from helpers import *
from basecommands import simplecommand, Validate
import org.bukkit.Material as Material
import java.util.UUID as UUID
import org.bukkit.Material as Material
import org.bukkit.block.BlockFace as BlockFace
from math import ceil

commands_whitelist = (
    "mail", "email", "memo",
    "echo", "ping", 
    "cg join",
    "cg info",
    "chatgroup join",
    "chatgroup info",
    "i",
    "item",
    "p h", "plot home", "plot h", "p home", "plotme home", "plotme h",
    "up",
    "tppos",
    "seen",
)

max_line_length = 256
max_lines = 20
help_page_size = 12

def load_signs():
    signs_obj = open_json_file("serversigns", [])
    loaded = {}
    for entry in signs_obj:
        loaded[tuple(entry[:4])] = list(entry[4:])
    return loaded

def save_signs():
    signs_obj = []
    for key, value in signs.iteritems():
        signs_obj.append(key + tuple(value))
    save_json_file("serversigns", signs_obj)

# {("world", x, y, z): ["owner_id", "msg1", "msg2"]}
signs = load_signs() 

# Accumulated messages so players can have longer messages: {"Dico200": "Message...........", ""}
lines = {}

def fromLoc(bLoc):
    """
      # Returns a tuple containing the (bukkit)location's world's name and its x, y and z coordinates
      # The format for the tuple is ("world_name", x, y, z)
    """
    return (bLoc.getWorld().getName(), bLoc.getBlockX(), bLoc.getBlockY(), bLoc.getBlockZ())

def equals(loc1, loc2):
    """
      # Returns whether loc1 and loc2 represent the same block
    """
    for i in range(4):
        if loc1[i] != loc2[i]:
            return False
    return True

def getOwner(sign):
    """
      # Returns the name of the sign its owner
    """
    return retrieve_player(sign[0]).getName()

def isOwner(sign, player):
    """
      # Returns whether the given player owns the sign
    """ 
    return sign and sign[0] == uid(player)

def canEdit(sign, player):
    """ 
      # Returns whether the given player can edit the sign.
      # Returns False if the sign wasn't claimed.
    """
    return (sign and player.hasPermission("utils.serversigns.admin")) or isOwner(sign, player)

def getSign(locAt):
    """
      # If data was found for a sign at the given location, returns the data.
      # This data follows the format of ["owner_id", "msg1", "msg2"...].
    """
    for loc, sign in signs.iteritems():
        if equals(locAt, loc):
            return sign
    return None

def identifySign(loc):
    """
      # Returns a string from which the user can tell what sign you're talking about.
      # The string follows the format of "sign at (x,y,z) in world_name".
    """
    return "sign at (%s) in %s" % (",".join((str(i) for i in loc[1:])), loc[0])

def signsMsg(msg, colour = '4'):
    """
      # Returns the given msg, prefixed with '[Signs] '.
      # The given colour is after applied to the msg.
      # The colour defaults to 4 (dark red).
    """
    return "&c[Signs] &" + colour + msg


# /svs command


subcommand_info = (

    (("claim",), (
        "Claims the sign so that you can add messages to it", 
    ), (("[owner]", "claims.other"),)),
    (("info", "lines"), (
        "Displays information about the (claimed) sign",
    )),
    (("add",), (
        "Adds the message to the sign. Use ++ at the end",
        "to add the message to your buffer. You can then use",
        "the same command again to create a longer message",
    ), (("<message>[++]", None),)),
    (("remove", "rem", "del", "delete"), (
        "Removes the message with the given ID from the sign.",
        "The ID is given before each message by &b/svs info&a.",
    ), (("<message ID>", None),)),
    (("switch", "reverse"), (
        "Reverses the order in which the given messages are shown.",
    ), (("<message ID 1> <message ID 2>", None),)),
    (("clear",), (
        "Removes all messages from the sign.",
    )),
    (("reset", "unclaim"), (
        "Resets the sign, removing all messages and its owner.",
    )),
    (("whitelist", "commands", "wl"), (
        "Displays a list of whitelisted commands",
    )),
    (("help",), (
        "Displays this help page",
    ), (("[page]", None),)),

)



@simplecommand(cmd = "serversigns", aliases = ["svs", "signmsg"],
    description = "Makes something happen when you right click signs. \nUse /svs help for more details.",
    usage = "<claim|reset|add <msg>[++]|remove <ID>|clear|info|help>",
    helpNoargs = True,
    senderLimit = 0)
def svs_command(sender, command, label, args):
    arg1 = args[0].lower()

    cmd_info = None
    for cmd in subcommand_info:
        if arg1 in cmd[0]:
            cmd_info = cmd
            break

    Validate.notNone(cmd_info, signsMsg("That command could not be recognized, use &o/svs help &4for expected arguments"))
    cmd = cmd_info[0][0]
    Validate.isAuthorized(sender, "utils.serversigns." + cmd)

    #-------------------- Sub commands that don't require any conditions -----------------------
    if cmd == "help":
        all_lines = [
            "&aServer signs let's you add messages to a sign.",
            "Right clicking the sign will display all the messages. Commands",
            "can also be added, by prefixing the message with a '/'.",
            "How to use &b/serversigns&a:",
        ]

        for cmd in subcommand_info:
            if sender.hasPermission("utils.serversigns." + cmd[0][0]):
                params = ""
                if len(cmd) == 3:
                    for param, perm in cmd[2]:
                        if perm is None or sender.hasPermission("utils.serversigns." + perm):
                            params += param + " "
                all_lines.append("&b/svs %s %s" % ("|".join(cmd[0]), params))
                for info_line in cmd[1]:
                    all_lines.append("&a- " + info_line)

        last_page = int(ceil(len(all_lines) / help_page_size))
        info("last page: %d" % last_page)
        page = 1
        if len(args) > 1 and args[1].isdigit():
            page = int(args[1])
            if page <= 0:
                page = 1
            elif page > last_page:
                page = last_page

        first_line = signsMsg("Serversigns help page %d" % page, '6')
        if page < last_page:
            first_line += ", &e/svs help %d&6 for the next" % (page + 1)
        page_lines = [first_line] + all_lines[(page - 1) * help_page_size : min(page * help_page_size, len(all_lines))]
        return "\n".join(page_lines)


    if cmd == "whitelist":
        return signsMsg("Whitelisted commands: &3" + ", ".join(commands_whitelist), 'a')
    #-------------------------------------------------------------------------------------------

    block = sender.getTargetBlock(None, 5)
    Validate.isTrue(block.getType() in (Material.SIGN_POST, Material.WALL_SIGN), signsMsg("You have to be looking at a sign to use that!"))

    loc      = fromLoc(block.getLocation())
    sign     = getSign(loc)
    signName = identifySign(loc)
    arg2     = args[1].lower() if len(args) > 1 else None

    #------------------------ Sub commands that require the block to be a sign -------------------------------
    if cmd == "claim":
        Validate.isTrue(not sign, signsMsg("The %s was already claimed" % signName))
        Validate.isTrue(can_build2(sender, block), signsMsg("You are not permitted to claim signs here"))
        target = sender
        if arg2:
            Validate.isTrue(player.hasPermission("utils.serversigns.admin"), signsMsg("You are not authorized to claim signs for other players"))
            target = server.getOfflinePlayer(arg2)
            Validate.notNone(target, signsMsg("That player could not be found"))
            Validate.isTrue(target.isOnline(), signsMsg("The target has to be online"))
        uuid = uid(target)
        if sign != None:
            if sign[0] == uuid:
                return signsMsg("The " + signName + " was already owned by that player")
            else:
                sign[0] = uuid
        else:
            signs[loc] = [uuid]
        save_signs()
        return signsMsg("Claimed the " + signName + ((" for %s" % target.getName()) if (target != sender) else ""), 'a')
    #----------------------------------------------------------------------------------------------------------

    Validate.notNone(sign, signsMsg("The %s has not been claimed" % signName))

    #----------------------Sub commands that require the sign to be claimed as well------------------------------------
    if cmd == "info":
        sign_lines = ""
        for id, line in enumerate(sign[1:]):
            sign_lines += ("\n &a%s: \"&f%s&a\"" % (id + 1, line))
        return signsMsg("Properties of the %s:\n Owner: %s\n Lines: %s" % (signName, getOwner(sign), sign_lines), 'a')
    #---------------------------------------------------------------------------------------------------------------

    Validate.isTrue(canEdit(sign, sender), signsMsg("You do not own the %s!" % signName))

    #---------------------- Sub commands that require you to own targeted sign as well -------------------------
    if cmd == "add":
        Validate.isTrue(len(sign) - 1 <= max_lines, signsMsg("This sign already has the maximum amount of lines, you cannot add more"))

        line = " ".join(args[1:])
        Validate.isTrue(line != "" and line != None, signsMsg("You have to enter a message to add or accumulate"))
        key  = sender.getName()
        global lines
        Validate.isTrue(key in lines or line[:1] != "/" or sender.hasPermission("utils.serversigns.command"), signsMsg("You cannot add commands to a sign!"))

        if line[-2:] == "++":
            if key not in lines:
                lines[key] = ""
            Validate.isTrue(len(lines[key]) + len(line[:-2]) + 1 <= max_line_length, signsMsg("This line would be too long, so the given message was not added to the accumulated message"))
            lines[key] += " " + line[:-2]
            return signsMsg("Added given message to the message you're accumulating. \nYour accumulated message is now as follows: \n&f%s" % lines[key], 'a')

        if key in lines:
            line = (lines[key] + " " + line)[1:]
            Validate.isTrue(len(line) <= max_line_length, signsMsg("This line would be too long, so it was not added to the sign. It is however still accumulated."))

        if line[0] == "/":
            cmd = line[1:].lower()
            whitelisted = False
            for wl_cmd in commands_whitelist:
                if cmd[:len(wl_cmd)] == wl_cmd:
                    whitelisted = True
                    break
            Validate.isTrue(whitelisted, signsMsg("That command is not whitelisted for use with serversigns"))

        if key in lines:
            del lines[key]

        sign.append(colorify(line) if line[0] != "/" else line)
        save_signs()
        return signsMsg("Added line \"&f%s&a\" to the %s" % (line, signName), 'a')


    if cmd == "remove":
        Validate.notNone(arg2, signsMsg("You have to enter the ID of the message to remove!"))
        try:
            id = int(arg2)
        except:
            return signsMsg("The ID of the message has to be a number and can be found by using &o/svs info")
        Validate.isTrue(id != 0 and id < len(sign), signsMsg("The %s has no message with an ID of %s, use &o/svs info &4for all messages." % (signName, id)))
        del sign[id]
        return signsMsg("Removed message with id %s from the %s" % (id, signName), 'a')


    if cmd == "switch":
        Validate.isTrue(len(args) == 3, signsMsg("You have to enter the 2 IDs of the messages to reverse"))
        try:
            id1 = int(args[1])
            id2 = int(args[2])
        except:
            return signsMsg("The ID of the message has to be a number and can be found by using &o/svs info")
        for id in (id1, id2):
            Validate.isTrue(id != 0 and id < len(sign), signsMsg("The %s has no message with an ID of %s, use &o/svs info &4for all messages." % (signName, id)))
        sign[id1], sign[id2] = sign[id2], sign[id1]
        save_signs()
        return signsMsg("Reversed the messages with IDs %s and %s of the %s" % (id1, id2, signName), 'a')


    if cmd == "clear":
        signs[loc] = [sign[0]]
        save_signs()
        return signsMsg("Removed all messages from the %s" % signName, 'a')


    if cmd == "reset":
        del signs[loc]
        save_signs()
        return signsMsg("Removed all messages and the owner from the %s, it can now be claimed" % signName, 'a')

    #-------------------------------------------------------------------------------------------------------


@hook.event("player.PlayerInteractEvent")
def on_click(event):
    if str(event.getAction()) != "RIGHT_CLICK_BLOCK":
        return
    block = event.getClickedBlock()
    if block.getType() not in (Material.WALL_SIGN, Material.SIGN_POST):
        return
    sign = getSign(fromLoc(block.getLocation()))
    if sign != None:
        player = event.getPlayer()
        for message in sign[1:]:
            if message[:1] == "/":
                server.dispatchCommand(player, message[1:])
            else:
                msg(player, message, usecolor = False)

# ---------------------------Sign breaking--------------------------------

checking_block = False

faces = {
    BlockFace.NORTH : (0,1,2,),
    BlockFace.SOUTH : (3,),
    BlockFace.WEST  : (4,),
    BlockFace.EAST  : (5,),
}

@hook.event("block.BlockBreakEvent", "monitor")
def on_break(event):
    if checking_block or event.isCancelled():
        return

    block = event.getBlock()
    if block.getType() in (Material.SIGN_POST, Material.WALL_SIGN):
        check_sign(event, block, attached = False)

    for block_face, data_values in faces.iteritems():
        block2 = block.getRelative(block_face)
        if block2.getType() == Material.WALL_SIGN and block2.getData() in data_values:
            check_sign(event, block2)

    block3 = block.getRelative(BlockFace.UP)
    if block3.getType() == Material.SIGN_POST:
        check_sign(event, block3)


def check_sign(event, block, attached = True):
    player = event.getPlayer()
    loc = fromLoc(block.getLocation())
    if block.getType() not in (Material.WALL_SIGN, Material.SIGN_POST) or getSign(loc) is None:
        return
    if not can_build2(player, block):
        event.setCancelled(True)
        msg(event.getPlayer(), signsMsg("You cannot break %s" % ("the sign attached to that block" if attached else "that sign")))
    else:
        del signs[loc]
        save_signs()
        msg(player, signsMsg("Reset the %s which you just broke" % identifySign(loc)))


def can_build2(player, block):
    global checking_block
    event = BlockBreakEvent(block, player)
    checking_block = True
    server.getPluginManager().callEvent(event)
    checking_block = False
    return not event.isCancelled()


def check_all_signs_and_force_commands():
    for loc in signs:
        if server.getWorld(loc[0]).getBlockAt(loc[1], loc[2], loc[3]).getType() not in (Material.WALL_SIGN, Material.SIGN_POST):
            del signs[loc]

    try:
        map_field = server.getPluginManager().getClass().getDeclaredField("commandMap")
        map_field.setAccessible(True)
        command_map = map_field.get(server.getPluginManager())

        commands_field = command_map.getClass().getDeclaredField("knownCommands")
        commands_field.setAccessible(True)
        map = commands_field.get(command_map)

        rsutils_cmd = map.get("redstonerutils:serversigns")
        map.put("svs", rsutils_cmd)
        map.put("serversigns", rsutils_cmd)
        map.put("signsmsg", rsutils_cmd)

    except:
        error("[Serversigns] failed to force commands")
        error(trace())