plugins {
    id 'base'
}

ext {
  python_executable = 'python3'
  venv_name = 'venv'
}

task checkPythonVersion(type: Exec) {
  commandLine python_executable, '-c', 'import sys; assert sys.version_info >= (3, 6)'
}

task environmentSetup(type: Exec, dependsOn: checkPythonVersion) {
  inputs.file file('setup.py')
  outputs.dir("${venv_name}")
  commandLine 'bash', '-c', "${python_executable} -m venv ${venv_name} && ${venv_name}/bin/python -m pip install --upgrade pip wheel setuptools==57.5.0"
}

task runPreFlightScript(type: Exec, dependsOn: environmentSetup) {
  commandLine "scripts/datahub_preflight.sh"
}

task installPackage(type: Exec, dependsOn: runPreFlightScript) {
  inputs.file file('setup.py')
  outputs.dir("${venv_name}")
  commandLine "${venv_name}/bin/pip", 'install', '-e', '.'
}

task codegen(type: Exec, dependsOn: [environmentSetup, installPackage, ':metadata-events:mxe-schemas:build']) {
  inputs.files(project.fileTree(dir: "../metadata-events/mxe-schemas/src/", include: "**/*.avsc"))
  outputs.dir('src/datahub/metadata')
  commandLine 'bash', '-c', "source ${venv_name}/bin/activate && ./scripts/codegen.sh"
}

task install(dependsOn: [installPackage, codegen])

task installDev(type: Exec, dependsOn: [install]) {
  inputs.file file('setup.py')
  outputs.dir("${venv_name}")
  outputs.file("${venv_name}/.build_install_dev_sentinel")
  commandLine 'bash', '-x', '-c',
    "${venv_name}/bin/pip install -e .[dev] && touch ${venv_name}/.build_install_dev_sentinel"
}

task modelDocGen(type: Exec, dependsOn: [codegen]) {
  inputs.files(
    file('scripts/modeldocgen.py'),
    project.fileTree(dir: "../metadata-models/docs/entities/", include: "**/*.md"),
    project.fileTree(dir: "examples/", include: "**/*.py"),
    project.fileTree(dir: "../metadata-events/mxe-schemas/src/", include: "**/*.avsc")
  )
  outputs.dir('../docs/generated')
  commandLine 'bash', '-c', "source ${venv_name}/bin/activate && ./scripts/modeldocgen.sh"
}

task modelDocUpload(type: Exec, dependsOn: [modelDocGen]) {
    commandLine 'bash', '-c', "source ${venv_name}/bin/activate && ./scripts/modeldocupload.sh"
}


task lint(type: Exec, dependsOn: installDev) {
  /*
    The find/sed combo below is a temporary work-around for the following mypy issue with airflow 2.2.0:
   "venv/lib/python3.8/site-packages/airflow/_vendor/connexion/spec.py:169: error: invalid syntax".
   */
  commandLine 'bash', '-x', '-c',
    "find ${venv_name}/lib -path *airflow/_vendor/connexion/spec.py -exec sed -i.bak -e '169,169s/  # type: List\\[str\\]//g' {} \\; && " +
    "source ${venv_name}/bin/activate && black --check --diff src/ tests/ examples/ && isort --check --diff src/ tests/ examples/ && flake8 --count --statistics src/ tests/ examples/ && mypy src/ tests/ examples/"
}
task lintFix(type: Exec, dependsOn: installDev) {
  commandLine 'bash', '-x', '-c',
    "source ${venv_name}/bin/activate && " +
    "black src/ tests/ examples/ && " +
    "isort src/ tests/ examples/ && " +
    "flake8 src/ tests/ examples/ && " +
    "mypy src/ tests/ examples/"
}

task testQuick(type: Exec, dependsOn: installDev) {
  // We can't enforce the coverage requirements if we run a subset of the tests.
  inputs.files(project.fileTree(dir: "src/", include: "**/*.py"))
  inputs.files(project.fileTree(dir: "tests/"))
  outputs.dir("${venv_name}")
  commandLine 'bash', '-x', '-c',
    "source ${venv_name}/bin/activate && pytest -m 'not integration and not slow_integration' -vv --continue-on-collection-errors --junit-xml=junit.quick.xml"
}

task installDevTest(type: Exec, dependsOn: [installDev]) {
  inputs.file file('setup.py')
  outputs.dir("${venv_name}")
  outputs.file("${venv_name}/.build_install_dev_test_sentinel")
  commandLine 'bash', '-x', '-c',
    "${venv_name}/bin/pip install -e .[dev,integration-tests] && touch ${venv_name}/.build_install_dev_test_sentinel"
}

def testFile = hasProperty('testFile') ? testFile : 'unknown'
task testSingle(dependsOn: [installDevTest]) {
  doLast {
  if (testFile != 'unknown')  {
  exec {
    commandLine 'bash', '-x', '-c',
     "source ${venv_name}/bin/activate && pytest ${testFile}"
    }
  } else {
   throw new GradleException("No file provided. Use -PtestFile=<test_file>")
    }
  }
}

task testFull(type: Exec, dependsOn: [testQuick, installDevTest]) {
  commandLine 'bash', '-x', '-c',
    "source ${venv_name}/bin/activate && pytest -m 'not slow_integration' -vv --continue-on-collection-errors --junit-xml=junit.full.xml"
}

task testSlowIntegration(type: Exec, dependsOn: [testQuick, installDevTest]) {
  commandLine 'bash', '-x', '-c',
    "source ${venv_name}/bin/activate && pytest -m 'slow_integration' -vv --continue-on-collection-errors --junit-xml=junit.full.xml"
}

task cleanPythonCache(type: Exec) {
  commandLine 'bash', '-x', '-c',
    "find src -type f -name '*.py[co]' -delete -o -type d -name __pycache__ -delete -o -type d -empty -delete"
}

build.dependsOn install
check.dependsOn lint
check.dependsOn testQuick

clean {
  delete venv_name
  delete 'build'
  delete 'dist'
  delete 'src/datahub/metadata'
  delete '../docs/generated'
}
clean.dependsOn cleanPythonCache