class Libspatialite < Formula
  desc "Adds spatial SQL capabilities to SQLite"
  homepage "https://www.gaia-gis.it/fossil/libspatialite/index"
  url "https://www.gaia-gis.it/gaia-sins/libspatialite-sources/libspatialite-4.3.0a.tar.gz"
  sha256 "88900030a4762904a7880273f292e5e8ca6b15b7c6c3fb88ffa9e67ee8a5a499"
  revision 1

  bottle do
    cellar :any
    sha256 "6d447980d1a3ecefa6d234cd00333ff93f27455a5f6ebb4971301f5382d07513" => :el_capitan
    sha256 "6e77fb5cd2bab34aa5bc984a8519f14e89401f87d92b50109445a12df8ff3b68" => :yosemite
    sha256 "fdc799a3f520cd2cce7c1bc01b2f4ad18f5796948f88cfd6746bd81e02c82930" => :mavericks
  end

  head do
    url "https://www.gaia-gis.it/fossil/libspatialite", :using => :fossil
    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  option "without-freexl", "Build without support for reading Excel files"
  option "without-libxml2", "Disable support for xml parsing (parsing needed by spatialite-gui)"
  option "without-liblwgeom", "Build without additional sanitization/segmentation routines provided by PostGIS 2.0+ library"
  option "without-geopackage", "Build without OGC GeoPackage support"
  option "without-check", "Do not run `make check` prior to installing"

  depends_on "pkg-config" => :build
  depends_on "proj"
  depends_on "geos"
  # Needs SQLite > 3.7.3 which rules out system SQLite on Snow Leopard and
  # below. Also needs dynamic extension support which rules out system SQLite
  # on Lion. Finally, RTree index support is required as well.
  depends_on "sqlite"
  depends_on "libxml2" => :recommended
  depends_on "freexl" => :recommended
  depends_on "liblwgeom" => :recommended

  def install
    system "autoreconf", "-fi" if build.head?

    # New SQLite3 extension won't load via SELECT load_extension("mod_spatialite");
    # unless named mod_spatialite.dylib (should actually be mod_spatialite.bundle)
    # See: https://groups.google.com/forum/#!topic/spatialite-users/EqJAB8FYRdI
    #      needs upstream fixes in both SQLite and libtool
    inreplace "configure",
              "shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'",
              "shrext_cmds='.dylib'"

    # Ensure Homebrew's libsqlite is found before the system version.
    sqlite = Formula["sqlite"]
    ENV.append "LDFLAGS", "-L#{sqlite.opt_lib}"
    ENV.append "CFLAGS", "-I#{sqlite.opt_include}"

    if build.with? "liblwgeom"
      lwgeom = Formula["liblwgeom"]
      ENV.append "LDFLAGS", "-L#{lwgeom.opt_lib}"
      ENV.append "CFLAGS", "-I#{lwgeom.opt_include}"
    end

    args = %W[
      --disable-dependency-tracking
      --prefix=#{prefix}
      --with-sysroot=#{HOMEBREW_PREFIX}
    ]
    args << "--enable-geocallbacks"
    args << "--enable-freexl=no" if build.without? "freexl"
    args << "--enable-libxml2=no" if build.without? "libxml2"
    args << "--enable-lwgeom=yes" if build.with? "liblwgeom"
    args << "--enable-geopackage=no" if build.without? "geopackage"

    system "./configure", *args
    system "make", "check" if build.with? "check"
    system "make", "install"
  end

  test do
    # Verify mod_spatialite extension can be loaded using Homebrew's SQLite
    system "echo \"SELECT load_extension('#{opt_lib}/mod_spatialite');\" | #{Formula["sqlite"].opt_bin}/sqlite3"
  end
end