module yang-meta-types {
  namespace "urn:corenova:yang:yang-meta-types";
  prefix meta;
  yang-version 1.1;

  import ietf-yang-types { prefix yang; }
  import ietf-inet-types { prefix inet; }
  import iana-crypt-hash { prefix ianach; }
  
  organization
    "Corenova Technologies, Inc.";
  contact
    "Peter K. Lee <peter@corenova.com>";
  
  description
    "This module provides common metadata type definitions";

  revision 2016-09-14 {
    description
      "Initial revision.";
  }
  /*
   * Type Definitions
   */
  typedef meta-identifier {
    type yang:yang-identifier;
  }
  typedef title {
    type string {
      length 1..255;
    }
  }
  typedef description {
    type string;
  }
  typedef person-name {
    type string {
      length 1..255;
    }
  }
  typedef email-address {
    type string {
      pattern "[\\-_.a-zA-Z0-9]+@[\\-_.a-zA-Z0-9]+(\\.[\\-_.a-zA-Z0-9]+)*";
    }
    description
      "Valid format of an email address.";
  }
  typedef person-contact {
    type string {
      pattern '["-\w,. ]+\s*(<.+?@.+?>)?\s*(\(.+?\))?';
    }
  }
  typedef phone-number {
    type string {
      pattern "\\+?[0-9]+(-[0-9]+)*";
    }
    description
      "Valid format of a phone number.";
  }
  typedef timezone {
    type string;
  }
  typedef password {
    type ianach:crypt-hash;
  }
  typedef empty-string {
    type string {
      length 0;
    }
  }
  typedef wildcard {
    type string {
      pattern '\*';
    }
  }
  typedef semantic-version {
    type string {
      pattern '\d+\.\d+\.\d+(-.+)?';
    }
  }
  typedef semantic-version-match {
    type union {
      type semantic-version;
      type string {
        pattern '([><~^]|<=|>=)\s*\d+\.[\dx]+(\.[\dx]+)?';
      }
      type string {
        pattern '\d+\.[\dx]+(\.[\dx]+)?';
      }
      type string {
        pattern '([><]|<=|>=)\s*\d+\.[\dx]+\.[\dx]+ ([><]|<=|>=)\s*\d+\.?[\dx]*\.?[\dx]*';
      }
      // TODO: add support composite ranges with ||
    }
  }
  typedef api-version {
    type string {
      pattern '\d+\.\d+';
    }
  }
  typedef license {
    type yang:yang-identifier;
    description "TODO: should reference https://spdx.org/licenses for complete enumeration.";
  }
  typedef file-name {
    type string {
      length 0..255;
      //pattern '[\\\/\-\w\.]+'; // might be too restrictive...
    }
  }
}