---
- name: Add imap_sieve to mail_plugins for dovecot
  lineinfile:
    path: /etc/dovecot/conf/imap_mail_plugins.conf
    regex: "^mail_plugins = (?!.*imap_sieve)(.*)$"
    line: "mail_plugins = \\1 imap_sieve"
    backrefs: true
  notify:
    - "directadmin : Ensure Dovecot custom for custombuild is present"
    - "directadmin : Persist mail plugins"
    - "directadmin : Restart Dovecot"

- name: Configure plusaddressing for Dovecot
  copy:
    dest: /etc/dovecot/conf.d/subaddressing.conf
    content: |
      recipient_delimiter = +
      lmtp_save_to_detail_mailbox = no
      lda_mailbox_autocreate = yes
      lda_mailbox_autosubscribe = yes
  notify:
    - "directadmin : Restart Dovecot"

- name: Configure imap_sieve for Dovecot
  copy:
    dest: /etc/dovecot/conf.d/99-imap-sieve.conf
    content: |
      plugin {
        sieve_plugins = sieve_imapsieve sieve_extprograms

        # From elsewhere to Spam folder
        imapsieve_mailbox1_name = Spam
        imapsieve_mailbox1_causes = COPY
        imapsieve_mailbox1_before = file:/usr/local/bin/dovecot-sieve/report-spam.sieve

        # From Spam folder to elsewhere
        imapsieve_mailbox2_name = *
        imapsieve_mailbox2_from = Spam
        imapsieve_mailbox2_causes = COPY
        imapsieve_mailbox2_before = file:/usr/local/bin/dovecot-sieve/report-ham.sieve

        sieve_pipe_bin_dir = /usr/local/bin/dovecot-sieve

        sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment
      }
  notify:
    - "directadmin : Restart Dovecot"

- name: Ensure dovecot-sieve script directory is present
  file:
    path: /usr/local/bin/dovecot-sieve
    state: directory
    owner: mail

- name: Create report-spam script
  copy:
    dest: /usr/local/bin/dovecot-sieve/report-spam.sieve 
    content: |
      require ["vnd.dovecot.pipe", "copy", "imapsieve", "environment", "variables"];

      if environment :matches "imap.user" "*" {
        set "username" "${1}";
      }

      pipe :copy "sa-learn-spam.sh" [ "${username}" ]; 
  notify:
    - "directadmin : Compile and fix permissions report-spam script"

- name: Create report-ham script
  copy:
    dest: /usr/local/bin/dovecot-sieve/report-ham.sieve 
    content: |
      require ["vnd.dovecot.pipe", "copy", "imapsieve", "environment", "variables"];

      if environment :matches "imap.mailbox" "*" {
        set "mailbox" "${1}";
      }

      if string "${mailbox}" "Trash" {
        stop;
      }

      if environment :matches "imap.user" "*" {
        set "username" "${1}";
      }

      pipe :copy "sa-learn-ham.sh" [ "${username}" ];
  notify:
    - "directadmin : Compile and fix permissions report-ham script"

- name: Create spam learning script
  copy:
    dest: /usr/local/bin/dovecot-sieve/sa-learn-spam.sh
    content: |
      #!/bin/bash
      # you can also use tcp/ip here, consult spamc(1)
      inputmail=`/usr/bin/cat`
      ddomain=`/usr/bin/echo "${1}"| /usr/bin/cut -d'@' -f2`
      dusername=`/usr/bin/egrep "^${ddomain}:" /etc/virtual/domainowners| /usr/bin/cut -d' ' -f2`
      exec /usr/bin/spamc -u ${dusername} -L spam <<< "${inputmail}"
    mode: "0755"

- name: Create ham learning script
  copy:
    dest: /usr/local/bin/dovecot-sieve/sa-learn-ham.sh
    content: |
      #!/bin/bash
      # you can also use tcp/ip here, consult spamc(1)
      inputmail=`/usr/bin/cat`
      ddomain=`/usr/bin/echo "${1}"| /usr/bin/cut -d'@' -f2`
      dusername=`/usr/bin/egrep "^${ddomain}:" /etc/virtual/domainowners| /usr/bin/cut -d' ' -f2`
      exec /usr/bin/spamc -u ${dusername} -L ham <<< "${inputmail}"
    mode: "0755"