fix: update JwtService to handle default expiration and add tests for token generation

backend/src/main/kotlin/com/condado/newsletter/service/JwtService.kt

@@ -14,8 +14,10 @@ import java.util.Date
 @Service
 class JwtService(
     @Value("\${app.jwt.secret}") val secret: String,
-    @Value("\${app.jwt.expiration-ms}") val expirationMs: Long
+    @Value("\${app.jwt.expiration-ms:86400000}") expirationMsRaw: String
 ) {
+    private val expirationMs: Long = expirationMsRaw.toLongOrNull() ?: 86400000L
+
     private val signingKey by lazy {
         Keys.hmacShaKeyFor(secret.toByteArray(Charsets.UTF_8))
     }

backend/src/test/kotlin/com/condado/newsletter/service/AuthServiceTest.kt

@@ -40,7 +40,7 @@ class AuthServiceTest {
     fun should_returnValidClaims_when_jwtTokenParsed() {
         val realJwtService = JwtService(
             secret = "test-secret-key-for-testing-only-must-be-at-least-32-characters",
-            expirationMs = 86400000L
+            expirationMsRaw = "86400000"
         )
         val token = realJwtService.generateToken()
 
@@ -51,7 +51,7 @@ class AuthServiceTest {
     fun should_returnFalse_when_expiredTokenValidated() {
         val realJwtService = JwtService(
             secret = "test-secret-key-for-testing-only-must-be-at-least-32-characters",
-            expirationMs = 1L
+            expirationMsRaw = "1"
         )
         val token = realJwtService.generateToken()
 

backend/src/test/kotlin/com/condado/newsletter/service/JwtServiceTest.kt

@@ -0,0 +1,26 @@
+package com.condado.newsletter.service
+
+import io.jsonwebtoken.Jwts
+import io.jsonwebtoken.security.Keys
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class JwtServiceTest {
+
+    private val secret = "12345678901234567890123456789012"
+
+    @Test
+    fun should_generate_token_when_expiration_is_empty() {
+        val jwtService = JwtService(secret, "")
+
+        val token = jwtService.generateToken()
+
+        val claims = Jwts.parser()
+            .verifyWith(Keys.hmacShaKeyFor(secret.toByteArray(Charsets.UTF_8)))
+            .build()
+            .parseSignedClaims(token)
+            .payload
+
+        assertTrue(claims.expiration.after(claims.issuedAt))
+    }
+}

docker-compose.prod.yml

@@ -9,7 +9,7 @@ services:
       SPRING_DATASOURCE_PASSWORD: ${SPRING_DATASOURCE_PASSWORD}
       APP_PASSWORD: ${APP_PASSWORD}
       JWT_SECRET: ${JWT_SECRET}
-      JWT_EXPIRATION_MS: ${JWT_EXPIRATION_MS}
+      JWT_EXPIRATION_MS: ${JWT_EXPIRATION_MS:-86400000}
       MAIL_HOST: ${MAIL_HOST}
       MAIL_PORT: ${MAIL_PORT}
       MAIL_USERNAME: ${MAIL_USERNAME}

docker/entrypoint.sh

@@ -27,6 +27,7 @@ mkdir -p /var/log/supervisor
 export SPRING_DATASOURCE_URL=${SPRING_DATASOURCE_URL:-jdbc:postgresql://localhost:5432/${APP_DB_NAME}}
 export SPRING_DATASOURCE_USERNAME=${SPRING_DATASOURCE_USERNAME:-${APP_DB_USER}}
 export SPRING_DATASOURCE_PASSWORD=${SPRING_DATASOURCE_PASSWORD:-${APP_DB_PASSWORD}}
+export JWT_EXPIRATION_MS=${JWT_EXPIRATION_MS:-86400000}
 
 # ── Log all Spring Boot environment variables for debugging ──────────────────
 echo "========================================"
@@ -35,6 +36,7 @@ echo "========================================"
 echo "SPRING_DATASOURCE_URL=${SPRING_DATASOURCE_URL}"
 echo "SPRING_DATASOURCE_USERNAME=${SPRING_DATASOURCE_USERNAME}"
 echo "SPRING_DATASOURCE_PASSWORD=${SPRING_DATASOURCE_PASSWORD}"
+echo "JWT_EXPIRATION_MS=${JWT_EXPIRATION_MS}"
 echo "JAVA_OPTS=${JAVA_OPTS:-not set}"
 echo "OPENAI_API_KEY=${OPENAI_API_KEY:-not set}"
 echo "========================================"