local addonname, shared = ...
---@cast addonname string

local _L = {
    ["EN"] = {
        ["NO_MESSAGE"] = "Yapper found no message to yap",
        ["NO_CHANNEL"] = "Yapper found no channel to yap in",
        ["NO_CHANNEL_ID"] = "Yapper found no channel id for %s",
        ["NO_INTERVAL"] = "Yapper has no interval set",
        ["YAPPER_TOGGLE"] = "Yapper is now %s",
        ["YAPPER_INTERVAL_SET"] = "Yapper interval set to %d",
        ["YAPPER_MESSAGE_SET"] = "Yapper message set to %s",
        ["YAPPER_CHANNEL_SET"] = "Yapper channel set to %s with data %s",
        ["YAPPER_CHANNEL_SET_NIL"] = "Yapper channel set to nil",
        ["YAPPER_LANGUAGE_SET"] = "Yapper language set to %s",
        ["YAPPER_LANGUAGE_NOT_FOUND"] = "Yapper language not found",
        ["YAPPER_ENABLED"] = "enabled",
        ["YAPPER_DISABLED"] = "disabled",
        ["NO_WHISPER_TARGET"] = "Yapper found no whisper target"
    },
    ["RU"] = {
        ["NO_MESSAGE"] = "Болтун не нашел сообщение для болтовни",
        ["NO_CHANNEL"] = "Болтун не нашел канал для болтовни",
        ["NO_CHANNEL_ID"] = "Болтун не нашел ID канала для %s",
        ["NO_INTERVAL"] = "У Болтуна не установлен интервал",
        ["YAPPER_TOGGLE"] = "Болтун теперь %s",
        ["YAPPER_INTERVAL_SET"] = "Интервал Болтуна установлен на %d",
        ["YAPPER_MESSAGE_SET"] = "Сообщение Болтуна установлено на %s",
        ["YAPPER_CHANNEL_SET"] = "Канал Болтуна установлен на %s с данными %s",
        ["YAPPER_CHANNEL_SET_NIL"] = "Канал Болтуна установлен в nil",
        ["YAPPER_LANGUAGE_SET"] = "Язык Болтуна установлен на %s",
        ["YAPPER_LANGUAGE_NOT_FOUND"] = "Язык Болтуна не найден",
        ["YAPPER_ENABLED"] = "включен",
        ["YAPPER_DISABLED"] = "выключен",
        ["NO_WHISPER_TARGET"] = "Болтун не нашел цель для болтовни"
    }
}

local function GetOrDefault(table, keys, default)
    local value = default
    if not table then return value end
    if not keys then return value end

    local traverse = table
    for i = 1, #keys do
        local key = keys[i]
        if traverse[key] ~= nil then
            traverse = traverse[key]
        else
            break
        end

        if i == #keys then
            value = traverse
        end
    end
    return value
end

local function GetChannelId(channelName)
    local channels = { GetChannelList() }
    for i = 1, #channels, 2 do
        local id = channels[i]
        local name = channels[i + 1]
        if name == channelName then
            return id
        end
    end
end

---@class YapperConfig
---@field message string
---@field interval number
---@field channel string
---@field channelData any
---@field enabled boolean
---@field language string

---@cast shared { config: YapperConfig}

local timer = nil

local function Yap()
    if not shared.config.enabled then return end
    if not shared.config.message then
        print(string.format(_L[shared.config.language]["NO_MESSAGE"], tostring(shared.config.message)))
        shared.config.enabled = false
        return
    end
    if not shared.config.channel then
        print(string.format(_L[shared.config.language]["NO_CHANNEL"], tostring(shared.config.channel)))
        shared.config.enabled = false
        return
    end

    local data = shared.config.channelData
    if shared.config.channel == "CHANNEL" and not tonumber(shared.config.channelData) then
        data = GetChannelId(shared.config.channelData)
        if data == nil then
            print(string.format(_L[shared.config.language]["NO_CHANNEL_ID"], shared.config.channelData))
            shared.config.enabled = false
            return
        end
    end
    if shared.config.channel == "WHISPER" and not shared.config.channelData then
        print(string.format(_L[shared.config.language]["NO_WHISPER_TARGET"], shared.config.channelData))
        shared.config.enabled = false
        return
    end
    SendChatMessage(shared.config.message, shared.config.channel, nil, data)

    if not shared.config.interval or shared.config.interval <= 0 then
        print(string.format(_L[shared.config.language]["NO_INTERVAL"], tostring(shared.config.interval)))
        shared.config.enabled = false
        return
    end
    timer = C_Timer.NewTimer(shared.config.interval, Yap)
end

local function init()
    if not shared.config.enabled then return end
    if timer and not timer:IsCancelled() then timer:Cancel() end
    Yap()
end

local loadedFrame = CreateFrame("Frame")
loadedFrame:RegisterEvent("ADDON_LOADED")
loadedFrame:SetScript("OnEvent", function(self, event, addonName)
    if addonName == addonname then
        if not YapperConfig then YapperConfig = {} end
        shared.config = {
            message = GetOrDefault(YapperConfig, { "message" }, ""),
            interval = GetOrDefault(YapperConfig, { "interval" }, 1),
            channel = GetOrDefault(YapperConfig, { "channel" }, "SAY"),
            channelData = GetOrDefault(YapperConfig, { "channelData" }, nil),
            enabled = GetOrDefault(YapperConfig, { "enabled" }, false),
            language = GetOrDefault(YapperConfig, { "language" }, "EN"),
        }
    end
end)

local logoutFrame = CreateFrame("Frame")
logoutFrame:RegisterEvent("PLAYER_LOGOUT")
logoutFrame:SetScript("OnEvent", function(self, event)
    shared.config.enabled = false
    YapperConfig = shared.config
end)

SlashCmdList["YAPPER_MAIN_CMD"] = function(input)
    if input == "" or input == nil then
        shared.config.enabled = not shared.config.enabled
        print(string.format(_L[shared.config.language]["YAPPER_TOGGLE"],
            shared.config.enabled and _L[shared.config.language]["YAPPER_ENABLED"] or
            _L[shared.config.language]["YAPPER_DISABLED"]))
        init()
        return
    end

    if tonumber(input) then
        shared.config.interval = tonumber(input)
        print(string.format(_L[shared.config.language]["YAPPER_INTERVAL_SET"], shared.config.interval))
        init()
        return
    end

    shared.config.message = input
    print(string.format(_L[shared.config.language]["YAPPER_MESSAGE_SET"], shared.config.message))
    init()
end
SLASH_YAPPER_MAIN_CMD1 = "/yap"

SlashCmdList["YAPPER_CHANNEL_CMD"] = function(input)
    if input == "" or input == nil then
        shared.config.channel = nil
        shared.config.channelData = nil
        print(_L[shared.config.language]["YAPPER_CHANNEL_SET_NIL"])
        return
    end

    local data = { strsplit(" ", input) }
    if #data == 1 then
        shared.config.channel = string.upper(data[1])
        shared.config.channelData = nil
        print(string.format(_L[shared.config.language]["YAPPER_CHANNEL_SET"],
            tostring(shared.config.channel),
            tostring(shared.config.channelData)))
        return
    end
    shared.config.channel = string.upper(data[1])
    shared.config.channelData = data[2]
    print(string.format(_L[shared.config.language]["YAPPER_CHANNEL_SET"],
        tostring(shared.config.channel),
        tostring(shared.config.channelData)))
end
SLASH_YAPPER_CHANNEL_CMD1 = "/yapc"

SlashCmdList["YAPPER_LANGUAGE_CMD"] = function(input)
    input = string.upper(input)
    if input == "" or input == nil then
        input = "EN"
    end
    if _L[input] == nil then
        print(_L[shared.config.language]["YAPPER_LANGUAGE_NOT_FOUND"])
        return
    end
    shared.config.language = input
    print(string.format(_L[shared.config.language]["YAPPER_LANGUAGE_SET"], shared.config.language))
end
SLASH_YAPPER_LANGUAGE_CMD1 = "/yapl"