impress-2020/deploy/playbooks/deploy.yml

---
- name: Deploy impress-2020 from the current local version
  hosts: webserver
  vars:
    skip_build: no # Can override this by running `yarn deploy-skip-build`
    local_app_root: "{{ playbook_dir  }}/../.."
  tasks:
    # For our deployment, our server resources are more constrained than our
    # dev machine, and builds are an expensive uncommon RAM & CPU spike. Let's
    # use our local machine for it! (I found that, running remotely, 2GB RAM
    # was not enough to build impress-2020 😅)
    - name: Run `yarn build` locally to build the current version
      delegate_to: localhost
      command:
        chdir: "{{ local_app_root }}"
        cmd: yarn build
      when: not skip_build

    - name: Generate a version name from the current timestamp
      command: date '+%Y-%m-%dT%H:%M:%S'
      register: new_app_version

    - name: Print out the new version name
      debug:
        msg: "Deploying new version: {{ new_app_version.stdout }}"

    - name: Save new remote folder path to a variable
      set_fact:
        remote_app_root: "/srv/impress-2020/versions/{{ new_app_version.stdout }}"

    - name: Create new remote folder for the new version
      file:
        path: "{{ remote_app_root }}"
        state: directory

    - name: Copy local app's source files to new remote folder
      ansible.posix.synchronize:
        src: "{{ local_app_root }}"
        dest: "{{ remote_app_root }}"
        rsync_opts:
          - "--exclude=.git"
          - "--filter=':- .gitignore'"

    - name: Copy local app's build files to new remote folder
      ansible.posix.synchronize:
        src: "{{ local_app_root }}/build"
        dest: "{{ remote_app_root }}/build"

    - name: Copy local app's .env secrets file to new remote folder
      copy:
        src: "{{ local_app_root }}/.env"
        dest: "{{ remote_app_root }}"

    - name: Run `yarn install` to install dependencies remotely
      command:
        chdir: "{{ remote_app_root }}"
        cmd: yarn install

    - name: Find older versions to clean up
      # Print out all but the last 5 versions
      command:
        chdir: /srv/impress-2020/versions
        cmd: bash -c 'ls | head -n -5'
      register: versions_to_clean_up

    - name: Clean up older versions
      file:
        path: "/srv/impress-2020/versions/{{ item }}"
        state: absent
      with_items: "{{ versions_to_clean_up.stdout_lines }}"