#!/usr/bin/env python
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import print_function, unicode_literals

import math
import os
import platform
import posixpath
import shlex
import subprocess
import sys
import traceback


read_input = input
if sys.version_info.major == 2:
    read_input = raw_input


def add_tests_dir_to_path():
    from os.path import dirname, exists, join, realpath

    js_src_dir = dirname(dirname(realpath(sys.argv[0])))
    assert exists(join(js_src_dir, "jsapi.h"))
    sys.path.insert(0, join(js_src_dir, "tests"))


add_tests_dir_to_path()

from lib import jittests
from lib.tests import (
    get_jitflags,
    valid_jitflags,
    get_cpu_count,
    get_environment_overlay,
    change_env,
)
from lib.tempfile import TemporaryDirectory


def which(name):
    if name.find(os.path.sep) != -1:
        return os.path.abspath(name)

    for path in os.environ["PATH"].split(os.pathsep):
        full = os.path.join(path, name)
        if os.path.exists(full):
            return os.path.abspath(full)

    return name


def choose_item(jobs, max_items, display):
    job_count = len(jobs)

    # Don't present a choice if there are too many tests
    if job_count > max_items:
        raise Exception("Too many jobs.")

    for i, job in enumerate(jobs, 1):
        print("{}) {}".format(i, display(job)))

    item = read_input("Which one:\n")
    try:
        item = int(item)
        if item > job_count or item < 1:
            raise Exception("Input isn't between 1 and {}".format(job_count))
    except ValueError:
        raise Exception("Unrecognized input")

    return jobs[item - 1]


def main(argv):
    # The [TESTS] optional arguments are paths of test files relative
    # to the jit-test/tests directory.
    import argparse

    op = argparse.ArgumentParser(description="Run jit-test JS shell tests")
    op.add_argument(
        "-s",
        "--show-cmd",
        dest="show_cmd",
        action="store_true",
        help="show js shell command run",
    )
    op.add_argument(
        "-f",
        "--show-failed-cmd",
        dest="show_failed",
        action="store_true",
        help="show command lines of failed tests",
    )
    op.add_argument(
        "-o",
        "--show-output",
        dest="show_output",
        action="store_true",
        help="show output from js shell",
    )
    op.add_argument(
        "-F",
        "--failed-only",
        dest="failed_only",
        action="store_true",
        help="if --show-output is given, only print output for" " failed tests",
    )
    op.add_argument(
        "--no-show-failed",
        dest="no_show_failed",
        action="store_true",
        help="don't print output for failed tests" " (no-op with --show-output)",
    )
    op.add_argument(
        "-x",
        "--exclude",
        dest="exclude",
        default=[],
        action="append",
        help="exclude given test dir or path",
    )
    op.add_argument(
        "--exclude-from",
        dest="exclude_from",
        type=str,
        help="exclude each test dir or path in FILE",
    )
    op.add_argument(
        "--slow",
        dest="run_slow",
        action="store_true",
        help="also run tests marked as slow",
    )
    op.add_argument(
        "--no-slow",
        dest="run_slow",
        action="store_false",
        help="do not run tests marked as slow (the default)",
    )
    op.add_argument(
        "-t",
        "--timeout",
        dest="timeout",
        type=float,
        default=150.0,
        help="set test timeout in seconds",
    )
    op.add_argument(
        "--no-progress",
        dest="hide_progress",
        action="store_true",
        help="hide progress bar",
    )
    op.add_argument(
        "--tinderbox",
        dest="format",
        action="store_const",
        const="automation",
        help="Use automation-parseable output format",
    )
    op.add_argument(
        "--format",
        dest="format",
        default="none",
        choices=("automation", "none"),
        help="Output format (default %(default)s).",
    )
    op.add_argument(
        "--args",
        dest="shell_args",
        metavar="ARGS",
        default="",
        help="extra args to pass to the JS shell",
    )
    op.add_argument(
        "--feature-args",
        dest="feature_args",
        metavar="ARGS",
        default="",
        help="even more args to pass to the JS shell "
        "(for compatibility with jstests.py)",
    )
    op.add_argument(
        "-w",
        "--write-failures",
        dest="write_failures",
        metavar="FILE",
        help="Write a list of failed tests to [FILE]",
    )
    op.add_argument(
        "-C",
        "--check-output",
        action="store_true",
        dest="check_output",
        help="Run tests to check output for different jit-flags",
    )
    op.add_argument(
        "-r",
        "--read-tests",
        dest="read_tests",
        metavar="FILE",
        help="Run test files listed in [FILE]",
    )
    op.add_argument(
        "-R",
        "--retest",
        dest="retest",
        metavar="FILE",
        help="Retest using test list file [FILE]",
    )
    op.add_argument(
        "-g",
        "--debug",
        action="store_const",
        const="gdb",
        dest="debugger",
        help="Run a single test under the gdb debugger",
    )
    op.add_argument(
        "-G",
        "--debug-rr",
        action="store_const",
        const="rr",
        dest="debugger",
        help="Run a single test under the rr debugger",
    )
    op.add_argument(
        "--debugger", type=str, help="Run a single test under the specified debugger"
    )
    op.add_argument(
        "--valgrind",
        dest="valgrind",
        action="store_true",
        help="Enable the |valgrind| flag, if valgrind is in $PATH.",
    )
    op.add_argument(
        "--unusable-error-status",
        action="store_true",
        help="Ignore incorrect exit status on tests that should return nonzero.",
    )
    op.add_argument(
        "--valgrind-all",
        dest="valgrind_all",
        action="store_true",
        help="Run all tests with valgrind, if valgrind is in $PATH.",
    )
    op.add_argument(
        "--avoid-stdio",
        dest="avoid_stdio",
        action="store_true",
        help="Use js-shell file indirection instead of piping stdio.",
    )
    op.add_argument(
        "--write-failure-output",
        dest="write_failure_output",
        action="store_true",
        help="With --write-failures=FILE, additionally write the"
        " output of failed tests to [FILE]",
    )
    op.add_argument(
        "--jitflags",
        dest="jitflags",
        default="none",
        choices=valid_jitflags(),
        help="IonMonkey option combinations (default %(default)s).",
    )
    op.add_argument(
        "--ion",
        dest="jitflags",
        action="store_const",
        const="ion",
        help="Run tests once with --ion-eager and once with"
        " --baseline-eager (equivalent to --jitflags=ion)",
    )
    op.add_argument(
        "--no-xdr",
        dest="use_xdr",
        action="store_false",
        help="Whether to disable caching of self-hosted parsed content in XDR format.",
    )
    op.add_argument(
        "--tbpl",
        dest="jitflags",
        action="store_const",
        const="all",
        help="Run tests with all IonMonkey option combinations"
        " (equivalent to --jitflags=all)",
    )
    op.add_argument(
        "-j",
        "--worker-count",
        dest="max_jobs",
        type=int,
        default=max(1, get_cpu_count()),
        help="Number of tests to run in parallel (default %(default)s).",
    )
    op.add_argument(
        "--remote", action="store_true", help="Run tests on a remote device"
    )
    op.add_argument(
        "--deviceIP",
        action="store",
        type=str,
        dest="device_ip",
        help="IP address of remote device to test",
    )
    op.add_argument(
        "--devicePort",
        action="store",
        type=int,
        dest="device_port",
        default=20701,
        help="port of remote device to test",
    )
    op.add_argument(
        "--deviceSerial",
        action="store",
        type=str,
        dest="device_serial",
        default=None,
        help="ADB device serial number of remote device to test",
    )
    op.add_argument(
        "--remoteTestRoot",
        dest="remote_test_root",
        action="store",
        type=str,
        default="/data/local/tmp/test_root",
        help="The remote directory to use as test root" " (e.g.  %(default)s)",
    )
    op.add_argument(
        "--localLib",
        dest="local_lib",
        action="store",
        type=str,
        help="The location of libraries to push -- preferably" " stripped",
    )
    op.add_argument(
        "--repeat", type=int, default=1, help="Repeat tests the given number of times."
    )
    op.add_argument("--this-chunk", type=int, default=1, help="The test chunk to run.")
    op.add_argument(
        "--total-chunks", type=int, default=1, help="The total number of test chunks."
    )
    op.add_argument(
        "--ignore-timeouts",
        dest="ignore_timeouts",
        metavar="FILE",
        help="Ignore timeouts of tests listed in [FILE]",
    )
    op.add_argument(
        "--test-reflect-stringify",
        dest="test_reflect_stringify",
        help="instead of running tests, use them to test the "
        "Reflect.stringify code in specified file",
    )
    # --enable-webrender is ignored as it is not relevant for JIT
    # tests, but is required for harness compatibility.
    op.add_argument(
        "--enable-webrender",
        action="store_true",
        dest="enable_webrender",
        default=False,
        help=argparse.SUPPRESS,
    )
    op.add_argument("js_shell", metavar="JS_SHELL", help="JS shell to run tests with")

    options, test_args = op.parse_known_args(argv)
    js_shell = which(options.js_shell)
    test_environment = get_environment_overlay(js_shell)

    if not (os.path.isfile(js_shell) and os.access(js_shell, os.X_OK)):
        if (
            platform.system() != "Windows"
            or os.path.isfile(js_shell)
            or not os.path.isfile(js_shell + ".exe")
            or not os.access(js_shell + ".exe", os.X_OK)
        ):
            op.error("shell is not executable: " + js_shell)

    if jittests.stdio_might_be_broken():
        # Prefer erring on the side of caution and not using stdio if
        # it might be broken on this platform.  The file-redirect
        # fallback should work on any platform, so at worst by
        # guessing wrong we might have slowed down the tests a bit.
        #
        # XXX technically we could check for broken stdio, but it
        # really seems like overkill.
        options.avoid_stdio = True

    if options.retest:
        options.read_tests = options.retest
        options.write_failures = options.retest

    test_list = []
    read_all = True

    if test_args:
        read_all = False
        for arg in test_args:
            test_list += jittests.find_tests(arg)

    if options.read_tests:
        read_all = False
        try:
            f = open(options.read_tests)
            for line in f:
                test_list.append(os.path.join(jittests.TEST_DIR, line.strip("\n")))
            f.close()
        except IOError:
            if options.retest:
                read_all = True
            else:
                sys.stderr.write(
                    "Exception thrown trying to read test file"
                    " '{}'\n".format(options.read_tests)
                )
                traceback.print_exc()
                sys.stderr.write("---\n")

    if read_all:
        test_list = jittests.find_tests()

    if options.exclude_from:
        with open(options.exclude_from) as fh:
            for line in fh:
                line_exclude = line.strip()
                if not line_exclude.startswith("#") and len(line_exclude):
                    options.exclude.append(line_exclude)

    if options.exclude:
        exclude_list = []
        for exclude in options.exclude:
            exclude_list += jittests.find_tests(exclude)
        test_list = [test for test in test_list if test not in set(exclude_list)]

    if not test_list:
        print("No tests found matching command line arguments.", file=sys.stderr)
        sys.exit(0)

    test_list = [jittests.JitTest.from_file(_, options) for _ in test_list]

    if not options.run_slow:
        test_list = [_ for _ in test_list if not _.slow]

    if options.test_reflect_stringify is not None:
        for test in test_list:
            test.test_reflect_stringify = options.test_reflect_stringify

    # If chunking is enabled, determine which tests are part of this chunk.
    # This code was adapted from testing/mochitest/runtestsremote.py.
    if options.total_chunks > 1:
        total_tests = len(test_list)
        tests_per_chunk = math.ceil(total_tests / float(options.total_chunks))
        start = int(round((options.this_chunk - 1) * tests_per_chunk))
        end = int(round(options.this_chunk * tests_per_chunk))
        test_list = test_list[start:end]

    if not test_list:
        print(
            "No tests found matching command line arguments after filtering.",
            file=sys.stderr,
        )
        sys.exit(0)

    # The full test list is ready. Now create copies for each JIT configuration.
    test_flags = get_jitflags(options.jitflags)

    test_list = [_ for test in test_list for _ in test.copy_variants(test_flags)]

    job_list = (test for test in test_list)
    job_count = len(test_list)

    if options.repeat:

        def repeat_copy(job_list_generator, repeat):
            job_list = list(job_list_generator)
            for i in range(repeat):
                for test in job_list:
                    if i == 0:
                        yield test
                    else:
                        yield test.copy()

        job_list = repeat_copy(job_list, options.repeat)
        job_count *= options.repeat

    if options.ignore_timeouts:
        read_all = False
        try:
            with open(options.ignore_timeouts) as f:
                ignore = set()
                for line in f.readlines():
                    path = line.strip("\n")
                    ignore.add(path)
                options.ignore_timeouts = ignore
        except IOError:
            sys.exit("Error reading file: " + options.ignore_timeouts)
    else:
        options.ignore_timeouts = set()

    prefix = (
        [js_shell] + shlex.split(options.shell_args) + shlex.split(options.feature_args)
    )
    prologue = os.path.join(jittests.LIB_DIR, "prologue.js")
    if options.remote:
        prologue = posixpath.join(
            options.remote_test_root, "tests", "tests", "lib", "prologue.js"
        )

    prefix += ["-f", prologue]

    if options.debugger:
        if job_count > 1:
            print(
                "Multiple tests match command line"
                " arguments, debugger can only run one"
            )
            jobs = list(job_list)

            def display_job(job):
                flags = ""
                if len(job.jitflags) != 0:
                    flags = "({})".format(" ".join(job.jitflags))
                return "{} {}".format(job.path, flags)

            try:
                tc = choose_item(jobs, max_items=50, display=display_job)
            except Exception as e:
                sys.exit(str(e))
        else:
            tc = next(job_list)

        if options.debugger == "gdb":
            debug_cmd = ["gdb", "--args"]
        elif options.debugger == "lldb":
            debug_cmd = ["lldb", "--"]
        elif options.debugger == "rr":
            debug_cmd = ["rr", "record"]
        else:
            debug_cmd = options.debugger.split()

        with change_env(test_environment):
            with TemporaryDirectory() as tempdir:
                if options.debugger == "rr":
                    subprocess.call(
                        debug_cmd
                        + tc.command(
                            prefix, jittests.LIB_DIR, jittests.MODULE_DIR, tempdir
                        )
                    )
                    os.execvp("rr", ["rr", "replay"])
                else:
                    os.execvp(
                        debug_cmd[0],
                        debug_cmd
                        + tc.command(
                            prefix, jittests.LIB_DIR, jittests.MODULE_DIR, tempdir
                        ),
                    )
        sys.exit()

    try:
        ok = None
        if options.remote:
            ok = jittests.run_tests(job_list, job_count, prefix, options, remote=True)
        else:
            with change_env(test_environment):
                ok = jittests.run_tests(job_list, job_count, prefix, options)
        if not ok:
            sys.exit(2)
    except OSError:
        if not os.path.exists(prefix[0]):
            print(
                "JS shell argument: file does not exist:" " '{}'".format(prefix[0]),
                file=sys.stderr,
            )
            sys.exit(1)
        else:
            raise


if __name__ == "__main__":
    main(sys.argv[1:])