local Module = SUI:NewModule("Chat.Copy");

function Module:OnEnable()
    local db = {
        copy = SUI.db.profile.chat.copy,
        module = SUI.db.profile.modules.chat
    }

    if (db.copy and db.module) then
        local concat = table.concat
        local container = CreateFrame("Frame", "CopyFrame", UIParent, "BackdropTemplate")
        container:SetSize(540, 300)
        container:SetPoint("CENTER", UIParent, "CENTER", 0, 0)
        container:SetFrameStrata("DIALOG")
        container:SetBackdrop({
            bgFile = "Interface\\DialogFrame\\UI-DialogBox-Background",
            edgeSize = 16,
            tile = true,
            tileSize = 16,
            insets = { left = 3, right = 3, top = 3, bottom = 3 }
        })
        container:SetBackdropColor(0, 0, 0)
        container:Hide()

        local title = container:CreateFontString(nil, "OVERLAY")
        title:SetPoint("TOPLEFT", 8, -8)
        title:SetFont(STANDARD_TEXT_FONT, 18)
        title:SetTextColor(1, 1, 0)
        title:SetShadowOffset(1, -1)
        title:SetJustifyH("LEFT")

        local closeButton = CreateFrame("Button", nil, container, "UIPanelCloseButton")
        closeButton:SetPoint("TOPRIGHT", 0, -1)

        local copyBox = CreateFrame("EditBox", nil, container)
        copyBox:SetSize(540, 300)
        copyBox:SetMultiLine(true)
        copyBox:SetAutoFocus(false)
        copyBox:SetScript("OnEscapePressed", function()
            container:Hide()
        end)

        local scroll = CreateFrame("ScrollFrame", nil, container, "UIPanelScrollFrameTemplate")
        scroll:SetPoint("TOPLEFT", 8, -30)
        scroll:SetPoint("BOTTOMRIGHT", -30, 8)
        scroll:SetScrollChild(copyBox)

        scroll.ScrollBar:SetScript("OnMinMaxChanged", function(self, _, max)
            C_Timer.After(2, function() self:SetValue(max) end)
        end)

        local function GetChatLines(chat)
            local lines = {}
            for message = 1, chat:GetNumMessages() do
                lines[message] = chat:GetMessageInfo(message)
            end

            return lines
        end

        local function CopyChat(chat)
            ToggleFrame(container)
            if container:IsShown() then
                local width, height = container:GetSize()
                copyBox:SetSize(width - 38, height - 38)
                scroll:UpdateScrollChildRect()

                title:SetText(chat.name)

                local f1, f2, f3 = chat:GetFont()
                copyBox:SetFont(f1, f2, f3)

                local lines = GetChatLines(chat)
                local text = concat(lines, "\n")
                copyBox:SetMaxLetters(#lines * 255 + #lines)
                copyBox:SetText(text)
            end
        end

        local function CreateCopyButton(self)
            self.Copy = CreateFrame("Button", nil, self)
            self.Copy:SetSize(20, 20)
            self.Copy:SetPoint("TOPRIGHT", self, 0, -5)

            self.Copy:SetNormalTexture("Interface\\AddOns\\SUI\\Media\\Textures\\Chat\\copynormal")
            self.Copy:GetNormalTexture():SetSize(20, 20)

            self.Copy:SetHighlightTexture("Interface\\AddOns\\SUI\\Media\\Textures\\Chat\\copyhighlight")
            self.Copy:GetHighlightTexture():SetAllPoints(self.Copy:GetNormalTexture())

            local tab = _G[self:GetName() .. "Tab"]
            hooksecurefunc(tab, "SetAlpha", function()
                self.Copy:SetAlpha(tab:GetAlpha() * 0.55)
            end)

            self.Copy:SetScript("OnMouseDown", function(self)
                self:GetNormalTexture():ClearAllPoints()
                self:GetNormalTexture():SetPoint("CENTER", 1, -1)
            end)

            self.Copy:SetScript("OnMouseUp", function()
                self.Copy:GetNormalTexture():ClearAllPoints()
                self.Copy:GetNormalTexture():SetPoint("CENTER")

                if self.Copy:IsMouseOver() then
                    CopyChat(self)
                end
            end)
        end

        local function EnableCopyButton()
            for _, v in pairs(CHAT_FRAMES) do
                local chat = _G[v]
                if chat and not chat.Copy then
                    CreateCopyButton(chat)
                end
            end
        end
        hooksecurefunc("FCF_OpenTemporaryWindow", EnableCopyButton)
        EnableCopyButton()
    end
end
