local _, addon = ...

local TACTIC_TAB_ID = 9

local CURRENT_TAB_ID = 0
local PREVIOUS_TAB_ID = 0

local ENCOUNTER_ID = 0
local DIFFICULTY = 0

local function HideOtherContent()
    local frames = { "overviewScroll", "LootContainer", 'detailsScroll', 'model', 'encounterTitle' }
    for _, frame in ipairs(frames) do
        EncounterJournal.encounter.info[frame]:Hide();
    end

    local tabs = { "overviewTab", "lootTab", "bossTab", "modelTab" }
    for _, tab in ipairs(tabs) do
        EncounterJournal.encounter.info[tab].selected:Hide();
        EncounterJournal.encounter.info[tab].unselected:Show();
        EncounterJournal.encounter.info[tab]:UnlockHighlight();
    end

    if EncounterJournal.encounter.info.creatureButtons then
        for _, button in pairs(EncounterJournal.encounter.info.creatureButtons) do
            button:Hide()
        end
    end

    addon.TacticFrame:ClearHeaders()
end

local function RenderBossTactics(frame, bossName)
    HideOtherContent()
    local bossData = addon.data.tactic[bossName]

    local difficulty = 'lfr' -- 17
    if DIFFICULTY == 14 then
        difficulty = 'normal'
    elseif DIFFICULTY == 15 then
        difficulty = 'heroic'
    elseif DIFFICULTY == 16 then
        difficulty = 'mythic'
    elseif DIFFICULTY == 1 then
        difficulty = 'normal'
    elseif DIFFICULTY == 2 then
        difficulty = 'heroic'
    elseif DIFFICULTY == 23 then
        difficulty = 'mythic'
    end

    local tactic = bossData and bossData[1][difficulty] or nil

    if not tactic then
        frame.summary:SetText("Boss " .. bossName .. " nemá pro tuto obtížnost přeloženou taktiku.")
        frame:GetParent():Show()
        return
    end

    local function CreateHeaderDescription(data)
        local description = ""
        for _, item in ipairs(data) do
            description = description
                    .. item.name .. "\n"
                    .. "|cff003366" .. item.description .. "|r "
                    .. "|cff004400" .. item.howTo .. "|r "
                    .. "|cff8b0000" .. item.dangerous .. "|r"
                    .. "\n\n"
        end
        return description
    end

    frame.summary:SetText(tactic.summary)

    local tankHeader = frame:CreateHeader()
    tankHeader.button.title:SetText("Tank")
    tankHeader.description:SetText(CreateHeaderDescription(tactic.tank))

    local healHeader = frame:CreateHeader()
    healHeader.button.title:SetText("Healer")
    healHeader.description:SetText(CreateHeaderDescription(tactic.heal))

    local dpsHeader = frame:CreateHeader()
    dpsHeader.button.title:SetText("DPS")
    dpsHeader.description:SetText(CreateHeaderDescription(tactic.dps))

    frame:GetParent():Show()
    frame:UpdateHeaderPositions()
end

local function CreateCreaturesDropdown()
    local frame = addon.TacticFrame
    local encounterName = EJ_GetEncounterInfo(ENCOUNTER_ID)

    local options = {}
    local selectedValue = nil

    for i = 1, 10 do
        local id, name = EJ_GetCreatureInfo(i);
        if id then
            if addon.data.tactic[name] then
                table.insert(options, { name, name })
            end
        end
    end

    if #options > 0 then
        selectedValue = options[1][2]
    end

    local function IsSelected(value)
        return value == selectedValue
    end

    local function SetSelected(value)
        if value then
            RenderBossTactics(addon.TacticFrame, value)
        end
        selectedValue = value
    end

    MenuUtil.CreateRadioMenu(frame.dropdown, IsSelected, SetSelected, unpack(options))

    if #options > 0 then
        SetSelected(selectedValue)
    end

    if #options == 0 then
        frame.summary:SetText("V souboji " .. encounterName .. " není boss, který má přeloženou taktikou.")
        frame:GetParent():Show()
        frame.dropdown:Hide()
    end
end

local function HideTacticNpcs()
    addon.TacticFrame:GetParent():Hide()
    addon.TacticFrame.dropdown:Hide()
end

local function ShowTacticNpcs()
    CURRENT_TAB_ID = TACTIC_TAB_ID
    HideOtherContent()

    local frame = addon.TacticFrame

    frame.tab:SetHighlight(true);
    frame.dropdown:Show()

    EncounterJournal.encounter.info.rightShadow:Show()
    EncounterJournal.encounter.info.difficulty:Show()

    CreateCreaturesDropdown()
end

local function SetupCustomTab()
    addon.TacticFrame.tab:SetScript("OnClick", function()
        ShowTacticNpcs()
    end)

    hooksecurefunc("EncounterJournal_DisplayEncounter", function(encounterID)
        ENCOUNTER_ID = encounterID
        addon.TacticFrame.tab:SetActive(true);

        if CURRENT_TAB_ID == TACTIC_TAB_ID then
            ShowTacticNpcs()
        end
    end)

    hooksecurefunc("EncounterJournal_DisplayInstance", function()
        addon.TacticFrame.tab:SetActive(false);
    end)

    hooksecurefunc("EncounterJournal_SetTab", function(tabId)
        if CURRENT_TAB_ID ~= tabId then
            addon.TacticFrame.tab:SetHighlight(false);
        end

        PREVIOUS_TAB_ID = CURRENT_TAB_ID
        CURRENT_TAB_ID = tabId
        HideTacticNpcs()
    end)

    hooksecurefunc("EncounterJournalBossButton_OnClick", function(encounterID)
        if PREVIOUS_TAB_ID == TACTIC_TAB_ID then
            ShowTacticNpcs()
        end
    end)

    hooksecurefunc("EncounterJournal_UpdateDifficulty", function(difficulty)
        DIFFICULTY = difficulty
        if PREVIOUS_TAB_ID == TACTIC_TAB_ID and ENCOUNTER_ID then
            ShowTacticNpcs()
        end
    end)
end

local function InitTactics()
    local frame = addon.TacticFrame

    -- Register EncounterJournal events
    frame:RegisterEvent("ADDON_LOADED")

    frame:SetScript("OnEvent", function(self, event, addonName)
        if not CzechQuestsAddon_Store.config.TACTIC_ENABLED then
            return
        end

        if addonName == 'Blizzard_EncounterJournal' then
            addon.TacticFrame:Init()
            SetupCustomTab()
        end
    end)
end
addon.API.InitTactics = InitTactics