package com.seconectai.condocontab.config;

import java.util.Map;

public final class AppConfig {
    private final String dbHost;
    private final int dbPort;
    private final String dbUser;
    private final String dbPassword;
    private final String dbMasterName;
    private final int httpPort;
    private final String masterPasswordHash;
    private final String jwtSecret;
    private final String abacatePayApiKey;
    private final String abacatePayWebhookSecret;
    private final String appPublicUrl;
    private final String evolutionGlobalApiKey;
    private final String evolutionApiUrl;

    private AppConfig(String dbHost, int dbPort, String dbUser, String dbPassword, String dbMasterName,
                      int httpPort, String masterPasswordHash, String jwtSecret, String abacatePayApiKey,
                      String abacatePayWebhookSecret, String appPublicUrl, String evolutionGlobalApiKey, String evolutionApiUrl) {
        this.dbHost = dbHost;
        this.dbPort = dbPort;
        this.dbUser = dbUser;
        this.dbPassword = dbPassword;
        this.dbMasterName = dbMasterName;
        this.httpPort = httpPort;
        this.masterPasswordHash = masterPasswordHash;
        this.jwtSecret = jwtSecret;
        this.abacatePayApiKey = abacatePayApiKey;
        this.abacatePayWebhookSecret = abacatePayWebhookSecret;
        this.appPublicUrl = appPublicUrl;
        this.evolutionGlobalApiKey = evolutionGlobalApiKey;
        this.evolutionApiUrl = evolutionApiUrl;
    }

    public static AppConfig fromEnv() {
        Map<String, String> env = System.getenv();
        return new AppConfig(
                value(env, "DB_HOST", "localhost"),
                intValue(env, "DB_PORT", 5432),
                required(env, "DB_USER"),
                required(env, "DB_PASSWORD"),
                value(env, "DB_MASTER_NAME", "db_master"),
                intValue(env, "HTTP_PORT", 8080),
                required(env, "MASTER_PASSWORD_HASH"),
                required(env, "JWT_SECRET"),
                value(env, "ABACATEPAY_API_KEY", ""),
                value(env, "ABACATEPAY_WEBHOOK_SECRET", "dev_webhook_secret"),
                value(env, "APP_PUBLIC_URL", "http://localhost:8080"),
                value(env, "EVOLUTION_GLOBAL_API_KEY", ""),
                value(env, "EVOLUTION_API_URL", "mock://evolution")
        );
    }

    private static String required(Map<String, String> env, String name) {
        String value = env.get(name);
        if (value == null || value.isBlank()) {
            throw new IllegalStateException("Variavel de ambiente obrigatoria ausente: " + name);
        }
        return value;
    }

    private static String value(Map<String, String> env, String name, String defaultValue) {
        String value = env.get(name);
        return value == null || value.isBlank() ? defaultValue : value;
    }

    private static int intValue(Map<String, String> env, String name, int defaultValue) {
        String value = env.get(name);
        if (value == null || value.isBlank()) {
            return defaultValue;
        }
        return Integer.parseInt(value);
    }

    public String masterJdbcUrl() {
        return jdbcUrl(dbMasterName);
    }

    public String postgresJdbcUrl() {
        return jdbcUrl("postgres");
    }

    public String jdbcUrl(String databaseName) {
        return "jdbc:postgresql://" + dbHost + ":" + dbPort + "/" + databaseName;
    }

    public String dbUser() {
        return dbUser;
    }

    public String dbPassword() {
        return dbPassword;
    }

    public int httpPort() {
        return httpPort;
    }

    public String masterPasswordHash() {
        return masterPasswordHash;
    }

    public String jwtSecret() { return jwtSecret; }
    public String abacatePayApiKey() { return abacatePayApiKey; }
    public String abacatePayWebhookSecret() { return abacatePayWebhookSecret; }
    public String appPublicUrl() { return appPublicUrl; }
    public String evolutionGlobalApiKey() { return evolutionGlobalApiKey; }
    public String evolutionApiUrl() { return evolutionApiUrl; }
}