from packages import getPackage, iterDownloadablePackages

import sys

def printPackagesMake():

	patchesDir = 'build/3rdparty'

	sourceDir = 'derived/3rdparty/src'

	tarballsDir = 'derived/3rdparty/download'

	print('SOURCE_DIR:=%s' % sourceDir)

	print()

	print('# Information about packages.')

	print('# Generated from the data in "build/packages.py".')

	print()

	tarballs = []

	for package in iterDownloadablePackages():

		makeName = package.getMakeName()

		tarball = tarballsDir + '/' + package.getTarballName()

		tarballs.append(tarball)

		print('# %s' % package.niceName)

		print('PACKAGE_%s:=%s' % (makeName, package.getSourceDirName()))

		print('TARBALL_%s:=%s' % (makeName, tarball))

		print('# Download:')

		print('%s:' % tarball)

		print('\tmkdir -p %s' % tarballsDir)

		print('\t$(PYTHON) build/download.py %s/%s %s' % (

			package.downloadURL, package.getTarballName(), tarballsDir

			))

		packageSourceDirName = package.getSourceDirName()

		packageSourceDir = sourceDir + '/' + packageSourceDirName

		patchFile = '%s/%s.diff' % (patchesDir, packageSourceDirName)

		print('# Verify:')

		verifyMarker = '%s.verified' % tarball

		print('%s: %s' % (verifyMarker, tarball))

		print('\t$(PYTHON) build/checksum.py %s %d %s' % (

			tarball,

			package.fileLength,

			' '.join('%s=%s' % item for item in package.checksums.items())

			))

		print('\ttouch %s' % verifyMarker)

		print('# Extract:')

		extractMarker = '%s/.extracted' % packageSourceDir

		print('%s: %s $(wildcard %s)' % (extractMarker, verifyMarker, patchFile))

		print('\trm -rf %s' % packageSourceDir)

		print('\tmkdir -p %s' % sourceDir)

		print('\t$(PYTHON) build/extract.py %s %s %s' % (

			tarball, sourceDir, packageSourceDirName

			))

		print('\ttest ! -e %s || $(PYTHON) build/patch.py %s %s' % (

			patchFile, patchFile, sourceDir

			))

		print('\ttouch %s' % extractMarker)

		print()

	print('# Convenience target to download all source packages.')

	print('.PHONY: download')

	print('download: %s' % ' '.join(tarballs))

if __name__ == '__main__':

	if len(sys.argv) == 1:

		printPackagesMake()

	else:

		print('Usage: python3 3rdparty_packages2make.py', file=sys.stderr)

		sys.exit(2)