#!/usr/bin/env python

import hashlib
import json
import os
import sys
from pathlib import Path

import urllib3
from packaging.version import parse

# Find the current stable versions of each browser we
# support and the sha256 of these. That's useful for
# updating `//common:repositories.bzl`

http = urllib3.PoolManager()


def calculate_hash(url):
    print("Calculate hash for %s" % url, file=sys.stderr)
    h = hashlib.sha256()
    r = http.request("GET", url, preload_content=False)
    for b in iter(lambda: r.read(4096), b""):
        h.update(b)
    return h.hexdigest()


def get_chrome_info_for_channel(channel):
    r = http.request(
        "GET",
        f"https://chromiumdash.appspot.com/fetch_releases?channel={channel}&num=1&platform=Mac,Linux",
    )
    all_versions = json.loads(r.data)
    # use the same milestone for all chrome releases, so pick the lowest
    milestone = min(
        [version["milestone"] for version in all_versions if version["milestone"]]
    )
    r = http.request(
        "GET",
        "https://googlechromelabs.github.io/chrome-for-testing/known-good-versions-with-downloads.json",
    )
    versions = json.loads(r.data)["versions"]

    return sorted(
        filter(lambda v: v["version"].split(".")[0] == str(milestone), versions),
        key=lambda v: parse(v["version"]),
    )[-1]


def chromedriver(selected_version, workspace_prefix=""):
    content = ""

    drivers = selected_version["downloads"]["chromedriver"]

    url = [d["url"] for d in drivers if d["platform"] == "linux64"][0]
    sha = calculate_hash(url)

    content += f"""    http_archive(
        name = "linux_{workspace_prefix}chromedriver",
        url = "{url}",
        sha256 = "{sha}",
        strip_prefix = "chromedriver-linux64",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["chromedriver"])

js_library(
    name = "chromedriver-js",
    data = ["chromedriver"],
)
\"\"\",
    )
"""

    url = [d["url"] for d in drivers if d["platform"] == "mac-x64"][0]
    sha = calculate_hash(url)

    content += f"""
    http_archive(
        name = "mac_{workspace_prefix}chromedriver",
        url = "{url}",
        sha256 = "{sha}",
        strip_prefix = "chromedriver-mac-x64",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["chromedriver"])

js_library(
    name = "chromedriver-js",
    data = ["chromedriver"],
)
\"\"\",
    )
"""

    return content


def chrome(selected_version, workspace_prefix=""):
    content = ""
    chrome_downloads = selected_version["downloads"]["chrome"]

    url = [d["url"] for d in chrome_downloads if d["platform"] == "linux64"][0]
    sha = calculate_hash(url)

    content += f"""
    http_archive(
        name = "linux_{workspace_prefix}chrome",
        url = "{url}",
        sha256 = "{sha}",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

filegroup(
    name = "files",
    srcs = glob(["**/*"]),
)

exports_files(["chrome-linux64/chrome"])

js_library(
    name = "chrome-js",
    data = [":files"],
)
\"\"\",
    )
"""

    url = [d["url"] for d in chrome_downloads if d["platform"] == "mac-x64"][0]
    sha = calculate_hash(url)  # Calculate SHA for Mac chrome

    content += f"""    http_archive(
        name = "mac_{workspace_prefix}chrome",
        url = "{url}",
        sha256 = "{sha}",
        strip_prefix = "chrome-mac-x64",
        patch_cmds = [
            "mv 'Google Chrome for Testing.app' Chrome.app",
            "mv 'Chrome.app/Contents/MacOS/Google Chrome for Testing' Chrome.app/Contents/MacOS/Chrome",
        ],
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["Chrome.app"])

js_library(
    name = "chrome-js",
    data = glob(["Chrome.app/**/*"]),
)
\"\"\",
    )
"""

    return content


def convert_keys_to_lowercase(obj):
    if isinstance(obj, dict):
        return {k.lower(): convert_keys_to_lowercase(v) for k, v in obj.items()}
    elif isinstance(obj, list):
        return [convert_keys_to_lowercase(i) for i in obj]
    else:
        return obj


def case_insensitive_json_loads(json_str):
    data = json.loads(json_str)
    return convert_keys_to_lowercase(data)


def edge():
    content = ""
    r = http.request("GET", "https://edgeupdates.microsoft.com/api/products")
    all_data = case_insensitive_json_loads(r.data)

    linux = None
    linux_hash = None
    mac = None
    mac_hash = None

    for data in all_data:
        if not "Stable" == data.get("product"):
            continue
        for release in data["releases"]:
            if "MacOS" == release.get("platform"):
                for artifact in release["artifacts"]:
                    if "pkg" == artifact["artifactname"]:
                        mac = artifact["location"]
                        mac_hash = artifact["hash"]
                        mac_version = release["productversion"]
            elif "Linux" == release.get("platform"):
                for artifact in release["artifacts"]:
                    if "deb" == artifact["artifactname"]:
                        linux = artifact["location"]
                        linux_hash = artifact["hash"]

    if mac and mac_hash:
        content += """
    pkg_archive(
        name = "mac_edge",
        url = "%s",
        sha256 = "%s",
        move = {
            "MicrosoftEdge-%s.pkg/Payload/Microsoft Edge.app": "Edge.app",
        },
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["Edge.app"])

js_library(
    name = "edge-js",
    data = glob(["Edge.app/**/*"]),
)
\"\"\",
    )
""" % (
            mac,
            mac_hash.lower(),
            mac_version,
        )

    if linux and linux_hash:
        content += """
    deb_archive(
        name = "linux_edge",
        url = "%s",
        sha256 = "%s",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

filegroup(
    name = "files",
    srcs = glob(["**/*"]),
)

exports_files(["opt/microsoft/msedge/microsoft-edge"])

js_library(
    name = "edge-js",
    data = [":files"],
)
\"\"\",
    )
""" % (linux, linux_hash.lower())

    return content


def edgedriver():
    r_stable = http.request("GET", "https://msedgedriver.azureedge.net/LATEST_STABLE")
    stable_version = r_stable.data.decode("utf-16").strip()
    major_version = stable_version.split(".")[0]
    r = http.request(
        "GET",
        f"https://msedgedriver.azureedge.net/LATEST_RELEASE_{major_version}_LINUX",
    )
    linux_version = r.data.decode("utf-16").strip()

    content = ""

    linux = (
        "https://msedgedriver.azureedge.net/%s/edgedriver_linux64.zip" % linux_version
    )
    sha = calculate_hash(linux)
    content = (
        content
        + """
    http_archive(
        name = "linux_edgedriver",
        url = "%s",
        sha256 = "%s",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["msedgedriver"])

js_library(
    name = "msedgedriver-js",
    data = ["msedgedriver"],
)
\"\"\",
    )
"""
        % (linux, sha)
    )

    r = http.request(
        "GET",
        f"https://msedgedriver.azureedge.net/LATEST_RELEASE_{major_version}_MACOS",
    )
    macos_version = r.data.decode("utf-16").strip()
    mac = "https://msedgedriver.azureedge.net/%s/edgedriver_mac64.zip" % macos_version
    sha = calculate_hash(mac)
    content = (
        content
        + """
    http_archive(
        name = "mac_edgedriver",
        url = "%s",
        sha256 = "%s",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["msedgedriver"])

js_library(
    name = "msedgedriver-js",
    data = ["msedgedriver"],
)
\"\"\",
    )
"""
        % (mac, sha)
    )
    return content


def geckodriver():
    content = ""

    r = http.request(
        "GET", "https://api.github.com/repos/mozilla/geckodriver/releases/latest"
    )
    for a in json.loads(r.data)["assets"]:
        if a["name"].endswith("-linux64.tar.gz"):
            url = a["browser_download_url"]
            sha = calculate_hash(url)
            content = (
                content
                + """    http_archive(
        name = "linux_geckodriver",
        url = "%s",
        sha256 = "%s",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["geckodriver"])

js_library(
    name = "geckodriver-js",
    data = ["geckodriver"],
)
\"\"\",
    )
"""
                % (url, sha)
            )

        if a["name"].endswith("-macos.tar.gz"):
            url = a["browser_download_url"]
            sha = calculate_hash(url)
            content = (
                content
                + """
    http_archive(
        name = "mac_geckodriver",
        url = "%s",
        sha256 = "%s",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["geckodriver"])

js_library(
    name = "geckodriver-js",
    data = ["geckodriver"],
)
\"\"\",
    )
"""
                % (url, sha)
            )
    return content


def firefox():
    firefox_versions = json.loads(firefox_version_data())

    latest_firefox = firefox_versions["LATEST_FIREFOX_VERSION"]
    sha_linux = calculate_hash(firefox_linux(latest_firefox))
    sha_mac = calculate_hash(firefox_mac(latest_firefox))
    content = print_firefox(latest_firefox, "", sha_linux, sha_mac)

    beta_firefox = firefox_versions["LATEST_FIREFOX_RELEASED_DEVEL_VERSION"]
    if latest_firefox != beta_firefox:
        sha_linux = calculate_hash(firefox_linux(beta_firefox))
        sha_mac = calculate_hash(firefox_mac(beta_firefox))
    return content + print_firefox(beta_firefox, "beta_", sha_linux, sha_mac)


def firefox_version_data():
    versions = http.request(
        "GET", "https://product-details.mozilla.org/1.0/firefox_versions.json"
    )
    return versions.data


def firefox_linux(version):
    if int(version.split(".")[0]) < 135:
        return (
            "https://ftp.mozilla.org/pub/firefox/releases/%s/linux-x86_64/en-US/firefox-%s.tar.bz2"
            % (version, version)
        )
    else:
        return (
            "https://ftp.mozilla.org/pub/firefox/releases/%s/linux-x86_64/en-US/firefox-%s.tar.xz"
            % (version, version)
        )


def firefox_mac(version):
    return (
        "https://ftp.mozilla.org/pub/firefox/releases/%s/mac/en-US/Firefox%%20%s.dmg"
        % (version, version)
    )


def print_firefox(version, workspace_name, sha_linux, sha_mac):
    content = ""

    content = (
        content
        + f"""    http_archive(
        name = "linux_{workspace_name}firefox",
        url = "{firefox_linux(version)}",
        sha256 = "{sha_linux}",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

filegroup(
    name = "files",
    srcs = glob(["**/*"]),
)

exports_files(["firefox/firefox"])

js_library(
    name = "firefox-js",
    data = [":files"],
)
\"\"\",
    )

"""
    )

    content = (
        content
        + f"""    dmg_archive(
        name = "mac_{workspace_name}firefox",
        url = "{firefox_mac(version)}",
        sha256 = "{sha_mac}",
        build_file_content = \"\"\"
load("@aspect_rules_js//js:defs.bzl", "js_library")
package(default_visibility = ["//visibility:public"])

exports_files(["Firefox.app"])

js_library(
    name = "firefox-js",
    data = glob(["Firefox.app/**/*"]),
)
\"\"\",
    )

"""
    )

    return content


if __name__ == "__main__":
    content = """# This file has been generated using `bazel run scripts:pinned_browsers`

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
load("//common/private:deb_archive.bzl", "deb_archive")
load("//common/private:dmg_archive.bzl", "dmg_archive")
load("//common/private:drivers.bzl", "local_drivers")
load("//common/private:pkg_archive.bzl", "pkg_archive")

def pin_browsers():
    local_drivers(name = "local_drivers")

"""
    content = content + firefox()
    content = content + geckodriver()
    content = content + edge()
    content = content + edgedriver()

    # Stable Chrome
    stable_chrome_info = get_chrome_info_for_channel(channel="Stable")
    content = content + chrome(stable_chrome_info, workspace_prefix="")
    content = content + chromedriver(stable_chrome_info, workspace_prefix="")

    # Beta Chrome
    beta_chrome_info = get_chrome_info_for_channel(channel="Beta")
    content = content + chrome(beta_chrome_info, workspace_prefix="beta_")
    content = content + chromedriver(beta_chrome_info, workspace_prefix="beta_")

    content += """
def _pin_browsers_extension_impl(_ctx):
    pin_browsers()

pin_browsers_extension = module_extension(
    implementation = _pin_browsers_extension_impl,
)
"""

    current_script_dir = Path(os.path.realpath(__file__)).parent
    target_file_path = current_script_dir.parent / "common/repositories.bzl"

    with open(target_file_path, "w") as file:
        file.write(content)
