local xml = require 'pl.xml'
local asserteq = require 'pl.test'.asserteq
local dump = require 'pl.pretty'.dump

-- Prosody stanza.lua style XML building

d = xml.new 'top' : addtag 'child' : text 'alice' : up() : addtag 'child' : text 'bob'

d = xml.new 'children' :
	addtag 'child' :
	addtag 'name' : text 'alice' : up() : addtag 'age' : text '5' : up() : addtag('toy',{type='fluffy'}) : up() :
	up() :
	addtag 'child':
	addtag 'name' : text 'bob' : up() : addtag 'age' : text '6' : up() : addtag('toy',{type='squeaky'})

asserteq(
xml.tostring(d,'','  '),
[[

<children>
  <child>
    <name>alice</name>
    <age>5</age>
    <toy type='fluffy'/>
  </child>
  <child>
    <name>bob</name>
    <age>6</age>
    <toy type='squeaky'/>
  </child>
</children>]])

-- Orbit-style 'xmlification'

local children,child,toy,name,age = xml.tags 'children, child, toy, name, age'

d1 = children {
    child {name 'alice', age '5', toy {type='fluffy'}},
    child {name 'bob', age '6', toy {type='squeaky'}}
}

assert(xml.compare(d,d1))

-- or we can use a template document to convert Lua data to LOM

templ = child {name '$name', age '$age', toy{type='$toy'}}

d2 = children(templ:subst{
    {name='alice',age='5',toy='fluffy'},
    {name='bob',age='6',toy='squeaky'}
})

assert(xml.compare(d1,d2))

-- Parsing Google Weather service results --

local joburg = [[
<xml_api_reply version='1'>
  <weather module_id='0' tab_id='0' mobile_zipped='1' section='0' row='0' mobile_row='0'>
    <forecast_information>
      <city data='Johannesburg, Gauteng'/>
      <postal_code data='Johannesburg,ZA'/>
      <latitude_e6 data=''/>
      <longitude_e6 data=''/>
      <forecast_date data='2010-10-02'/>
      <current_date_time data='2010-10-02 18:30:00 +0000'/>
      <unit_system data='US'/>
    </forecast_information>
    <current_conditions>
      <condition data='Clear'/>
      <temp_f data='75'/>
      <temp_c data='24'/>
      <humidity data='Humidity: 19%'/>
      <icon data='/ig/images/weather/sunny.gif'/>
      <wind_condition data='Wind: NW at 7 mph'/>
    </current_conditions>
    <forecast_conditions>
      <day_of_week data='Sat'/>
      <low data='60'/>
      <high data='89'/>
      <icon data='/ig/images/weather/sunny.gif'/>
      <condition data='Clear'/>
    </forecast_conditions>
    <forecast_conditions>
      <day_of_week data='Sun'/>
      <low data='53'/>
      <high data='86'/>
      <icon data='/ig/images/weather/sunny.gif'/>
      <condition data='Clear'/>
    </forecast_conditions>
    <forecast_conditions>
      <day_of_week data='Mon'/>
      <low data='57'/>
      <high data='87'/>
      <icon data='/ig/images/weather/sunny.gif'/>
      <condition data='Clear'/>
    </forecast_conditions>
    <forecast_conditions>
      <day_of_week data='Tue'/>
      <low data='60'/>
      <high data='84'/>
      <icon data='/ig/images/weather/sunny.gif'/>
      <condition data='Clear'/>
    </forecast_conditions>
  </weather>
</xml_api_reply>

]]

local d = xml.parse(joburg)

function match(t,xpect)
    local res,ret = d:match(t)
    asserteq(res,xpect)
end

t1 = [[
  <weather>
    <current_conditions>
      <condition data='$condition'/>
      <temp_c data='$temp'/>
    </current_conditions>
  </weather>
]]

match(t1,{
  condition = "Clear",
  temp = "24",
} )

t2 = [[
  <weather>
    {{<forecast_conditions>
      <day_of_week data='$day'/>
      <low data='$low'/>
      <high data='$high'/>
      <condition data='$condition'/>
    </forecast_conditions>}}
  </weather>
]]

match(t2,{
  {
    low = "60",
    high = "89",
    day = "Sat",
    condition = "Clear",
  },
  {
    low = "53",
    high = "86",
    day = "Sun",
    condition = "Clear",
  },
  {
    low = "57",
    high = "87",
    day = "Mon",
    condition = "Clear",
  },
  {
    low = "60",
    high = "84",
    day = "Tue",
    condition = "Clear",
  }
})

config = [[
<config>
    <alpha>1.3</alpha>
    <beta>10</beta>
    <name>bozo</name>
</config>
]]
d,err = xml.parse(config)
if not d then print(err); os.exit(1) end


-- can match against wildcard tag names (end with -)
-- can be names
match([[
<config>
    {{<key->$value</key->}}
</config>
]],{
  {key="alpha", value = "1.3"},
  {key="beta", value = "10"},
  {key="name",value = "bozo"},
})

-- can be numerical indices
match([[
<config>
    {{<1->$2</1->}}
</config>
]],{
  {"alpha","1.3"},
  {"beta","10"},
  {"name","bozo"},
})

-- _ is special; means 'this value is key of captured table'
match([[
<config>
    {{<_->$1</_->}}
</config>
]],{
  alpha = {"1.3"},
  beta = {"10"},
  name = {"bozo"},
})

-- the numerical index 0 is special: a capture of {[0]=val} becomes simply the value val
match([[
<config>
    {{<_->$0</_->}}
</config>
]],{
  alpha = "1.3",
  name = "bozo",
  beta = "10"
})

-- this can of course also work with attributes, but then we don't want to collapse!

config = [[
<config>
    <alpha type='number'>1.3</alpha>
    <beta type='number'>10</beta>
    <name type='string'>bozo</name>
</config>
]]
d,err = xml.parse(config)
if not d then print(err); os.exit(1) end

match([[
<config>
    {{<_- type='$1'>$2</_->}}
</config>
]],{
  alpha = {"number","1.3"},
  beta = {"number","10"},
  name = {"string","bozo"},
})

d,err = xml.parse [[

<configuremap>
  <configure name="NAME" value="ImageMagick"/>
  <configure name="LIB_VERSION" value="0x651"/>
  <configure name="LIB_VERSION_NUMBER" value="6,5,1,3"/>
  <configure name="RELEASE_DATE" value="2009-05-01"/>
  <configure name="VERSION" value="6.5.1"/>
  <configure name="CC" value="vs7"/>
  <configure name="HOST" value="windows-unknown-linux-gnu"/>
  <configure name="DELEGATES" value="bzlib freetype jpeg jp2 lcms png tiff x11 xml wmf zlib"/>
  <configure name="COPYRIGHT" value="Copyright (C) 1999-2009 ImageMagick Studio LLC"/>
  <configure name="WEBSITE" value="http://www.imagemagick.org"/>

</configuremap>
]]
if not d then print(err); os.exit(1) end
--xml.debug = true

res,err = d:match [[
<configuremap>
   {{<configure name="$_" value="$0"/>}}
</configuremap>
]]

asserteq(res,{
  HOST = "windows-unknown-linux-gnu",
  COPYRIGHT = "Copyright (C) 1999-2009 ImageMagick Studio LLC",
  NAME = "ImageMagick",
  LIB_VERSION = "0x651",
  VERSION = "6.5.1",
  RELEASE_DATE = "2009-05-01",
  WEBSITE = "http://www.imagemagick.org",
  LIB_VERSION_NUMBER = "6,5,1,3",
  CC = "vs7",
  DELEGATES = "bzlib freetype jpeg jp2 lcms png tiff x11 xml wmf zlib"
})

-- short excerpt from
-- /usr/share/mobile-broadband-provider-info/serviceproviders.xml

d = xml.parse [[
<serviceproviders format="2.0">
<country code="za">
	<provider>
		<name>Cell-c</name>
		<gsm>
			<network-id mcc="655" mnc="07"/>
			<apn value="internet">
				<username>Cellcis</username>
				<dns>196.7.0.138</dns>
				<dns>196.7.142.132</dns>
			</apn>
		</gsm>
	</provider>
	<provider>
		<name>MTN</name>
		<gsm>
			<network-id mcc="655" mnc="10"/>
			<apn value="internet">
				<dns>196.11.240.241</dns>
				<dns>209.212.97.1</dns>
			</apn>
		</gsm>
	</provider>
	<provider>
		<name>Vodacom</name>
		<gsm>
			<network-id mcc="655" mnc="01"/>
			<apn value="internet">
				<dns>196.207.40.165</dns>
				<dns>196.43.46.190</dns>
			</apn>
			<apn value="unrestricted">
				<name>Unrestricted</name>
				<dns>196.207.32.69</dns>
				<dns>196.43.45.190</dns>
			</apn>
		</gsm>
	</provider>
	<provider>
		<name>Virgin Mobile</name>
		<gsm>
			<apn value="vdata">
				<dns>196.7.0.138</dns>
				<dns>196.7.142.132</dns>
			</apn>
		</gsm>
	</provider>
</country>

</serviceproviders>
]]

res = d:match [[
    <serviceproviders>
    {{<country code="$_">
        {{<provider>
            <name>$0</name>
        </provider>}}
    </country>}}
    </serviceproviders>
]]

asserteq(res,{
  za = {
    "Cell-c",
    "MTN",
    "Vodacom",
    "Virgin Mobile"
  }
})

res = d:match [[
<serviceproviders>
 <country code="$country">
   <provider>
     <name>$name</name>
     <gsm>
      <apn value="$apn">
         <dns>196.43.46.190</dns>
      </apn>
     </gsm>
   </provider>
 </country>
</serviceproviders>
]]

asserteq(res,{
  name = "Vodacom",
  country = "za",
  apn = "internet"
})

-- can always use xmlification to generate your templates...

local SP, country, provider, gsm, apn, dns = xml.tags 'serviceprovider, country, provider, gsm, apn, dns'

t = SP{country{code="$country",provider{
   name '$name', gsm{apn {value="$apn",dns '196.43.46.190'}}
   }}}

print(xml.tostring(t,' ','  '))