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

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

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

# ========================================================
# = Application name, version, revision, and required OS =
# ========================================================

name=TextMate
ver=2.0
rev=1
min_os=10.7

rev=$(( $(curl -sf "${rest_api}/releases/nightly/revision")+1 )) || \
	if test -d .git && which -s git; then
		rev=$(git log --oneline master | wc -l)
	fi

# ===============================================
# = Find clang via xcrun, MacPorts, or Homebrew =
# ===============================================

if which -s xcrun; then
	: ${CC:=$(xcrun -find clang)}
	: ${CXX:=$(xcrun -find clang++)}
fi

for cc in /{opt,usr}/local/bin/clang /usr/bin/clang; do
	if [[ ! -x "$CC" || ! -x "$CXX" ]]; then
		CC="${cc}"
		CXX="${cc}++"
	fi
done

test -x "$CC" || error "*** clang not installed."
"$CC" &>/dev/null -x objective-c -include Foundation/Foundation.h -c -o /tmp/dummy - <<< 'int main () { id str = @("str"); return 0; }' || error "$CC is too old to build this project."

# ===============================
# = 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 "${boostdir:-/usr/include/boost}" /{opt,usr}/local/include/boost; do
	if [[ ! -L "${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."

# ==================================
# = Locate Xcode directory and SDK =
# ==================================

xcodedir=/Developer
sdk="/Developer/SDKs/${sdk:-MacOSX10.7}.sdk"

if which -s xcode-select; then
	xcodedir=$(xcode-select -print-path)
	if ! [[ -e "$sdk" ]]; then
		sdk="$xcodedir/Platforms/MacOSX.platform$sdk"
	fi
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 =
# ==============================

which -s multimarkdown || which -s maruku || which -s Markdown.pl || error "*** no markdown converter installed."

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

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

DST="$builddir/Frameworks/SoftwareUpdate/fixtures" make -C Frameworks/SoftwareUpdate/fixtures

# # Necessary if you do distribution builds (which should include some default bundles)
# builddir="$builddir" bin/create_default_bundles_tbz

bin/gen_build -o build.ninja -C "$builddir" -dAPP_NAME="$name" -dAPP_VERSION="$ver" -dAPP_REVISION="$rev" -dAPP_MIN_OS="$min_os" -dCC="$CC" -dCXX="$CXX" -dxcodedir="$xcodedir" -didentity="$identity" -drest_api="$rest_api" -dsdk="$sdk" -dbzip2_flag="$bzip2_flag" target