#####################################
##       PEinjector/loader         ##
#####################################

import utils
import os
import shutil
import log
import json
import traceback
import config
import action

loaded_package = []
loaderr_pkgs = []
disk = ""
lists = []


def version_check(file_json, pkg_name):
    try:
        if "compatibility" in file_json:
            if "injector" in file_json["compatibility"]:
                with open(f"{disk}/PEinjector/VERSION", "r", encoding="utf-8") as file:
                    version = file.readlines()[0].rstrip("\n\r")
                if "min" in file_json["compatibility"]["injector"]:
                    plugver = file_json["compatibility"]["injector"]["min"]

                    def vererr():
                        log.warn(f"load moudle [{pkg_name}] failed: " +
                                 f"PEinjector version too low, need [{plugver}]")
                    if int(plugver.split(".")[0]) > int(version.split(".")[0]):
                        vererr()
                        return 5
                    elif int(plugver.split(".")[0]) == int(version.split(".")[0]):
                        if plugver.split(".")[1] > version.split(".")[1]:
                            vererr()
                            return 5
                        elif int(plugver.split(".")[1]) == int(version.split(".")[1]):
                            if int(plugver.split(".")[2]) > int(version.split(".")[2]):
                                vererr()
                                return 5
                if "max" in file_json["compatibility"]["injector"]:
                    plugver = file_json["compatibility"]["injector"]["max"]

                    def vererr():
                        log.warn(f"load moudle [{pkg_name}] failed: " +
                                 f"PEinjector version too high, need [{plugver}]")
                    if int(plugver.split(".")[0]) < int(version.split(".")[0]):
                        vererr()
                        return 6
                    elif int(plugver.split(".")[0]) == int(version.split(".")[0]):
                        if int(plugver.split(".")[1] < version.split(".")[1]):
                            vererr()
                            return 6
                        elif plugver.split(".")[1] == version.split(".")[1]:
                            if int(plugver.split(".")[2] < version.split(".")[2]):
                                vererr()
                                return 6
    except:
        log.warn(f"load moudle [{pkg_name}] failed: " +
                 "The version number is formatted incorrectly")
        return 7
    return 0


def file_check(file_json, pkg_name):
    try:
        if "compatibility" in file_json:
            if "file" in file_json["compatibility"]:
                if "must" in file_json["compatibility"]["file"]:
                    for i in file_json["compatibility"]["file"]["must"]:
                        if not os.path.exists(i):
                            log.warn(f"load moudle [{pkg_name}] failed: " +
                                     f"Cannot find file: [{i}]")
                            return 8
                if "mustnot" in file_json["compatibility"]["file"]:
                    for i in file_json["compatibility"]["file"]["mustnot"]:
                        if os.path.exists(i):
                            log.warn(f"load moudle [{pkg_name}] failed: " +
                                     f"Find incompatible file: [{i}]")
                            return 9

    except:
        log.warn(f"load moudle [{pkg_name}] failed: " +
                 "Unknown error in file check")
        return 10
    return 0


actions = {"onboot": [], "onload": []}


def load_package(pkg_name):
    pkg_path = f"{disk}/PEinjector/package/{pkg_name}"
    loaded_package.append(pkg_name)
    if "manifest.json" not in os.listdir(pkg_path):
        log.warn(f"load moudle [{pkg_name}] failed: " +
                 "Cannot find manifest.json")
        return 1
    try:
        with open(pkg_path+"/"+"manifest.json", "r", encoding="utf-8") as file:
            file_str = file.read()
    except Exception as exp:
        log.warn(f"load moudle [{pkg_name}] failed: " +
                 "Unknown error in read file ("+repr(exp)+")")
        return 2
    try:
        file_json = json.loads(file_str)
    except:
        log.warn(f"load moudle [{pkg_name}] failed: " +
                 "Json syntax error")
        return 3
    for i in ("version", "name", "author", "introduce"):
        if i not in file_json:
            log.warn(f"load moudle [{pkg_name}] failed: " +
                     f"\"{i}\" key not in manifest.json")
            return 4
    retvar = version_check(file_json, pkg_name)
    if retvar != 0:
        return retvar
    retvar = file_check(file_json, pkg_name)
    if retvar != 0:
        return retvar
    if "dependence" in file_json:
        try:
            for i in file_json["dependence"]:
                if i not in lists:
                    log.warn(f"load moudle [{pkg_name}] failed: " +
                             f"Cannot find dependence [{i}]")
                    return 11
                if retvar in loaderr_pkgs:
                    log.warn(f"load moudle [{pkg_name}] failed: " +
                             f"dependence [{i}] loaded failed")
                    return 12
                if retvar not in loaded_package:
                    log.info(f"load moudle [{i}] from [{pkg_name}]")
                    retvar = load_package(i)
                    if retvar != 0:
                        loaderr_pkgs.append(i)
                        log.warn(f"load moudle [{pkg_name}] failed: " +
                                 f"dependence [{i}] loaded failed")
                        return 12
        except:
            log.warn(f"load moudle [{pkg_name}] failed: " +
                     f"Cannot find dependence [{i}]")
    data_list = []
    if "data" in file_json:
        j = -1
        prep_flag = False
        if pkg_name not in os.listdir(config.DATAPATH.replace("{DISK}", utils.find_disk())):
            log.info(f"prep moudle [{pkg_name}] data")
            prep_flag = True
        for i in file_json["data"]:
            j += 1
            flag = False
            for event in ("from", "to"):
                if event not in i or i[event] == "":
                    log.warn(f"load moudle [{pkg_name}] warning: " +
                             f"Load data syntax error on {event}[{j}] (lost \"{event}\"), igrone")
                    flag = True
                    break
            if flag:
                continue
            data_list.append(i)
            if prep_flag:
                data_dir = config.DATAPATH.replace(
                    "{DISK}", utils.find_disk())+"/"+pkg_name
                os.mkdir(data_dir)
                if os.path.isfile(pkg_path+"/"+i["from"]):
                    shutil.copyfile((
                        pkg_path+"/"+i["from"]).replace("/", "\\"), (data_dir+"/"+i["to"]))
                else:
                    shutil.copytree(
                        pkg_path+"/"+i["from"], data_dir+"/"+i["to"])

    if "load" in file_json:
        open_symlink = config.USE_SYMLINK
        if "symlink" in file_json["load"] and file_json["load"] == False:
            open_symlink = False
        if "mode" in file_json["load"]:
            for event in ("onboot", "onload"):
                if event not in file_json["load"]["mode"]:
                    continue
                actions[event].append((0, pkg_name))
                if type(file_json["load"]["mode"][event]) != list:
                    log.warn(f"load moudle [{pkg_name}] failed: " +
                             f"Load commands syntax error on {event} (must be a list)")
                    return 13
                j = -1
                for i in file_json["load"]["mode"][event]:
                    j += 1
                    if "type" not in i:
                        log.warn(f"load moudle [{pkg_name}] warning: " +
                                 f"Load commands syntax error on {event}[{j+1}] (lost \"type\"), igrone")
                        continue
                    if i["type"] == "force_copy" or (i["type"] == "copy" and open_symlink == False):
                        flag = False
                        for check in ("from", "to"):
                            if check not in i:
                                flag = True
                                log.warn(f"load moudle [{pkg_name}] warning: " +
                                         f"Load commands syntax error on {event}[{j+1}] (lost \"{check}\"), igrone")
                                break
                        if flag:
                            continue
                        if not os.path.exists(pkg_path+"/"+i["from"]):
                            log.warn(f"load moudle [{pkg_name}] warning: " +
                                     f"Load commands file error on {event}[{j+1}] (cannot find \"{i['from']}\"), igrone")
                            continue
                        actions[event] += action.force_copy(pkg_path,
                                                            pkg_name, data_list, i["from"], i["to"])
                    elif i["type"] == "copy":
                        flag = False
                        for check in ("from", "to"):
                            if check not in i:
                                flag = True
                                log.warn(f"load moudle [{pkg_name}] warning: " +
                                         f"Load commands syntax error on {event}[{j+1}] (lost \"{check}\"), igrone")
                                break
                        if flag:
                            continue
                        if not os.path.exists(pkg_path+"/"+i["from"]):
                            log.warn(f"load moudle [{pkg_name}] warning: " +
                                     f"Load commands file error on {event}[{j+1}] (cannot find \"{i['from']}\"), igrone")
                            continue
                        actions[event] += action.copy(pkg_path, pkg_name, data_list,
                                                      i["from"], i["to"])
                    elif i["type"] == "start":
                        flag = False
                        for check in ("command", ):
                            if check not in i:
                                flag = True
                                log.warn(f"load moudle [{pkg_name}] warning: " +
                                         f"Load commands syntax error on {event}[{j+1}] (lost \"{check}\"), igrone")
                                break
                        if flag:
                            continue
                        actions[event] += action.start(
                            pkg_name, data_list, i["command"])
                    else:
                        log.warn(f"load moudle [{pkg_name}] warning: " +
                                 f"Load commands syntax error on {event}[{j+1}] (unknown type), igrone")


def load():
    try:
        global disk, lists
        log.info("start load")
        disk = utils.find_disk()
        lists = os.listdir(f"{disk}/PEinjector/package")
        with open(config.DISABLEPATH.replace("{DISK}", disk), "r") as file:
            disable_packages = [i.rstrip("\n\r") for i in file.readlines()]
        for packs in lists:
            if packs not in loaded_package and packs not in disable_packages:
                log.info(f"load moudle [{packs}]")
                retvar = load_package(packs)
                if retvar == 0:
                    loaderr_pkgs.append(packs)
        filename = action.save_action(actions["onload"])
        alog = action.do_action(actions["onboot"])
        with open(config.ACTIONLOGPATH.replace("{DISK}", utils.find_disk()), "w") as file:
            file.write(alog)
        os.system(f'..\\env\\pythonw.exe hook.py "{filename}"')
    except Exception as exp:
        log.break_err("Exception \n"+str(traceback.format_exc(exp)))
        raise exp