import { config } from "../config"

describe("Config", () => {
	it("should build a valid development config when no environment is set", () => {
		const emptyEnv = {}
		const result = config(emptyEnv)

		expect(result).toHaveProperty("is_production", false)
		expect(result).toHaveProperty("port")
		expect(result).toHaveProperty("jwt_secret")
		expect(result).toHaveProperty("drift_home")
		expect(result).toHaveProperty("memory_db")
		expect(result).toHaveProperty("enable_admin")
		expect(result).toHaveProperty("secret_key")
		expect(result).toHaveProperty("registration_password")
		expect(result).toHaveProperty("welcome_content")
		expect(result).toHaveProperty("welcome_title")
	})

	it("should fail when building a prod environment without SECRET_KEY", () => {
		expect(() => config({ NODE_ENV: "production" })).toThrow(
			new Error("Missing environment variable: SECRET_KEY")
		)
	})

	it("should build a prod config with a SECRET_KEY", () => {
		const result = config({ NODE_ENV: "production", SECRET_KEY: "secret" })

		expect(result).toHaveProperty("is_production", true)
		expect(result).toHaveProperty("secret_key", "secret")
	})

	describe("jwt_secret", () => {
		it("should use default jwt_secret when environment is blank string", () => {
			const result = config({ JWT_SECRET: "" })

			expect(result).toHaveProperty("is_production", false)
			expect(result).toHaveProperty("jwt_secret", "myjwtsecret")
		})
	})

	describe("booleans", () => {
		it("should parse 'true' as true", () => {
			const result = config({ MEMORY_DB: "true" })

			expect(result).toHaveProperty("memory_db", true)
		})
		it("should parse 'false' as false", () => {
			const result = config({ MEMORY_DB: "false" })

			expect(result).toHaveProperty("memory_db", false)
		})
		it("should fail when it is not parseable", () => {
			expect(() => config({ MEMORY_DB: "foo" })).toThrow(
				new Error("Invalid boolean value: foo")
			)
		})
		it("should default to false when the string is empty", () => {
			const result = config({ MEMORY_DB: "" })

			expect(result).toHaveProperty("memory_db", false)
		})
	})
})