import { plainToClass } from 'class-transformer';
import { IsBoolean, IsEnum, IsNotEmpty, IsNumber, IsString, Max, Min, validateSync } from 'class-validator';
import { NodeEnv } from '../types/NodeEnv';
import { ShopFiatCurrency } from '../types/ShopFiatCurrency';
import { IsBase64 } from '../validation/decorators/isBase64';
import { IsConfirmationTiers } from '../validation/decorators/isConfirmationTiers';
import { IsEnabledPaymentMethods } from '../validation/decorators/isEnabledPaymentMethods';
import { ElectrumNetwork } from '../types/ElectrumNetwork';
import { MoneroNetwork } from '../types/MoneroNetwork';

class EnvironmentVariables {
    @IsNotEmpty()
    @IsEnum(NodeEnv)
    NODE_ENV: NodeEnv;

    @IsNotEmpty()
    @IsNumber()
    BACKEND_PORT: number;

    @IsNotEmpty()
    @IsString()
    POSTGRES_USER: string;

    @IsNotEmpty()
    @IsString()
    POSTGRES_PASSWORD: string;

    @IsNotEmpty()
    @IsString()
    POSTGRES_DB: string;

    @IsNotEmpty()
    @IsString()
    POSTGRES_HOST: string;

    @IsNotEmpty()
    @IsNumber()
    POSTGRES_PORT: number;

    @IsNotEmpty()
    @IsBoolean()
    POSTGRES_MIGRATIONS_RUN: boolean;

    @IsNotEmpty()
    @IsString()
    CORS_ORIGINS: string;

    @IsNotEmpty()
    @IsString()
    JWT_SECRET: string;

    @IsNotEmpty()
    @IsNumber()
    JWT_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    CMS_PASSWORD: string;

    @IsNotEmpty()
    @IsString()
    SHOP_NAME: string;

    @IsNotEmpty()
    @IsEnum(ShopFiatCurrency)
    SHOP_FIAT_CURRENCY: ShopFiatCurrency;

    @IsNotEmpty()
    @IsString()
    MULTER_PRODUCT_THUMB_ALLOWED_MIMES: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(10 * 1024 * 1024) // 10MB
    MULTER_PRODUCT_THUMB_MAX_FILE_BYTES: number;

    @IsNotEmpty()
    @IsString()
    MULTER_SHOP_LOGO_ALLOWED_MIMES: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(10 * 1024 * 1024) // 10MB
    MULTER_SHOP_LOGO_MAX_FILE_BYTES: number;

    @IsNotEmpty()
    @IsString()
    MULTER_SHOP_FAVICON_ALLOWED_MIMES: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(10 * 1024 * 1024) // 10MB
    MULTER_SHOP_FAVICON_MAX_FILE_BYTES: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(256)
    VALIDATION_PRODUCT_TITLE_MAX_LENGTH: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(256)
    VALIDATION_CATEGORY_NAME_MAX_LENGTH: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(64)
    VALIDATION_DISCOUNT_CODE_MAX_LENGTH: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(100)
    VALIDATION_VARIANT_IMAGES_MAX: number;

    @IsNotEmpty()
    @IsString()
    MULTER_DIGITAL_STOCK_ATTACHMENT_ALLOWED_MIMES: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(50 * 1024 * 1024) // 50MB
    MULTER_DIGITAL_STOCK_ATTACHMENT_MAX_FILE_BYTES: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(20)
    VALIDATION_DIGITAL_STOCK_ATTACHMENTS_MAX: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(1000)
    VALIDATION_SHIPPING_NOTE_MIN_LENGTH: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(10000)
    VALIDATION_SHIPPING_NOTE_MAX_LENGTH: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(10000)
    VALIDATION_ORDER_MESSAGE_MAX_LENGTH: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(4)
    @Max(8)
    CAPTCHA_LENGTH: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1000)
    @Max(3_600_000)
    THROTTLE_TTL_MS: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(10_000)
    THROTTLE_LIMIT: number;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_JWT_SECRET: string;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_FEEDBACK_NAME: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    SIGNED_COOKIE_FEEDBACK_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_CART_NAME: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    SIGNED_COOKIE_CART_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_CAPTCHA_NAME: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    SIGNED_COOKIE_CAPTCHA_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_DISCOUNT_NAME: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    SIGNED_COOKIE_DISCOUNT_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_ERROR_NAME: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    SIGNED_COOKIE_ERROR_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_CHECKOUT_SESSION_NAME: string;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_ORDER_AUTH_NAME: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    SIGNED_COOKIE_ORDER_AUTH_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    SIGNED_COOKIE_THEME_NAME: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    SIGNED_COOKIE_THEME_EXPIRES_IN_MS: number;

    @IsNotEmpty()
    @IsString()
    COINGECKO_API_BASE_URL: string;

    @IsNotEmpty()
    @IsString()
    COINPAPRIKA_API_BASE_URL: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    COINPAPRIKA_RATE_FETCH_TIMEOUT_MS: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    COINGECKO_RATE_FETCH_TIMEOUT_MS: number;

    @IsNotEmpty()
    @IsString()
    @IsBase64({ byteLength: 32 })
    BASE64_ENCRYPTION_KEY: string;

    @IsNotEmpty()
    @IsString()
    @IsConfirmationTiers()
    MONERO_CONFIRMATION_TIERS: string;

    @IsNotEmpty()
    @IsString()
    @IsConfirmationTiers()
    BITCOIN_CONFIRMATION_TIERS: string;

    @IsNotEmpty()
    @IsString()
    @IsEnabledPaymentMethods()
    PAYMENT_METHODS_ENABLED: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(60000)
    ORDER_CHECKOUT_VALIDITY_MS: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    ORDER_CHECKOUT_STATUS_REFRESH_SEC: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(60000)
    ORDER_SHIPPING_PAYMENT_VALIDITY_MS: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    ORDER_DATA_RETENTION_DAYS: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(0)
    @Max(Number.MAX_SAFE_INTEGER)
    MONERO_MIN_INCOMING_ATOMIC: number;

    @IsNotEmpty()
    @IsNumber()
    @Min(0)
    @Max(Number.MAX_SAFE_INTEGER)
    BITCOIN_MIN_INCOMING_ATOMIC: number;

    @IsNotEmpty()
    @IsString()
    MONERO_DAEMON_ADDRESS: string;

    @IsNotEmpty()
    @IsEnum(MoneroNetwork)
    MONERO_NETWORK: MoneroNetwork;

    @IsNotEmpty()
    @IsString()
    MONERO_WALLET_RPC_HOST: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(65535)
    MONERO_WALLET_RPC_PORT: number;

    @IsNotEmpty()
    @IsString()
    MONERO_WALLET_RPC_USERNAME: string;

    @IsNotEmpty()
    @IsString()
    MONERO_WALLET_RPC_PASSWORD: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1000)
    MONERO_WALLET_RPC_TIMEOUT_MS: number;

    @IsNotEmpty()
    @IsEnum(ElectrumNetwork)
    ELECTRUM_NETWORK: ElectrumNetwork;

    @IsNotEmpty()
    @IsString()
    ELECTRUM_SERVER: string;

    @IsNotEmpty()
    @IsString()
    ELECTRUM_DAEMON_HOST: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1)
    @Max(65535)
    ELECTRUM_DAEMON_PORT: number;

    @IsNotEmpty()
    @IsString()
    ELECTRUM_DAEMON_RPC_USER: string;

    @IsNotEmpty()
    @IsString()
    ELECTRUM_DAEMON_RPC_PASSWORD: string;

    @IsNotEmpty()
    @IsNumber()
    @Min(1000)
    ELECTRUM_DAEMON_RPC_TIMEOUT_MS: number;

    @IsNotEmpty()
    @IsString()
    ELECTRUM_WALLET_PASSWORD: string;

    @IsNotEmpty()
    @IsString()
    SIMPLEX_WS_URL: string;

    @IsNotEmpty()
    @IsString()
    SIMPLEX_BOT_DISPLAY_NAME: string;
}

export const validate = (config: Record<string, unknown>) => {
    const validatedConfig = plainToClass(EnvironmentVariables, config, {
        enableImplicitConversion: true
    });

    const errors = validateSync(validatedConfig, {
        skipMissingProperties: false
    });

    if (errors.length > 0) {
        throw new Error(errors.toString());
    }

    return validatedConfig;
};