#!/usr/bin/env python3

# SPDX-FileCopyrightText: 2014 MicroPython & CircuitPython contributors (https://github.com/adafruit/circuitpython/graphs/contributors)
#
# SPDX-License-Identifier: MIT

import json
import os
import subprocess
import sys
import sh
import base64
from datetime import date
from sh.contrib import git

sys.path.append("../docs")
import shared_bindings_matrix

sys.path.append("adabot")
import adabot.github_requests as github

from shared_bindings_matrix import SUPPORTED_PORTS
from shared_bindings_matrix import aliases_by_board

BIN = ("bin",)
UF2 = ("uf2",)
BIN_UF2 = ("bin", "uf2")
HEX = ("hex",)
HEX_UF2 = ("hex", "uf2")
SPK = ("spk",)
DFU = ("dfu",)
BIN_DFU = ("bin", "dfu")

# Default extensions
extension_by_port = {
    "nrf": UF2,
    "atmel-samd": UF2,
    "stm": BIN,
    "cxd56": SPK,
    "mimxrt10xx": HEX_UF2,
    "litex": DFU,
    "esp32s2": BIN_UF2,
    "raspberrypi": UF2,
}

# Per board overrides
extension_by_board = {
    # samd
    "arduino_mkr1300": BIN_UF2,
    "arduino_mkrzero": BIN_UF2,
    "arduino_nano_33_iot": BIN_UF2,
    "arduino_zero": BIN_UF2,
    "feather_m0_adalogger": BIN_UF2,
    "feather_m0_basic": BIN_UF2,
    "feather_m0_rfm69": BIN_UF2,
    "feather_m0_rfm9x": BIN_UF2,
    "uchip": BIN_UF2,
    # nRF52840 dev kits that may not have UF2 bootloaders,
    "makerdiary_nrf52840_mdk": HEX,
    "makerdiary_nrf52840_mdk_usb_dongle": HEX_UF2,
    "pca10056": BIN_UF2,
    "pca10059": BIN_UF2,
    "electronut_labs_blip": HEX,
    # stm32
    "meowbit_v121": UF2,
}

language_allow_list = set([
    "ID",
    "de_DE",
    "en_GB",
    "en_US",
    "en_x_pirate",
    "es",
    "fil",
    "fr",
    "it_IT",
    "ja",
    "nl",
    "pl",
    "pt_BR",
    "sv",
    "zh_Latn_pinyin",
])


def get_languages(list_all = False):
    languages = set()
    for f in os.scandir("../locale"):
        if f.name.endswith(".po"):
            languages.add(f.name[:-3])
    if not list_all:
        languages = languages & language_allow_list
    return sorted(list(languages), key=str.casefold)


def get_board_mapping():
    boards = {}
    for port in SUPPORTED_PORTS:
        board_path = os.path.join("../ports", port, "boards")
        for board_path in os.scandir(board_path):
            if board_path.is_dir():
                board_files = os.listdir(board_path.path)
                board_id = board_path.name
                extensions = extension_by_port[port]
                extensions = extension_by_board.get(board_path.name, extensions)
                aliases = aliases_by_board.get(board_path.name, [])
                boards[board_id] = {
                    "port": port,
                    "extensions": extensions,
                    "download_count": 0,
                    "aliases": aliases,
                }
                for alias in aliases:
                    boards[alias] = {
                        "port": port,
                        "extensions": extensions,
                        "download_count": 0,
                        "alias": True,
                        "aliases": [],
                    }
    return boards


def get_version_info():
    version = None
    sha = git("rev-parse", "--short", "HEAD").stdout.decode("utf-8")
    try:
        version = git("describe", "--tags", "--exact-match").stdout.decode("utf-8").strip()
    except sh.ErrorReturnCode_128:
        # No exact match
        pass

    if "GITHUB_SHA" in os.environ:
        sha = os.environ["GITHUB_SHA"]

    if not version:
        version = "{}-{}".format(date.today().strftime("%Y%m%d"), sha[:7])

    return sha, version


def get_current_info():
    response = github.get("/repos/adafruit/circuitpython-org/git/refs/heads/master")
    if not response.ok:
        print(response.text)
        raise RuntimeError("cannot get master sha")
    commit_sha = response.json()["object"]["sha"]

    response = github.get(
        "/repos/adafruit/circuitpython-org/contents/_data/files.json?ref=" + commit_sha
    )
    if not response.ok:
        print(response.text)
        raise RuntimeError("cannot get previous files.json")

    response = response.json()

    git_info = commit_sha, response["sha"]
    current_list = json.loads(base64.b64decode(response["content"]).decode("utf-8"))
    current_info = {}
    for info in current_list:
        current_info[info["id"]] = info
    return git_info, current_info


def create_json(updated):
    # Convert the dictionary to a list of boards. Liquid templates only handle arrays.
    updated_list = []
    all_ids = sorted(updated.keys())
    for id in all_ids:
        info = updated[id]
        info["id"] = id
        updated_list.append(info)
    return json.dumps(updated_list, sort_keys=True, indent=1).encode("utf-8") + b"\n"


def create_pr(changes, updated, git_info, user):
    commit_sha, original_blob_sha = git_info
    branch_name = "new_release_" + changes["new_release"]
    updated = create_json(updated)
    # print(updated.decode("utf-8"))

    pr_title = "Automated website update for release {}".format(changes["new_release"])
    boards = ""
    if changes["new_boards"]:
        boards = "New boards:\n* " + "\n* ".join(changes["new_boards"])
    languages = ""
    if changes["new_languages"]:
        languages = "New languages:\n* " + "\n* ".join(changes["new_languages"])
    message = "Automated website update for release {} by Blinka.\n\n{}\n\n{}\n".format(
        changes["new_release"], boards, languages
    )

    create_branch = {"ref": "refs/heads/" + branch_name, "sha": commit_sha}
    response = github.post("/repos/{}/circuitpython-org/git/refs".format(user), json=create_branch)
    if not response.ok and response.json()["message"] != "Reference already exists":
        print("unable to create branch")
        print(response.text)
        return

    update_file = {
        "message": message,
        "content": base64.b64encode(updated).decode("utf-8"),
        "sha": original_blob_sha,
        "branch": branch_name,
    }

    response = github.put(
        "/repos/{}/circuitpython-org/contents/_data/files.json".format(user), json=update_file
    )
    if not response.ok:
        print("unable to post new file")
        print(response.text)
        return
    pr_info = {
        "title": pr_title,
        "head": user + ":" + branch_name,
        "base": "master",
        "body": message,
        "maintainer_can_modify": True,
    }
    response = github.post("/repos/adafruit/circuitpython-org/pulls", json=pr_info)
    if not response.ok:
        print("unable to create pr")
        print(response.text)
        return
    print(changes)
    print(pr_info)


def print_active_user():
    response = github.get("/user")
    if response.ok:
        user = response.json()["login"]
        print("Logged in as {}".format(user))
        return user
    else:
        print("Not logged in")
    return None


def generate_download_info():
    boards = {}
    errors = []

    new_tag = os.environ["RELEASE_TAG"]

    changes = {"new_release": new_tag, "new_boards": [], "new_languages": []}

    user = print_active_user()

    sha, this_version = get_version_info()

    git_info, current_info = get_current_info()

    languages = get_languages()

    support_matrix = shared_bindings_matrix.support_matrix_by_board(use_branded_name=False)

    new_stable = "-" not in new_tag

    previous_releases = set()
    previous_languages = set()

    # Delete the release we are replacing
    for board in current_info:
        info = current_info[board]
        for version in list(info["versions"]):
            previous_releases.add(version["version"])
            previous_languages.update(version["languages"])
            if version["stable"] == new_stable or (
                new_stable and version["version"].startswith(this_version)
            ):
                info["versions"].remove(version)

    board_mapping = get_board_mapping()

    for port in SUPPORTED_PORTS:
        board_path = os.path.join("../ports", port, "boards")
        for board_path in os.scandir(board_path):
            if board_path.is_dir():
                board_files = os.listdir(board_path.path)
                board_id = board_path.name
                board_info = board_mapping[board_id]

                for alias in [board_id] + board_info["aliases"]:
                    alias_info = board_mapping[alias]
                    if alias not in current_info:
                        changes["new_boards"].append(alias)
                        current_info[alias] = {"downloads": 0, "versions": []}

                    new_version = {
                        "stable": new_stable,
                        "version": new_tag,
                        "modules": support_matrix[alias],
                        "languages": languages,
                        "extensions": board_info["extensions"],
                    }
                    current_info[alias]["downloads"] = alias_info["download_count"]
                    current_info[alias]["versions"].append(new_version)

    changes["new_languages"] = set(languages) - previous_languages

    if changes["new_release"] and user:
        create_pr(changes, current_info, git_info, user)
    else:
        print("No new release to update")
        if "DEBUG" in os.environ:
            print(create_json(current_info).decode("utf8"))


if __name__ == "__main__":
    if "RELEASE_TAG" in os.environ and os.environ["RELEASE_TAG"]:
        generate_download_info()
    else:
        print("skipping website update because this isn't a tag")
