---
- name: get id of existing selfsigned interim certificate
  ansible.builtin.shell: cat /var/lib/acme/.selfsigned-interim-cert || true
  changed_when: false
  check_mode: false
  register: existing_selfsigned_interim_cert_id

- name: set existing_selfsigned_interim_cert_id variable
  ansible.builtin.set_fact:
    existing_selfsigned_interim_cert_id: "{{ existing_selfsigned_interim_cert_id.stdout }}"

- name: check if selfsigned interim certificate does exist
  ansible.builtin.stat:
    path: "/var/lib/acme/certs/{{ existing_selfsigned_interim_cert_id }}"
  register: existing_selfsigned_interim_cert_stat

- name: create selfsigned interim certificate
  when: not existing_selfsigned_interim_cert_id or not existing_selfsigned_interim_cert_stat.stat.exists
  block:
  - name: create temporary directory
    ansible.builtin.tempfile:
      path: /var/lib/acme/tmp
      prefix: selfsigned-interim-cert-
      state: directory
    register: tmpdir

  - name: set tmpdir variable
    ansible.builtin.set_fact:
      tmpdir: "{{ tmpdir.path }}"

  - name: generate private key for selfsigned interim certificate
    ansible.builtin.openssl_privatekey:
      path: "{{ tmpdir }}/privkey"
      mode: 0600

  - name: generate csr for selfsigned interim certificate
    community.crypto.openssl_csr_pipe:
      privatekey_path: "{{ tmpdir }}/privkey"
      common_name: "{{ ansible_fqdn }}"
    register: selfsigned_interim_cert_req


  ### this is needed because strftime filter in ansible is exceptionally stupid
  ### see: https://github.com/ansible/ansible/issues/39835
  - name: get remote date-time 10s ago
    ansible.builtin.command: date -d '10 seconds ago' -u '+%Y%m%d%H%M%SZ'
    register: remote_datetime_10sago

  - name: get remote date-time now
    ansible.builtin.command: date -u '+%Y%m%d%H%M%SZ'
    register: remote_datetime_now

  - name: generate selfsigned interim certificate
    community.crypto.x509_certificate_pipe:
      privatekey_path: "{{ tmpdir }}/privkey"
      csr_content: "{{ selfsigned_interim_cert_req.csr }}"
      provider: selfsigned
      ## make sure the certificate is not valid anymore to force acmetool to create a new cert
      selfsigned_not_before: "{{ remote_datetime_10sago.stdout }}"
      selfsigned_not_after: "{{ remote_datetime_now.stdout }}"
    register: selfsigned_interim_cert

  - name: install selfsigned interim certificate and fullchain
    loop:
    - cert
    - fullchain
    ansible.builtin.copy:
      content: "{{ selfsigned_interim_cert.certificate }}"
      dest: "{{ tmpdir }}/{{ item }}"

  - name: create additional empty files
    loop:
    - chain
    - selfsigned
    ansible.builtin.copy:
      content: ""
      dest: "{{ tmpdir }}/{{ item }}"

  ### TODO: remove this once acmetool respects it's own storage layout
  ###       see: https://github.com/hlandau/acme/blob/master/_doc/SCHEMA.md#temporary-use-of-self-signed-certificates
  - name: generate fake url file
    ansible.builtin.copy:
      content: "https://acme.example.com/acme/cert/self-signed\n"
      dest: "{{ tmpdir }}/url"

  - name: get key id
    ansible.builtin.shell: "openssl x509 -in '{{ tmpdir }}/cert' -noout -pubkey | openssl enc -base64 -d | openssl sha256 -binary | base32 | tr -d '=' | tr '[:upper:]' '[:lower:]'"
    register: selfsigned_interim_key_id

  - name: set selfsigned_interim_key_id variable
    ansible.builtin.set_fact:
      selfsigned_interim_key_id: "{{ selfsigned_interim_key_id.stdout }}"

  - name: create directory for private key of selfsigned interim certificate
    ansible.builtin.file:
      path: "/var/lib/acme/keys/{{ selfsigned_interim_key_id }}"
      state: directory
      mode: 0700

  - name: move private key to its directory
    ansible.builtin.command: "mv '{{ tmpdir }}/privkey' '/var/lib/acme/keys/{{ selfsigned_interim_key_id }}/privkey'"

  - name: create symlink to privkey
    ansible.builtin.file:
      src: "../../keys/{{ selfsigned_interim_key_id }}/privkey"
      dest: "{{ tmpdir }}/privkey"
      state: link

  # - name: get certificate id
  #   ansible.builtin.shell: "openssl x509 -in '{{ tmpdir }}/cert' -outform der | openssl sha256 -binary | base32 | tr -d '=' | tr '[:upper:]' '[:lower:]'"
  #   register: selfsigned_interim_cert_id

  # - name: set selfsigned_interim_cert_id variable
  #   ansible.builtin.set_fact:
  #     selfsigned_interim_cert_id: "selfsigned-{{ selfsigned_interim_cert_id.stdout }}"

  ### TODO: replace with the above once acmetool respects it's own storage layout
  ###       see: https://github.com/hlandau/acme/blob/master/_doc/SCHEMA.md#temporary-use-of-self-signed-certificates
  - name: get certificate id
    ansible.builtin.shell: "cat '{{ tmpdir }}/url' | tr -d '\n' | openssl sha256 -binary | base32 | tr -d '=' | tr '[:upper:]' '[:lower:]'"
    register: selfsigned_interim_cert_id

  - name: set selfsigned_interim_cert_id variable
    ansible.builtin.set_fact:
      selfsigned_interim_cert_id: "{{ selfsigned_interim_cert_id.stdout }}"

  - name: set permissions for selfsigned interim certificate directory
    ansible.builtin.file:
      path: "{{ tmpdir }}"
      mode: 0755
      state: directory

  - name: move selfsigned interim certificate directory into place
    ansible.builtin.command: "mv '{{ tmpdir }}' '/var/lib/acme/certs/{{ selfsigned_interim_cert_id }}'"

  - name: write cert-id of selfsigned interim certificate to state directory
    ansible.builtin.copy:
      content: "{{ selfsigned_interim_cert_id }}"
      dest: /var/lib/acme/.selfsigned-interim-cert

  rescue:
  - name: remove temporary directory for selfsigned interim certificate
    ansible.builtin.file:
      path: "{{ tmpdir }}"
      state: absent