#!/bin/bash

#################
# PRELIMINARIES #
#################

# Required software:
# wget, unzip, libxml2-utils, sed, patch, cat

# Create some temporary work space
mkdir tmp
cd tmp

# Download DDI-L v3.2 specifications
wget http://www.ddialliance.org/Specification/DDI-Lifecycle/3.2/DDI_3_2_2014-05-15.zip

# unzip
unzip DDI_3_2_2014-05-15.zip

# Copy schemas closer to working directory for convenience
cp -r DDI_3_2_2014-02-05/DDI_3_2_2014-05-15_Documentation_XMLSchema/XMLSchema .

#######################
# PATCHING THE SCHEMA #
#######################

# Get the patch
wget http://www.pastebucket.com/paste/download/72481

# Need some byte-level juggling here due to CRLF line-endings...

# Add a trailing CRLF to the patch file
sed -e '$s/$/\r\n/' -i 72481

# Verify that the patch works.
# Here --binary is needed because the file and the patch have CRLF line-endings.
patch --dry-run --binary --verbose XMLSchema/reusable.xsd <72481

# Patch the schema
patch --binary --verbose XMLSchema/reusable.xsd <72481

######################
# TESTING THE SCHEMA #
######################

# Verify the libxml2 version
xmllint --version
# xmllint: using libxml version 20901

# test case valid-1

cat >test-valid1.xml <<EOF
<?xml version="1.0" encoding="utf-8"?>
<ddi:DDIInstance xmlns:ddi="ddi:instance:3_2" xmlns:r="ddi:reusable:3_2">
  <!-- Has both -->
  <r:Agency>acme.org</r:Agency>
  <r:ID>ddi_instance</r:ID>
  <r:Version>1</r:Version>
  <r:URN>urn:ddi:acme.org:ddi_instance:1</r:URN>
</ddi:DDIInstance>
EOF

xmllint --noout -schema XMLSchema/instance.xsd test-valid1.xml
# test-valid1.xml validates

# test case valid-2

cat >test-valid2.xml <<EOF
<?xml version="1.0" encoding="utf-8"?>
<ddi:DDIInstance xmlns:ddi="ddi:instance:3_2" xmlns:r="ddi:reusable:3_2">
  <!-- Has only Agency/ID/Version -->
  <r:Agency>acme.org</r:Agency>
  <r:ID>ddi_instance</r:ID>
  <r:Version>1</r:Version>
</ddi:DDIInstance>
EOF

xmllint --noout -schema XMLSchema/instance.xsd test-valid2.xml
# test-valid2.xml validates

# test case valid-3

cat >test-valid3.xml <<EOF
<?xml version="1.0" encoding="utf-8"?>
<ddi:DDIInstance xmlns:ddi="ddi:instance:3_2" xmlns:r="ddi:reusable:3_2">
  <!-- Has only URN -->
  <r:URN>urn:ddi:acme.org:ddi_instance:1</r:URN>
</ddi:DDIInstance>
EOF

xmllint --noout -schema XMLSchema/instance.xsd test-valid3.xml
# test-valid3.xml validates

# test case invalid-1

cat >test-invalid1.xml <<EOF
<?xml version="1.0" encoding="utf-8"?>
<ddi:DDIInstance xmlns:ddi="ddi:instance:3_2" xmlns:r="ddi:reusable:3_2">
  <!-- Has neither -->
</ddi:DDIInstance>
EOF

xmllint --noout -schema XMLSchema/instance.xsd test-invalid1.xml
# test-invalid1.xml fails to validate

# test case invalid-2

cat >test-invalid2.xml <<EOF
<?xml version="1.0" encoding="utf-8"?>
<ddi:DDIInstance xmlns:ddi="ddi:instance:3_2" xmlns:r="ddi:reusable:3_2">
  <!-- Has double Agency/ID/Version -->
  <r:Agency>acme.org</r:Agency>
  <r:ID>ddi_instance1</r:ID>
  <r:Version>1</r:Version>
  <r:Agency>acme.org</r:Agency>
  <r:ID>ddi_instance2</r:ID>
  <r:Version>1</r:Version>
</ddi:DDIInstance>
EOF

xmllint --noout -schema XMLSchema/instance.xsd test-invalid2.xml
# test-invalid2.xml fails to validate

# test case invalid-3

cat >test-invalid3.xml <<EOF
<?xml version="1.0" encoding="utf-8"?>
<ddi:DDIInstance xmlns:ddi="ddi:instance:3_2" xmlns:r="ddi:reusable:3_2">
  <!-- Has double URN -->
  <r:URN>urn:ddi:acme.org:ddi_instance1:1</r:URN>
  <r:URN>urn:ddi:acme.org:ddi_instance2:1</r:URN>
</ddi:DDIInstance>
EOF

xmllint --noout -schema XMLSchema/instance.xsd test-invalid3.xml
# test-invalid3.xml fails to validate