load("@rules_cc//cc:cc_binary.bzl", "cc_binary")
load("@rules_cc//cc:cc_library.bzl", "cc_library")
load("@rules_cc_autoconf//autoconf:autoconf.bzl", "autoconf")
load("@rules_cc_autoconf//autoconf:autoconf_hdr.bzl", "autoconf_hdr")
load("@rules_cc_autoconf//autoconf:checks.bzl", "checks")
load("@rules_cc_autoconf//autoconf:package_info.bzl", "package_info")

# ===========================================================================
# Autoconf: generate config.h from config.h.in
# ===========================================================================

package_info(
    name = "teckit_package_info",
    package_bugreport = "wstech@sil.org",
)

autoconf(
    name = "configure_ac",
    checks = [
        # AC_HEADER_STDC (line 55) + AC_CHECK_HEADERS (line 56)
        checks.AC_CHECK_HEADER(
            "dlfcn.h",
            define = "HAVE_DLFCN_H",
        ),
        checks.AC_CHECK_HEADER(
            "inttypes.h",
            define = "HAVE_INTTYPES_H",
        ),
        checks.AC_CHECK_HEADER(
            "stdint.h",
            define = "HAVE_STDINT_H",
        ),
        checks.AC_CHECK_HEADER(
            "stdio.h",
            define = "HAVE_STDIO_H",
        ),
        checks.AC_CHECK_HEADER(
            "stdlib.h",
            define = "HAVE_STDLIB_H",
        ),
        checks.AC_CHECK_HEADER(
            "string.h",
            define = "HAVE_STRING_H",
        ),
        checks.AC_CHECK_HEADER(
            "strings.h",
            define = "HAVE_STRINGS_H",
        ),
        checks.AC_CHECK_HEADER(
            "sys/stat.h",
            define = "HAVE_SYS_STAT_H",
        ),
        checks.AC_CHECK_HEADER(
            "sys/types.h",
            define = "HAVE_SYS_TYPES_H",
        ),
        checks.AC_CHECK_HEADER(
            "unistd.h",
            define = "HAVE_UNISTD_H",
        ),

        # zlib is always available via Bazel dependency
        checks.AC_DEFINE("HAVE_LIBZ", "1"),
        checks.AC_DEFINE("HAVE_ZLIB_H", "1"),

        # expat is always available via Bazel dependency
        checks.AC_DEFINE("HAVE_LIBEXPAT", "1"),

        # AC_HEADER_STDC (line 55)
        checks.AC_DEFINE("STDC_HEADERS", "1"),

        # LT_OBJDIR - libtool artifact, not used by source but present in config.h.in
        checks.AC_DEFINE("LT_OBJDIR", '".libs/"'),
    ],
    deps = [
        ":teckit_package_info",
        "@rules_cc_autoconf//autoconf/macros/AC_C_BIGENDIAN",
    ],
)

autoconf_hdr(
    name = "config_h",
    out = "source/config.h",
    template = "config.h.in",
    deps = [":configure_ac"],
)

# ===========================================================================
# Libraries
# ===========================================================================

LOCAL_DEFINES = ["HAVE_CONFIG_H"]

COPTS = select({
    "@rules_cc//cc/compiler:clang": ["-w"],
    "@rules_cc//cc/compiler:gcc": ["-w"],
    "@rules_cc//cc/compiler:msvc-cl": ["/w"],
    "//conditions:default": [],
})

# Public headers shared by both libraries
cc_library(
    name = "TECkit_headers",
    hdrs = [
        "source/Public-headers/TECkit_Common.h",
        "source/Public-headers/TECkit_Compiler.h",
        "source/Public-headers/TECkit_Engine.h",
    ],
    includes = ["source/Public-headers"],
    visibility = ["//visibility:public"],
)

# libTECkit - the conversion engine
cc_library(
    name = "TECkit",
    srcs = [
        "source/Engine.cpp",
    ],
    copts = COPTS,
    includes = ["source"],
    local_defines = LOCAL_DEFINES,
    textual_hdrs = [
        "source/Engine.h",
        "source/NormalizationData.c",
        "source/TECkit_Format.h",
        "source/config.h",
        "source/ulong_chartraits.h",
    ],
    visibility = ["//visibility:public"],
    deps = [
        ":TECkit_headers",
        "@zlib",
    ],
)

# libTECkit_Compiler - the mapping compiler
cc_library(
    name = "TECkit_Compiler",
    srcs = [
        "source/Compiler.cpp",
        "source/UnicodeNames.cpp",
    ],
    copts = COPTS,
    includes = ["source"],
    local_defines = LOCAL_DEFINES,
    textual_hdrs = [
        "source/Compiler.h",
        "source/TECkit_Format.h",
        "source/config.h",
        "source/ulong_chartraits.h",
    ],
    visibility = ["//visibility:public"],
    deps = [
        ":TECkit_headers",
        "@zlib",
    ],
)

# ===========================================================================
# Executables
# ===========================================================================

# teckit_compile - compiles .map files to .tec binary mappings
cc_binary(
    name = "teckit_compile",
    srcs = ["source/Sample-tools/TECkit_Compile.cpp"],
    copts = COPTS,
    visibility = ["//visibility:public"],
    deps = [":TECkit_Compiler"],
)

# txtconv - text conversion tool
cc_binary(
    name = "txtconv",
    srcs = [
        "source/Sample-tools/TxtConv.cpp",
    ],
    copts = COPTS,
    local_defines = LOCAL_DEFINES,
    visibility = ["//visibility:public"],
    deps = [":TECkit"],
)

# sfconv - Standard Format conversion tool
# SFconv.cpp conditionally includes config.h only when platformUTF16 is not
# already defined (it is on macOS via TargetConditionals.h), so HAVE_LIBEXPAT
# must also be set via local_defines to ensure the system expat path is used.
cc_binary(
    name = "sfconv",
    srcs = [
        "SFconv/Debug_Prefix.h",
        "SFconv/Final_Prefix.h",
        "SFconv/SFconv.cpp",
        "SFconv/UtfCodec.cpp",
        "SFconv/UtfCodec.h",
        "SFconv/sfReader.h",
        "SFconv/ushort_chartraits.h",
    ],
    copts = select({
        "@rules_cc//cc/compiler:msvc-cl": [],
        "//conditions:default": ["-std=c++11"],
    }) + COPTS,
    local_defines = LOCAL_DEFINES + [
        "HAVE_LIBEXPAT=1",
    ],
    visibility = ["//visibility:public"],
    deps = [
        ":TECkit",
        "@libexpat",
    ],
)