-- Modules/Tracker/SingleFrameTrackerBase.lua
-- Shared implementation for single-frame tracker modules.

local ADDON_NAME = "HailMaryGuildTools"
local HMGT = LibStub("AceAddon-3.0"):GetAddon(ADDON_NAME)
if not HMGT then return end

HMGT.SingleFrameTrackerBase = HMGT.SingleFrameTrackerBase or {}
local Base = HMGT.SingleFrameTrackerBase

local function GetDefaultGroupPlayers()
    local players = {}

    local ownName = HMGT:NormalizePlayerName(UnitName("player"))
    local ownClass = select(2, UnitClass("player"))
    table.insert(players, { name = ownName, class = ownClass, isOwn = true, unitId = "player" })

    if IsInRaid() then
        for i = 1, GetNumGroupMembers() do
            local unitId = "raid" .. i
            local name = HMGT:NormalizePlayerName(UnitName(unitId))
            local class = select(2, UnitClass(unitId))
            if name and name ~= ownName then
                table.insert(players, { name = name, class = class, unitId = unitId })
            end
        end
    elseif IsInGroup() then
        for i = 1, GetNumGroupMembers() - 1 do
            local unitId = "party" .. i
            local name = HMGT:NormalizePlayerName(UnitName(unitId))
            local class = select(2, UnitClass(unitId))
            if name and name ~= ownName then
                table.insert(players, { name = name, class = class, unitId = unitId })
            end
        end
    end

    return players
end

local function ResolveConfigValue(configValue, self)
    if type(configValue) == "function" then
        return configValue(self)
    end
    return configValue
end

local function EntryNeedsVisualTicker(entry)
    if type(entry) ~= "table" then
        return false
    end

    local remaining = tonumber(entry.remaining) or 0
    if remaining > 0 then
        return true
    end

    local maxCharges = tonumber(entry.maxCharges) or 0
    local currentCharges = tonumber(entry.currentCharges)
    if maxCharges > 0 and currentCharges ~= nil and currentCharges < maxCharges then
        return true
    end

    return false
end

function Base:Create(config)
    local tracker = {
        frame = nil,
        updateTicker = nil,
        lastEntryCount = 0,
    }

    function tracker:GetSettings()
        return HMGT.db.profile[config.profileKey]
    end

    function tracker:GetDatabase()
        return ResolveConfigValue(config.database, self) or {}
    end

    function tracker:GetTitle()
        return ResolveConfigValue(config.title, self) or config.frameName
    end

    function tracker:GetDemoKey()
        return ResolveConfigValue(config.demoKey, self) or config.profileKey
    end

    function tracker:GetCooldownInfoOpts()
        return ResolveConfigValue(config.cooldownInfoOpts, self)
    end

    function tracker:GetGroupPlayers()
        local custom = ResolveConfigValue(config.groupPlayersProvider, self)
        if type(custom) == "table" then
            return custom
        end
        return GetDefaultGroupPlayers()
    end

    function tracker:EnsureUpdateTicker()
        if self.updateTicker then
            return
        end
        self.updateTicker = C_Timer.NewTicker(0.1, function()
            self:UpdateDisplay()
        end)
    end

    function tracker:StopUpdateTicker()
        if self.updateTicker then
            self.updateTicker:Cancel()
            self.updateTicker = nil
        end
    end

    function tracker:SetUpdateTickerEnabled(enabled)
        if enabled then
            self:EnsureUpdateTicker()
        else
            self:StopUpdateTicker()
        end
    end

    function tracker:Enable()
        local s = self:GetSettings()
        if not s.enabled and not s.demoMode and not s.testMode then return end

        if not self.frame then
            self.frame = HMGT.TrackerFrame:CreateTrackerFrame(config.frameName, s)
            HMGT.TrackerFrame:SetTitle(self.frame, self:GetTitle())
        end

        if HMGT:IsVisibleForCurrentGroup(s) then
            self.frame:Show()
        else
            self.frame:Hide()
        end
        self:UpdateDisplay()
    end

    function tracker:Disable()
        self:StopUpdateTicker()
        if self.frame then
            self.frame:Hide()
        end
    end

    function tracker:UpdateDisplay()
        if not self.frame then
            self:StopUpdateTicker()
            return
        end

        local s = self:GetSettings()
        local database = self:GetDatabase()
        local cooldownInfoOpts = self:GetCooldownInfoOpts()

        if s.testMode then
            HMGT.TrackerFrame:SetLocked(self.frame, s.locked)
            local entries = HMGT:GetOwnTestEntries(database, s, cooldownInfoOpts)
            self.lastEntryCount = #entries
            HMGT.TrackerFrame:UpdateFrame(self.frame, entries)
            self.frame:Show()
            local shouldTick = false
            for _, entry in ipairs(entries) do
                if EntryNeedsVisualTicker(entry) then
                    shouldTick = true
                    break
                end
            end
            self:SetUpdateTickerEnabled(shouldTick)
            return
        end

        if s.demoMode then
            HMGT.TrackerFrame:SetLocked(self.frame, s.locked)
            local entries = HMGT:GetDemoEntries(self:GetDemoKey(), database, s)
            self.lastEntryCount = #entries
            HMGT.TrackerFrame:UpdateFrame(self.frame, entries)
            self.frame:Show()
            self:SetUpdateTickerEnabled(#entries > 0)
            return
        end

        if not s.enabled then
            self.lastEntryCount = 0
            self.frame:Hide()
            self:StopUpdateTicker()
            return
        end

        if not HMGT:IsVisibleForCurrentGroup(s) then
            self.lastEntryCount = 0
            self.frame:Hide()
            self:StopUpdateTicker()
            return
        end

        HMGT.TrackerFrame:SetLocked(self.frame, s.locked)

        local entries = self:CollectEntries()
        self.lastEntryCount = #entries
        if HMGT.SortDisplayEntries then
            HMGT:SortDisplayEntries(entries, config.profileKey)
        end

        HMGT.TrackerFrame:UpdateFrame(self.frame, entries)
        self.frame:Show()

        local shouldTick = false
        for _, entry in ipairs(entries) do
            if EntryNeedsVisualTicker(entry) then
                shouldTick = true
                break
            end
        end
        self:SetUpdateTickerEnabled(shouldTick)
    end

    function tracker:CollectEntries()
        local entries = {}
        local s = self:GetSettings()
        local database = self:GetDatabase()
        local cooldownInfoOpts = self:GetCooldownInfoOpts()
        local players = self:GetGroupPlayers()

        for _, playerInfo in ipairs(players) do
            repeat
                local name = playerInfo.name
                local pData = HMGT.playerData[name]
                local class = pData and pData.class or playerInfo.class
                local specIdx
                if playerInfo.isOwn then
                    specIdx = GetSpecialization()
                    if not specIdx or specIdx == 0 then break end
                else
                    specIdx = pData and pData.specIndex or nil
                    if not specIdx or tonumber(specIdx) <= 0 then break end
                end
                local talents = pData and pData.talents or {}

                if not class then break end

                local knownSpells = HMGT_SpellData.GetSpellsForSpec(class, specIdx, database)

                for _, spellEntry in ipairs(knownSpells) do
                    if s.enabledSpells[spellEntry.spellId] ~= false then
                        local remaining, total, curCharges, maxCharges = HMGT:GetCooldownInfo(name, spellEntry.spellId, cooldownInfoOpts)
                        local isAvailabilitySpell = HMGT.IsAvailabilitySpell and HMGT:IsAvailabilitySpell(spellEntry)
                        local effectiveCd = HMGT_SpellData.GetEffectiveCooldown(spellEntry, talents)
                        local include = HMGT:ShouldDisplayEntry(s, remaining, curCharges, maxCharges, spellEntry)
                        local spellKnown = HMGT:IsTrackedSpellKnownForPlayer(name, spellEntry.spellId)
                        local hasPartialCharges = (tonumber(maxCharges) or 0) > 0
                            and (tonumber(curCharges) or tonumber(maxCharges) or 0) < (tonumber(maxCharges) or 0)
                        local hasActiveCd = ((remaining or 0) > 0) or hasPartialCharges
                        if not spellKnown and not hasActiveCd then
                            include = false
                        end
                        if isAvailabilitySpell and not spellKnown then
                            include = false
                        end

                        if not playerInfo.isOwn then
                            if isAvailabilitySpell and not HMGT:HasAvailabilityState(name, spellEntry.spellId) then
                                include = false
                            end
                        end

                        if include then
                            entries[#entries + 1] = {
                                playerName = name,
                                class = class,
                                spellEntry = spellEntry,
                                remaining = remaining,
                                total = total > 0 and total or effectiveCd,
                                currentCharges = curCharges,
                                maxCharges = maxCharges,
                            }
                        end
                    end
                end
            until true
        end

        return entries
    end

    return tracker
end

function Base:CreateModule(moduleName, config, ...)
    if type(moduleName) ~= "string" or moduleName == "" then
        return self:Create(config)
    end

    local module = HMGT:NewModule(moduleName, ...)
    local tracker = self:Create(config)
    for key, value in pairs(tracker) do
        module[key] = value
    end
    HMGT[moduleName] = module
    return module
end