: env('COINPAPRIKA_API_BASE_URL'),
        rateFetchTimeoutMs: envInt('COINPAPRIKA_RATE_FETCH_TIMEOUT_MS')
    };
};

export const getEncryptionConfig = (): EncryptionConfig => ({
    keyBase64: env('BASE64_ENCRYPTION_KEY')
});

export const getShopSettingsConfig = (): ShopSettingsConfig => ({
    shopName: env('SHOP_NAME'),
    shopFiatCurrency: env('SHOP_FIAT_CURRENCY') as ShopFiatCurrency,
    enabledPaymentMethods: parseEnabledPaymentMethods(env('PAYMENT_METHODS_ENABLED')),
    monero: {
        confirmationTiers: JSON.parse(env('MONERO_CONFIRMATION_TIERS')) as ConfirmationTier[]
    },
    bitcoin: {
        confirmationTiers: JSON.parse(env('BITCOIN_CONFIRMATION_TIERS')) as ConfirmationTier[]
    }
});

export const getOrderConfig = (): OrderConfig => ({
    checkoutValidityMs: envInt('ORDER_CHECKOUT_VALIDITY_MS'),
    shippingPaymentValidityMs: envInt('ORDER_SHIPPING_PAYMENT_VALIDITY_MS'),
    checkoutStatusRefreshSec: envInt('ORDER_CHECKOUT_STATUS_REFRESH_SEC'),
    dataRetentionDays: envInt('ORDER_DATA_RETENTION_DAYS')
});

export const getInvoiceConfig = (): InvoiceConfig => ({
    minByMethod: {
        [PaymentMethod.Xmr]: String(envInt('MONERO_MIN_INCOMING_ATOMIC')),
        [PaymentMethod.Btc]: String(envInt('BITCOIN_MIN_INCOMING_ATOMIC'))
    }
});

export const getMoneroWalletConfig = (): MoneroWalletConfig => ({
    network: env('MONERO_NETWORK') as MoneroNetwork,
    rpcUrl: `http://${env('MONERO_WALLET_RPC_HOST')}:${envInt('MONERO_WALLET_RPC_PORT')}/json_rpc`,
    daemonRpcUrl: `http://${env('MONERO_DAEMON_ADDRESS')}/json_rpc`,
    username: env('MONERO_WALLET_RPC_USERNAME'),
    password: env('MONERO_WALLET_RPC_PASSWORD'),
    rpcTimeoutMs: envInt('MONERO_WALLET_RPC_TIMEOUT_MS')
});

export const getElectrumWalletConfig = (): ElectrumWalletConfig => ({
    network: env('ELECTRUM_NETWORK') as ElectrumNetwork,
    server: env('ELECTRUM_SERVER'),
    rpcUrl: `http://${env('ELECTRUM_DAEMON_HOST')}:${envInt('ELECTRUM_DAEMON_PORT')}`,
    username: env('ELECTRUM_DAEMON_RPC_USER'),
    password: env('ELECTRUM_DAEMON_RPC_PASSWORD'),
    walletPassword: env('ELECTRUM_WALLET_PASSWORD'),
    rpcTimeoutMs: envInt('ELECTRUM_DAEMON_RPC_TIMEOUT_MS')
});

export const getSimplexConfig = (): SimplexConfig => ({
    wsUrl: env('SIMPLEX_WS_URL'),
    botDisplayName: env('SIMPLEX_BOT_DISPLAY_NAME')
});

export default () => ({
    postgres: getPostgresConfig(),
    app: getAppConfig(),
    jwt: getJwtConfig(),
    coingecko: getCoingeckoConfig(),
    coinPaprika: getCoinPaprikaConfig(),
    encryption: getEncryptionConfig(),
    shopSettings: getShopSettingsConfig(),
    order: getOrderConfig(),
    invoice: getInvoiceConfig(),
    moneroWallet: getMoneroWalletConfig(),
    electrumWallet: getElectrumWalletConfig(),
    simplex: getSimplexConfig()
});