-- Changelog.lua (Updated for BlackBox Addon with Animation)
-- This version uses the version number from TimerFrame.lua and scrolls like a rockstar

local changelogEntries = {
    "v 1.339 - Start Group Has Pre Filled Copy Box For Easier Starting Groups.",
    "v 1.338 - When Someone Enters Zone And Mouses Over ShardID, IF Someone Has Timer In Group For ShardID It Is Moved To Top And Instantly Shared In Order To Update Rotation Instantly.",
    "v 1.337 - Fixed Auto Crate Down Announcements.",
    "v 1.336 - Added ShardID To Rotation Window",
    "v 1.335 - Added LFG Shortcut To Minimap Icon, Fixed Rotation From Leader When Scrolling. Changed Some Buttons.",
    "v 1.334 - Fixed A Rotation Window Error.",
    "v 1.333 - Rotation Stays Open On Reload If Opened Before Reload (If Moved To Different Position).",
    "v 1.329 - Added Conquest Icon Setting, If You Don't Like It For Some Reason.",
    "v 1.328 - Timers Now Drag And Drop, Click And Hold Timer Number Or Shard Number To Move.",
    "v 1.327 - Fixed Conquest Counter, Doesn't Reset When Spending Conquest.",
    "v 1.326 - When Join Group Rotatation Timers Start In Timer Window.",
    "v 1.325 - Announces Crate Automatically.",
    "v 1.324 - When New Shard Is Populated It Looks For Timers With Same Shard And Moves It To The Top For Everyone.",
    "v 1.323 - Added Shard Log Click On ShardID To Open, Rotation Window Moovable Can Be Left Open.",
    "v 1.322 - Updated Rotation Window.",
    "v 1.321 - Added ShardID Log To ShardID Button.",
    "v 1.320 - Removed TomTom Not Loaded Message.",
    "v 1.319 - Rotation Window Added, Left Click Scrolling Text. And Throttle ShardID Announce.",
    "v 1.318 - Updated TopPoints",
    "v 1.317 - Changed Some Tooltips.",
    "v 1.316 - Fixed 'Slam Central Station'.",
    "v 1.315 - ShardID Doesn't Announce Dornogal.",
    "v 1.314 - Added Right Click For Scrolling Speed.",
    "v 1.313 - Fixed Conquest Bug.",
    "v 1.312 - Announces ShardID When Entering A Zone, Or Reloading.",
    "v 1.311 - Fixed Timers Not Setting New Start Point When Restarted.",
    "v 1.310 - Should Fixed Some Timers Restarting On Restart.",
    "v 1.309 - Spread Out Button Added To Icon Menu.",
    "v 1.308 - Timers Red Under 3 Minutes.",
    "v 1.307 - Added Changelog.",
    "v 1.306 - Rotation Shows Leaders Top 6 Timers, 1 Per Zone.",    
}
local function GetAddonVersion()
    local frame = _G["TimerFrame"]
    if frame and frame.versionText then
        return frame.versionText:GetText()
    end
    return changelogEntries[1] or "v ???"
end

local function CreateChangelogFrame()
    local frame = CreateFrame("Frame", "BlackBoxChangelogFrame", UIParent, "BasicFrameTemplateWithInset")
    frame:SetSize(300, 400)
    frame:SetPoint("CENTER")
    frame:SetMovable(true)
    frame:EnableMouse(true)
    frame:RegisterForDrag("LeftButton")
    frame:SetScript("OnDragStart", frame.StartMoving)
    frame:SetScript("OnDragStop", frame.StopMovingOrSizing)

    frame.title = frame:CreateFontString(nil, "OVERLAY")
    frame.title:SetFontObject("GameFontHighlight")
    frame.title:SetPoint("LEFT", frame.TitleBg, "LEFT", 5, 0)
    frame.title:SetText("BlackBox Changelog")

    local scrollFrame = CreateFrame("ScrollFrame", nil, frame, "UIPanelScrollFrameTemplate")
    scrollFrame:SetPoint("TOPLEFT", 10, -30)
    scrollFrame:SetPoint("BOTTOMRIGHT", -30, 10)

    local content = CreateFrame("Frame", nil, scrollFrame)
    content:SetSize(260, 2000)
    scrollFrame:SetScrollChild(content)

    local changelogText = content:CreateFontString(nil, "OVERLAY", "GameFontNormal")
    changelogText:SetPoint("TOP", 0, -scrollFrame:GetHeight() - 5 * 13)
    changelogText:SetWidth(260)
    changelogText:SetJustifyH("CENTER")

    local changelogString = table.concat(changelogEntries, "\n")
    changelogText:SetText(changelogString)

    local textHeight = changelogText:GetStringHeight()
    content:SetHeight(textHeight)

    local animationGroup = changelogText:CreateAnimationGroup()
    local animation = animationGroup:CreateAnimation("Translation")
    animation:SetOffset(0, scrollFrame:GetHeight() + 5 * changelogText:GetLineHeight())
    animation:SetDuration(10)
    animation:SetSmoothing("OUT")
    animation:SetScript("OnFinished", function()
        changelogText:SetPoint("TOP", 0, 0)
    end)

    frame:Show()
    animationGroup:Play()

    return frame
end

local function ShowChangelogIfNeeded()
    BlackBoxDB = BlackBoxDB or {}
    BlackBoxDB.settings = BlackBoxDB.settings or {}

    local version = GetAddonVersion()
    if BlackBoxDB.settings.lastSeenVersion ~= version then
        local changelogFrame = CreateChangelogFrame()
        changelogFrame:Show()
        BlackBoxDB.settings.lastSeenVersion = version
        print("[BlackBox] Updated to version " .. version)
    end
end

local frame = CreateFrame("Frame")
frame:RegisterEvent("ADDON_LOADED")
frame:SetScript("OnEvent", function(self, event, arg1)
    if arg1 == "BlackBox" then
        ShowChangelogIfNeeded()
    end
end)

SLASH_BLACKBOXCHANGELOG1 = "/bbcl"
SlashCmdList["BLACKBOXCHANGELOG"] = function(msg)
    local changelogFrame = CreateChangelogFrame()
    changelogFrame:Show()
end