stages:
  - build
  - push
  - deploy

variables:
  DOCKER_DRIVER: overlay2
  DOCKER_IMAGE_BACKEND: $CI_REGISTRY/$CI_PROJECT_PATH/backend
  DOCKER_IMAGE_FRONTEND: $CI_REGISTRY/$CI_PROJECT_PATH/frontend
  GITOPS_REPO: "https://gitlab.com/mauuldya/datasiswa-workflow/datasiswa-gitops.git"

# ==========================================
# 🔧 BEFORE SCRIPT (GLOBAL)
# ==========================================
before_script:
  - echo "🔑 Logging in to GitLab Container Registry..."
  - echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER $CI_REGISTRY --password-stdin

# ==========================================
# 🔹 BUILD BACKEND IMAGE
# ==========================================
build_backend:
  stage: build
  image: docker:latest
  services:
    - docker:dind
  script:
    - echo "🔧 Building backend image..."
    - docker build -t "$DOCKER_IMAGE_BACKEND:latest" -t "$DOCKER_IMAGE_BACKEND:$CI_COMMIT_SHORT_SHA" ./backend
  only:
    - main

# ==========================================
# 🔹 BUILD FRONTEND IMAGE
# ==========================================
build_frontend:
  stage: build
  image: docker:latest
  services:
    - docker:dind
  script:
    - echo "🔧 Building frontend image..."
    - docker build -t "$DOCKER_IMAGE_FRONTEND:latest" -t "$DOCKER_IMAGE_FRONTEND:$CI_COMMIT_SHORT_SHA" ./frontend
  only:
    - main

# ==========================================
# 🔹 PUSH BOTH IMAGES
# ==========================================
push_images:
  stage: push
  image: docker:latest
  services:
    - docker:dind
  needs:
    - build_backend
    - build_frontend
  script:
    - echo "🚀 Pushing both images to GitLab Registry..."
    - docker push "$DOCKER_IMAGE_BACKEND:latest"
    - docker push "$DOCKER_IMAGE_BACKEND:$CI_COMMIT_SHORT_SHA"
    - docker push "$DOCKER_IMAGE_FRONTEND:latest"
    - docker push "$DOCKER_IMAGE_FRONTEND:$CI_COMMIT_SHORT_SHA"
  only:
    - main

# ==========================================
# 🔹 DEPLOY TO DEV (GitOps)
# ==========================================
deploy_dev:
  stage: deploy
  image: alpine:3.19
  needs: [push_images]
  variables:
    KUSTOMIZE_PATH: "k8s/overlays/dev"
  before_script:
    - apk add --no-cache git bash sed
    - git config --global user.email "gitlab-ci@example.com"
    - git config --global user.name "GitLab CI Bot"
  script:
    - echo "📦 Cloning GitOps repo..."
    - git clone "https://$GITOPS_USERNAME:$GITOPS_TOKEN@gitlab.com/mauuldya/datasiswa-workflow/datasiswa-gitops.git"
    - cd datasiswa-gitops
    - echo "🛠 Updating DEV image tags..."
    - sed -i "s|registry.gitlab.com/.*/backend:.*|$DOCKER_IMAGE_BACKEND:$CI_COMMIT_SHORT_SHA|g" "$KUSTOMIZE_PATH/patch-deployment.yaml"
    - sed -i "s|registry.gitlab.com/.*/frontend:.*|$DOCKER_IMAGE_FRONTEND:$CI_COMMIT_SHORT_SHA|g" "$KUSTOMIZE_PATH/patch-deployment.yaml"
    - git add .
    - git commit -m "🔄 Update DEV images to $CI_COMMIT_SHORT_SHA [skip ci]" || echo "⚠️ No changes to commit"
    - git push "https://$GITOPS_USERNAME:$GITOPS_TOKEN@gitlab.com/mauuldya/datasiswa-workflow/datasiswa-gitops.git" dev
  environment:
    name: dev
  only:
    - main

# ==========================================
# 🔹 DEPLOY TO STAGING
# ==========================================
deploy_staging:
  stage: deploy
  image: alpine:3.19
  variables:
    KUSTOMIZE_PATH: "k8s/overlays/staging"
  before_script:
    - apk add --no-cache git bash sed
    - git config --global user.email "gitlab-ci@example.com"
    - git config --global user.name "GitLab CI Bot"
  script:
    - echo "📦 Cloning GitOps repo..."
    - git clone "https://$GITOPS_USERNAME:$GITOPS_TOKEN@gitlab.com/mauuldya/datasiswa-workflow/datasiswa-gitops.git"
    - cd datasiswa-gitops
    - echo "🛠 Updating STAGING image tags..."
    - sed -i "s|registry.gitlab.com/.*/backend:.*|$DOCKER_IMAGE_BACKEND:$CI_COMMIT_SHORT_SHA|g" "$KUSTOMIZE_PATH/patch-deployment.yaml"
    - sed -i "s|registry.gitlab.com/.*/frontend:.*|$DOCKER_IMAGE_FRONTEND:$CI_COMMIT_SHORT_SHA|g" "$KUSTOMIZE_PATH/patch-deployment.yaml"
    - git add .
    - git commit -m "🔄 Update STAGING images to $CI_COMMIT_SHORT_SHA [skip ci]" || echo "⚠️ No changes to commit"
    - git push "https://$GITOPS_USERNAME:$GITOPS_TOKEN@gitlab.com/mauuldya/datasiswa-workflow/datasiswa-gitops.git" staging
  environment:
    name: staging
  only:
    - staging

# ==========================================
# 🔹 DEPLOY TO PRODUCTION
# ==========================================
deploy_production:
  stage: deploy
  image: alpine:3.19
  variables:
    KUSTOMIZE_PATH: "k8s/overlays/production"
  before_script:
    - apk add --no-cache git bash sed
    - git config --global user.email "gitlab-ci@example.com"
    - git config --global user.name "GitLab CI Bot"
  script:
    - echo "📦 Cloning GitOps repo..."
    - git clone "https://$GITOPS_USERNAME:$GITOPS_TOKEN@gitlab.com/mauuldya/datasiswa-workflow/datasiswa-gitops.git"
    - cd datasiswa-gitops
    - echo "🛠 Updating PRODUCTION image tags..."
    - sed -i "s|registry.gitlab.com/.*/backend:.*|$DOCKER_IMAGE_BACKEND:$CI_COMMIT_SHORT_SHA|g" "$KUSTOMIZE_PATH/patch-deployment.yaml"
    - sed -i "s|registry.gitlab.com/.*/frontend:.*|$DOCKER_IMAGE_FRONTEND:$CI_COMMIT_SHORT_SHA|g" "$KUSTOMIZE_PATH/patch-deployment.yaml"
    - git add .
    - git commit -m "🚀 Deploy PRODUCTION $CI_COMMIT_SHORT_SHA [skip ci]" || echo "⚠️ No changes to commit"
    - git push "https://$GITOPS_USERNAME:$GITOPS_TOKEN@gitlab.com/mauuldya/datasiswa-workflow/datasiswa-gitops.git" main
  environment:
    name: production
  only:
    - production