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

HMGT.TrackerAvailability = HMGT.TrackerAvailability or {}

local internals = HMGT.TrackerInternals or {}
local GetPlayerAuraApplications = internals.GetPlayerAuraApplications
local GetSpellCastCountInfo = internals.GetSpellCastCountInfo

function HMGT:GetOwnAvailabilityProgress(spellEntry)
    local availability = self:GetAvailabilityConfig(spellEntry)
    if not availability then
        return nil, nil
    end

    local required = self:GetAvailabilityRequiredCount(spellEntry)
    if required <= 0 then
        return nil, nil
    end

    local current = 0
    if availability.type == "auraStacks" then
        current = GetPlayerAuraApplications and GetPlayerAuraApplications(availability.auraSpellId) or 0
        if current <= 0 then
            local fallbackSpellId = tonumber(availability.fallbackSpellCountId)
                or tonumber(availability.progressSpellId)
                or tonumber(spellEntry and spellEntry.spellId)
            if fallbackSpellId and fallbackSpellId > 0 and GetSpellCastCountInfo then
                current = GetSpellCastCountInfo(fallbackSpellId)
            end
        end
    else
        return nil, nil
    end

    current = math.max(0, math.min(required, tonumber(current) or 0))
    return current, required
end

function HMGT:GetAvailabilityState(playerName, spellId)
    local state = self:GetAvailabilityStateEntry(playerName, spellId)
    if not state then
        return nil, nil
    end
    return tonumber(state.current) or 0, tonumber(state.max) or 0
end

function HMGT:HasAvailabilityState(playerName, spellId)
    local _, max = self:GetAvailabilityState(playerName, spellId)
    return (tonumber(max) or 0) > 0
end

function HMGT:StoreAvailabilityState(playerName, spellId, current, max, spellEntry)
    local normalizedName = self:NormalizePlayerName(playerName)
    local sid = tonumber(spellId)
    if not normalizedName or not sid or sid <= 0 then
        return false
    end

    local maxCount = math.max(0, math.floor((tonumber(max) or 0) + 0.5))
    if maxCount <= 0 then
        return self:ClearAvailabilityState(normalizedName, sid)
    end

    local currentCount = math.max(0, math.min(maxCount, math.floor((tonumber(current) or 0) + 0.5)))
    local previous = self:GetAvailabilityStateEntry(normalizedName, sid)
    local changed = (not previous)
        or (tonumber(previous.current) or -1) ~= currentCount
        or (tonumber(previous.max) or -1) ~= maxCount

    self:SetAvailabilityStateEntry(normalizedName, sid, {
        current = currentCount,
        max = maxCount,
        spellEntry = spellEntry,
        updatedAt = GetTime(),
    })

    return changed
end

function HMGT:RefreshOwnAvailabilitySpell(spellEntry)
    if not self:IsAvailabilitySpell(spellEntry) then
        return false
    end

    local playerName = self:NormalizePlayerName(UnitName("player"))
    if not playerName then
        return false
    end

    local current, max = self:GetOwnAvailabilityProgress(spellEntry)
    if (tonumber(max) or 0) > 0 then
        local pData = self.playerData[playerName]
        if pData and type(pData.knownSpells) == "table" then
            pData.knownSpells[tonumber(spellEntry.spellId)] = true
        end
    end
    return self:StoreAvailabilityState(playerName, spellEntry.spellId, current, max, spellEntry)
end

function HMGT:RefreshOwnAvailabilityStates()
    local playerName = self:NormalizePlayerName(UnitName("player"))
    local pData = playerName and self.playerData[playerName]
    if not pData or not pData.class or not pData.specIndex then
        return false
    end

    local changed = false
    local groupCooldowns = HMGT_SpellData.GetSpellsForSpec(pData.class, pData.specIndex, HMGT_SpellData.GroupCooldowns)
    for _, spellEntry in ipairs(groupCooldowns or {}) do
        if self:IsAvailabilitySpell(spellEntry) and self:RefreshOwnAvailabilitySpell(spellEntry) then
            changed = true
        end
    end

    if self:PruneAvailabilityStates(playerName, pData.knownSpells or {}) then
        changed = true
    end

    return changed
end

function HMGT:RefreshAndPublishOwnAvailabilityStates()
    local playerName = self:NormalizePlayerName(UnitName("player"))
    local pData = playerName and self.playerData[playerName]
    if not pData or not pData.class or not pData.specIndex then
        return false
    end

    local changed = false
    local groupCooldowns = HMGT_SpellData.GetSpellsForSpec(pData.class, pData.specIndex, HMGT_SpellData.GroupCooldowns)
    for _, spellEntry in ipairs(groupCooldowns or {}) do
        if self:IsAvailabilitySpell(spellEntry) and self:RefreshOwnAvailabilitySpell(spellEntry) then
            self:PublishOwnSpellState(spellEntry.spellId, { sendLegacy = true })
            changed = true
        end
    end

    if self:PruneAvailabilityStates(playerName, pData.knownSpells or {}) then
        changed = true
    end

    return changed
end

function HMGT:SendOwnAvailabilityStates(target)
    local playerName = self:NormalizePlayerName(UnitName("player"))
    local pData = playerName and self.playerData[playerName]
    if not pData or not pData.class or not pData.specIndex then
        return 0
    end

    self:RefreshOwnAvailabilityStates()

    local sent = 0
    local groupCooldowns = HMGT_SpellData.GetSpellsForSpec(pData.class, pData.specIndex, HMGT_SpellData.GroupCooldowns)
    for _, spellEntry in ipairs(groupCooldowns or {}) do
        if self:IsAvailabilitySpell(spellEntry) and self:IsTrackedSpellKnownForPlayer(playerName, spellEntry.spellId) then
            local current, max = self:GetAvailabilityState(playerName, spellEntry.spellId)
            if (tonumber(max) or 0) > 0 then
                self:BroadcastAvailabilityState(spellEntry.spellId, current, max, target)
                sent = sent + 1
            end
        end
    end

    return sent
end