<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<!--

By default the bootstrap will use ~/.m2/repository as the integration repository but you can define the integration repository by 
specifying a property on the command line:

ant -Dmaven.repo.local=/my/integration/repository

Those familiar with Maven will note this is the same way the local repository can be set from the command-line. This facilitates
having a set of builds converge on the same repository for integration purposes.

TODO:
- Ant Tasks for Modello (generally useful and will greatly shorten the script)
- Ant Tasks for Plexus Component Descriptors (generally useful and will allow us to eliminate the hand-coded descriptors)

-->

<project default="all" basedir="." xmlns:artifact="urn:maven-artifact-ant">

  <target name="initTaskDefs">
  	<xmlproperty file="pom.xml" prefix="pom.xml" />
    <path id="maven-ant-tasks.classpath" path="maven-ant-tasks-2.1-SNAPSHOT.jar"/>
    <typedef resource="org/apache/maven/artifact/ant/antlib.xml" uri="urn:maven-artifact-ant" classpathref="maven-ant-tasks.classpath"/>
  </target>

  <target name="isMavenHomeSet" depends="initTaskDefs">
    <property environment="env"/>
    <condition property="maven.home" value="${env.M2_HOME}">
      <isset property="env.M2_HOME"/>
    </condition>
    <fail unless="maven.home" message="You must set the M2_HOME environment variable or specify a maven.home property to this Ant script"/>
  </target>

  <target name="init" depends="isMavenHomeSet">
    <xmlproperty prefix="pom" file="pom.xml"/>    
    <basename file="${maven.home}" property="maven.home.basename"/>
    <dirname file="${maven.home}" property="maven.home.dirname"/>
    <!-- Initialize properties -->
    <property name="maven.home.basename.expected" value="apache-maven-${pom.project.version}"/>
    <property name="maven.assembly" location="maven-distribution/target/${maven.home.basename.expected}-bin.zip"/>
    <property name="maven.repo.local" value="${user.home}/.m2/repository"/>
    <property name="surefire.useFile" value="true"/>    
    <echo>maven.home = ${maven.home}</echo>
  </target>

  <target name="clean-bootstrap" description="cleans up generated bootstrap classes">
    <delete dir="bootstrap"/>
  </target>

  <target name="pull" depends="init" unless="skip.pull">    
    <property name="verbose" value="false"/>    
    <!-- Pull the dependencies that Maven needs to build -->
    <copy file="pom.xml" tofile="dependencies.xml"/>
    <replace file="${basedir}/dependencies.xml" token="&lt;!--start--&gt;" value="&lt;!--"/>
    <replace file="${basedir}/dependencies.xml" token="&lt;!--end--&gt;" value="--&gt;"/>
    <artifact:pom file="${basedir}/dependencies.xml" id="pom"/>                                                                                                     
    <artifact:dependencies pathId="pom.pathid" filesetId="pom.fileset" verbose="${verbose}" useScope="compile">
       <localRepository path="${maven.repo.local}"/>
       <pom refid="pom"/>                                                                                                                                       
    </artifact:dependencies>      
    <delete file="${basedir}/dependencies.xml"/>
    
    <!-- Pull the dependencies for Modello -->
    <artifact:dependencies pathId="modello.pathid" filesetId="modello.fileset" verbose="${verbose}">
       <localRepository path="${maven.repo.local}"/>
       <dependency groupId="org.codehaus.modello" artifactId="modello-maven-plugin" version="1.0-alpha-17"/>                                                                                                                                      
    </artifact:dependencies>          
  </target>

  <target name="generate-sources" depends="pull" description="generates Java sources from Modello mdo model files">
    <mkdir dir="bootstrap/target"/>
    <mkdir dir="bootstrap/target/generated-sources"/>

    <macrodef name="modello-single-mode">
      <attribute name="file"/>
      <attribute name="mode"/>
      <attribute name="version"/>
      <sequential>
        <java fork="fork" classname="org.codehaus.modello.ModelloCli" failonerror="true">
          <classpath refid="modello.pathid"/>
          <arg file="@{file}"/>
          <arg value="@{mode}"/>
          <arg file="bootstrap/target/generated-sources"/>
          <arg value="@{version}"/>
          <arg value="false"/>
        </java>
      </sequential>
    </macrodef>

    <macrodef name="modello">
      <attribute name="file"/>
      <attribute name="version" default="1.0.0"/>
      <sequential>
        <echo taskname="modello" message="Generating sources for @{file}"/>
        <modello-single-mode file="@{file}" version="@{version}" mode="java"/>
        <modello-single-mode file="@{file}" version="@{version}" mode="xpp3-reader"/>
        <modello-single-mode file="@{file}" version="@{version}" mode="xpp3-writer"/>
      </sequential>
    </macrodef>

    <modello file="maven-model/src/main/mdo/maven.mdo" version="4.0.0"/>
    <modello file="maven-lifecycle/src/main/mdo/maven-lifecycle.mdo"/>
    <modello file="maven-plugin-api/src/main/mdo/lifecycle.mdo"/>
    <modello file="maven-profile/src/main/mdo/profiles.mdo"/>
    <modello file="maven-core/src/main/mdo/settings.mdo"/>
    <modello file="maven-toolchain/src/main/mdo/toolchains.xml"/>
  </target>

  <target name="compile-boot" depends="generate-sources" description="compiles the bootstrap sources">
    <path id="sources">
      <dirset dir=".">
        <include name="bootstrap/target/generated-sources"/>
        <include name="*/src/main/*"/>
        <include name="maven-reporting/maven-reporting-api/src/main/*"/>
        <exclude name="maven-core-it-verifier/**"/>
      </dirset>
    </path>

    <mkdir dir="bootstrap/target/classes"/>
    <javac destdir="bootstrap/target/classes" debug="${debug}">
      <src refid="sources"/>
      <classpath refid="pom.pathid"/>
    </javac>

    <!-- DGF generating a fake pom.properties so Maven thinks it has a version number -->
    <mkdir dir="bootstrap/target/classes/META-INF/maven/org.apache.maven/maven-core"/>
    <echo message="version=${pom.project.version}"
          file="bootstrap/target/classes/META-INF/maven/org.apache.maven/maven-core/pom.properties"/>

    <path id="maven.classpath">
      <pathelement location="bootstrap/target/classes"/>
      <path refid="sources"/>
      <path refid="pom.pathid"/>
    </path>
  </target>

  <target name="maven-compile" depends="compile-boot" description="compiles Maven using the bootstrap Maven, skipping automated tests">
    <java fork="true" classname="org.apache.maven.cli.MavenCli" failonerror="true">
      <classpath refid="maven.classpath"/>
      <arg value="-B"/>
      <arg value="clean"/>
      <arg value="install"/>
      <arg value="-Dmaven.repo.local=${maven.repo.local}"/>
      <arg value="-Dsurefire.useFile=${surefire.useFile}"/>
    </java>
  </target>

  <target name="maven-assembly" depends="maven-compile" description="generates the Maven installation assembly using the bootstrap Maven">              
    <echo>
    The new Maven distribution was created as part of the MAVEN-COMPILE step, above. 
    This goal just validates the presence of that distribution.
    </echo>
    <condition property="build.failed">
      <not>
        <available file="${maven.assembly}"/>
      </not>
    </condition>
    <fail if="build.failed" message="Assembly task seemed to succeed, but couldn't find assembly file: ${maven.assembly}"/>
  </target>

  <target name="extract-assembly" depends="init,maven-assembly" description="extracts the maven assembly into maven.home">
    <echo>Extracting assembly to ${maven.home.dirname} ...</echo>
    <!-- If we are starting from scratch make sure the directory is created -->
    <delete dir="${maven.home}"/>
    <mkdir dir="${maven.home}"/>
    <unzip src="${maven.assembly}" dest="${maven.home.dirname}"/>
    <chmod perm="+x">
      <fileset dir="${maven.home}/bin">
        <include name="mvn"/>
      </fileset>
    </chmod>
  </target>

  <target name="all" depends="clean-bootstrap,init,extract-assembly"/>

</project>