import { Sequelize, Options } from "@sequelize/core"
import { PostgresDialect } from "@sequelize/postgres"
import { isEmpty, isNil } from "lodash"

import {
  DB_DATABASE,
  DB_HOST,
  DB_PASSWORD,
  DB_PORT,
  DB_SSL,
  DB_USERNAME,
  SEQUELIZE_LOGGING,
} from "@/config"
import compactSql from "@/utils/compact-sql"

if (isEmpty(DB_DATABASE)) throw new Error("database name is unset.")
if (isEmpty(DB_USERNAME)) throw new Error("database username is unset.")
if (isEmpty(DB_PASSWORD)) throw new Error("database password is unset.")
if (isEmpty(DB_HOST)) throw new Error("database host is unset.")
if (isNil(DB_PORT) || isNaN(DB_PORT)) throw new Error("database port is unset.")

function sqlLogger(query: string) {
  console.log(compactSql(query))
}

// See https://sequelize.org/docs/v7/databases/postgres/
export const SEQUELIZE_CONFIG: Options<PostgresDialect> = {
  dialect: PostgresDialect,
  database: DB_DATABASE,
  user: DB_USERNAME,
  password: DB_PASSWORD,
  host: DB_HOST,
  port: DB_PORT,
  ssl: DB_SSL ? { rejectUnauthorized: false } : false,
  schema: "public", // default - explicit for clarity
  logging: SEQUELIZE_LOGGING ? sqlLogger : false,
  pool: {
    max: 20,
    min: 2,
    acquire: 60_000,
    idle: 10_000,
    evict: 10_000,
  },
  define: {
    underscored: true,
    timestamps: true, // default - explicit for clarity.
    paranoid: true, // adds deleted_at column
  },
}

const db = new Sequelize(SEQUELIZE_CONFIG)

export default db