#!/bin/sh
# set -u
function error () { printf >&2 "%s\n\nPlease see README.md for build instructions.\n" "$1"; exit 1; }

# =================================================
# = Fallback build directory and signing identity =
# =================================================

: ${builddir:=$HOME/build/TextMate}
: ${identity:=-}
: ${capnp_prefix:=/usr/local}
: ${rest_api:=https://api.textmate.org}

# =======================
# = Application version =
# =======================

ver=$(curl -sf "${rest_api}/releases/nightly/version")${tag:-+git.$(git rev-parse --short HEAD)}

# ===============================
# = Check if boost is installed =
# ===============================

if which -s brew && [[ -z "$boostdir" && ! -d /usr/local/include/boost ]]; then
	boostdir=$(brew --prefix boost)/include/boost
fi

for dir in "${boostdir:-/usr/include/boost}" /{opt,usr}/local/include/boost ${CPATH//:/ }; do
	if [[ ! -L "${builddir}/include/boost" && -d "${dir}" ]]; then
		mkdir -p "${builddir}/include" && ln -fs "${dir}" "${builddir}/include/boost"
	fi
done

test -L "${builddir}/include/boost" || error "*** boost not installed."

# ===========================================
# = Check if google sparsehash is installed =
# ===========================================

if which -s brew && [[ -z "$sparsedir" && ! -d /usr/local/include/sparsehash ]]; then
	sparsedir=$(brew --prefix google-sparsehash)/include/sparsehash
fi

for dir in "${sparsedir:-/usr/include/sparsehash}" /{opt,usr}/local/include/sparsehash/ ; do
	if [[ ! -L "${builddir}/include/sparsehash" && -d "${dir}" ]]; then
		mkdir -p "${builddir}/include" && ln -fs "${dir}" "${builddir}/include/sparsehash"
	fi
done

test -L "${builddir}/include/sparsehash" || error "*** google sparsehash not installed."

# ===========================================
# = Check if non-system openssl is intalled =
# ===========================================

if which -s brew && [[ -z "$libressl_prefix" && ! -d "${libressl_prefix}/include/openssl" ]]; then
	libressl_prefix=$(brew --prefix libressl)
	test -d "${libressl_prefix}/include/" || error "*** openssl headers not found."
fi

if which -s port && [[ -z "$libressl_prefix" && ! -d "${libressl_prefix}/include/openssl" ]]; then
	libressl_prefix=/opt/local/
	test -d "${libressl_prefix}/include/openssl" || error "*** openssl headers not found."
fi

# ===============================================
# = Check if we can use pbzip2 instead of bzip2 =
# ===============================================

bzip2_flag="-j"
if which -s pbzip2; then
	bzip2_flag="--use-compress-prog=pbzip2"
fi

# ==============================
# = Check various dependencies =
# ==============================

test -x "${capnp_prefix}/bin/capnp" || error "*** cap’n’proto not installed in ‘${capnp_prefix}’. Set \`capnp_prefix\` if installed elsewhere."

for dep in ninja ragel multimarkdown pgrep pkill; do
	which -s "$dep" || error "*** dependency missing: ‘${dep}’."
done

# =====================================
# = Generate fixtures and build files =
# =====================================

mkdir -p "$builddir/Frameworks/SoftwareUpdate/fixtures"
DST=$(cd >/dev/null "$builddir/Frameworks/SoftwareUpdate/fixtures"; pwd) make -C Frameworks/SoftwareUpdate/fixtures

bin/gen_build -o build.ninja -C "$builddir" -dAPP_VERSION="$ver" -didentity="$identity" -drest_api="$rest_api" -dbzip2_flag="$bzip2_flag" -dcapnp_prefix="$capnp_prefix" -dlibressl_prefix="$libressl_prefix" target

BUNDLES_TBZ=Applications/TextMate/resources/DefaultBundles.tbz
test -e "$BUNDLES_TBZ" || builddir="$builddir" bin/create_default_bundles_tbz "$BUNDLES_TBZ"