# -*- coding: utf-8 -*-
'''
### <beg-file_info>
### document_metadata:
###   - caption: "demo_composite_validation_001a"
###     dmid: "uu182upon_reproach"
###     date: created="2019-03-21 09:21:04"
###     last: lastmod="2019-03-21 09:21:04"
###     tags: validation,json,jmespath,python,jsonschema
###     author:     created="__author__"
###     filetype:   "__filetype__"
###     lastupdate: "__lastupdate__"
###     desc: |
###         * demonstrate the use of composite validation in python
###         * DEPENDENCY -- jmespath query language package
###         * DEPENDENCY -- cerberus validation package
###     seealso: |
###         * href="smartpath://mytrybits/p/trypython/lab2014/cerberus/baredemo_jmespath_mixin_conditional.py"
###     seeinstead: |
###         * __seeinstead__
### <end-file_info>
'''

## --------------------------------------
## begin_:

if('init_python'):
  import os
  import sys
  pass
  import cerberus
  import codecs
  import yaml
  import textwrap
  import jmespath
  import pprint
  pass
##endif

if(True and "sample documents"):
  aadocuments = []
  aadocuments.append(yaml.safe_load('''
      person_fname:         homer
      person_lname:         himpson
      person_age:           1
      prize_caption:        free beer for life
      prize_email:          prizes@abcbooze.com
      prize_category:       alchohol
    '''))
  aadocuments.append(yaml.safe_load('''
      person_fname:         jomer
      person_lname:         jimpson
    '''))
  aadocuments.append(yaml.safe_load('''
      person_fname:         helen
      person_lname:         himpson
      person_age:           16
      prize_caption:        free ammo for life
      prize_email:          prizes@zzzguns.com
      prize_category:       firearms
    '''))
  aadocuments.append(yaml.safe_load('''
      person_fname:         maggie
      person_lname:         himpson
      person_age:           3
      prize_caption:        free puppy
      prize_email:          prizes@123pets.com
      prize_category:       pets
      parent_name:          homer himpson
    '''))
  pass
##endif

if(True and "sample validation schemas"):
  validationrules_table = yaml.safe_load('''
    - rule_caption:     check-required-fields
      rule_vpath:       "@"
      validation_schema:
        person_fname:
          type: string
          required: true
        person_lname:
          type: string
          required: true
        person_age:
          type: string
          required: true

    - rule_caption:     check-age-range
      rule_vpath:       '@|@.person_age|{"person_age":@}'
      validation_schema:
        person_age:
          "min": 2
          "max": 120

    - rule_caption:     check-underage-minor
      rule_vpath:       '[@]|[? @.person_age < `18`]'
      validation_schema:
        prize_category:
          type: string
          allowed: ['pets','toys','candy']
        prize_email:
          type:     string
          regex:    '[\w]+@.*'

    - rule_caption:     check-for-allergies
      rule_vpath:       "@|@.person_allergies"
      validation_schema:
        person_allergies:
          required:   True
          type:       string
    ''')
  pass
##endif

if(True and "iterate"):
  vcc         =   cerberus.Validator(allow_unknown=True)
  for dataroot in aadocuments:

    print("## -------------------------------------------------------------------")
    print("## {person_fname} {person_lname}".format(**dataroot))
    pass

    for myruleset in validationrules_table:
      print("----")
      ddresult        = dict()
      ddresult.update(myruleset)
      ddresult['rule_vpath_hasdata']  = ( not jmespath.compile(myruleset['rule_vpath']).search(dataroot) is None)
      ddresult['rule_vpath_dataval']  = ( jmespath.compile(myruleset['rule_vpath']).search(dataroot) )
      pass
      if( ddresult['rule_vpath_hasdata'] ):
        vcc.schema  =   myruleset['validation_schema']
        ddresult['validation_result'] = vcc.validate(dataroot)
        ddresult['validation_errors'] = vcc.errors
      elif(True):
        ddresult['validation_result'] = None
      pprint.pprint(ddresult)
    pass

  pass
##endif