NameDialog = class()
local L = LibStub("AceLocale-3.0"):GetLocale("RaidTargetTactics")

function NameDialog:init(names)
    self.invalidNames = names
    self.callback = function() end
end

function NameDialog:InitDialog()
    local this = self
    
    self.nameBox = CreateFrame("Frame", nil, UIParent)
    self.nameBox:SetWidth(240)
    self.nameBox:SetHeight(50)
    local backdrop = {
      -- path to the background texture
      bgFile = "Interface\\FrameGeneral\\UI-Background-Marble",
      -- path to the border texture
      edgeFile = "Interface\\DialogFrame\\UI-DialogBox-Gold-Border",
      -- true to repeat the background texture to fill the frame, false to scale it
      tile = true,
      -- size (width or height) of the square repeating background tiles (in pixels)
      tileSize = 256,
      -- thickness of edge segments and square size of edge corners (in pixels)
      edgeSize = 32,
      -- distance from the edges of the frame to those of the background texture (in pixels)
      insets = {
        left = 11,
        right = 12,
        top = 12,
        bottom = 11
      }
    }
    self.nameBox:SetBackdrop(backdrop)
    self.nameBox:SetFrameStrata("DIALOG")
    self.nameBox:SetPoint("CENTER")

    self.nameLabel = self.nameBox:CreateFontString()
    self.nameLabel:SetFontObject(GameFontHighlight)
    self.nameLabel:SetPoint("LEFT", 20, 0)
    self.nameLabel:SetText(L.Name .. ":")
    self.nameLabel:SetTextColor(YELLOW_FONT_COLOR.r, YELLOW_FONT_COLOR.g, YELLOW_FONT_COLOR.b)
    self.nameLabel:Show()

    self.nameField = CreateFrame("EditBox", "__RTT_ASKNAME", self.nameBox, "InputBoxTemplate")
    self.nameField:SetAutoFocus(false)
    self.nameField:SetFontObject(ChatFontNormal)
    self.nameField:SetWidth(100)
    self.nameField:SetHeight(20)
    self.nameField:SetPoint("LEFT", 60, 0)
    self.nameField:SetTextInsets(0, 0, 3, 3)
    self.nameField:SetScript("OnEscapePressed", function() this:Hide() end)
    self.nameField:SetScript("OnTextChanged", function() this:OnChange() end)
    self.nameField:SetScript("OnEnterPressed", function() this:OnEnter() end)

    -- add button
    self.okButton = CreateFrame("Button", nil, self.nameBox, "OptionsButtonTemplate")
    self.okButton:SetText("OK")
    self.okButton:Disable()
    self.okButton:SetWidth(50)
    self.okButton:SetPoint("left", 170, 0)
    self.okButton:Show()
    self.okButton:SetScript("OnClick", function() this:OnEnter() end)

    self.nameBox:Hide()
end

function NameDialog:SetInvalidNames(names)
    self.invalidNames = names
end

function NameDialog:Show()
    self.nameBox:Show()
    self.nameField:SetText("")
    self.nameField:SetFocus()
end

function NameDialog:Hide()
    self.nameBox:Hide()
end

function NameDialog:GetName()
    return strtrim(self.nameField:GetText())
end

function NameDialog:IsValidName()
    local name = self:GetName()
    if #name > 0 then
        for _, taken in ipairs(self.invalidNames) do
            if name == taken then
                return false
            end
        end
        return true
    end
    return false
end

function NameDialog:OnChange()
    if self:IsValidName() then
        self.okButton:Enable()
    else
        self.okButton:Disable()
    end
end

function NameDialog:OnEnter()
    if not self:IsValidName() then
        return
    end
    local name = self:GetName()
    self:Hide()
    self.callback(name)
end

function NameDialog:OnNameChosen(func)
    self.callback = func
end