workflow:
  rules:
    - if: '$CI_PIPELINE_SOURCE == "push"'
      when: always
    - when: never

default:
  image:
    name: nixpkgs/nix-flakes:nixos-21.05

variables:
  NIX_PATH: "nixpkgs=http://nixos.org/channels/nixos-21.05/nixexprs.tar.xz"
  AWS_SHARED_CREDENTIALS_FILE: "/etc/aws/credentials"
  
stages:
  - frontend:build
  - backend:build
  - docker:build
  
node dependencies:
  stage: frontend:build
  script:
    - nix -L build -o result .#uniworxNodeDependencies
    - nix-store --export $(nix-store -qR result) > node-dependencies.nar
  before_script: &nix-before
    - install -m 0644 .gitlab-ci/nix-bootstrap.conf /etc/nix/nix.conf
    - .gitlab-ci/write-minio-creds.sh
    - .gitlab-ci/make-minio-bucket.sh
    - nix-env -f .gitlab-ci/patched-nix.nix -iE 'f: f {}'
    - cp -pr --reflink=auto -L .gitlab-ci/upload-to-cache.sh /etc/nix/upload-to-cache.sh
    - install -m 0644 .gitlab-ci/nix.conf /etc/nix/nix.conf
    - git config --global init.defaultBranch master
    - install -v -m 0700 -d ~/.ssh
    - install -v -T -m 0644 "${SSH_KNOWN_HOSTS}" ~/.ssh/known_hosts
    - install -v -T -m 0400 "${SSH_DEPLOY_KEY}" ~/.ssh/deploy && echo "IdentityFile ~/.ssh/deploy" >> ~/.ssh/config; 
    - install -v -T -m 0644 "${FONTAWESOME_NPM_AUTH_FILE}" /etc/fontawesome-token
  artifacts:
    paths:
      - node-dependencies.nar
    name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
    expire_in: "1 day"
  retry: 2
  interruptible: true

well known:
  stage: frontend:build
  script:
    - nix-store --import <node-dependencies.nar
    - nix -L build -o result .#uniworxWellKnown
    - nix-store --export $(nix-store -qR result) > well-known.nar
  before_script: *nix-before
  needs:
    - job: node dependencies
      artifacts: true
  artifacts:
    paths:
      - well-known.nar
    name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
    expire_in: "1 day"
  retry: 2
  interruptible: true

frontend:
  stage: frontend:build
  script:
    - nix-store --import <node-dependencies.nar
    - nix-store --import <well-known.nar
    - nix -L build -o result .#uniworxFrontend
    - nix-store --export $(nix-store -qR result) > frontend.nar
  before_script: *nix-before
  needs:
    - job: node dependencies
      artifacts: true
    - job: well known
      artifacts: true
  artifacts:
    paths:
      - frontend.nar
    name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
    expire_in: "1 day"
  retry: 2
  interruptible: true

backend:
  stage: backend:build
  script:
    - nix-store --import <frontend.nar
    - nix -L build -o result .#uniworxBackend
    - cp -pr --reflink=auto -L result/bin .
  before_script: *nix-before
  needs:
    - job: frontend
      artifacts: true
  artifacts:
    paths:
      - bin/
    name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
    expire_in: "1 day"
  retry: 2
  interruptible: true

demo docker:
  stage: docker:build
  script:
    - nix-store --import <backend.nar
    - nix -L build -o result .#uniworxDemoDocker
    - cp -pr --reflink=auto -L result uniworx-demo.tar.gz
  before_script: *nix-before
  needs:
    - job: backend
      artifacts: true
  artifacts:
    paths:
      - uniworx-demo.tar.gz
    name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
    expire_in: "1 day"
  retry: 2
  interruptible: true

docker:
  stage: docker:build
  script:
    - nix-store --import <backend.nar
    - nix -L build -o result .#uniworxDocker
    - cp -pr --reflink=auto -L result uniworx.tar.gz
  before_script: *nix-before
  needs:
    - job: backend
      artifacts: true
  artifacts:
    paths:
      - uniworx.tar.gz
    name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
    expire_in: "1 day"
  retry: 2
  interruptible: true