local _, NSI = ... -- Internal namespace

-- Function from WeakAuras, thanks rivers
function NSI:IterateGroupMembers(reversed, forceParty)
    local unit = (not forceParty and IsInRaid()) and 'raid' or 'party'
    local numGroupMembers = unit == 'party' and GetNumSubgroupMembers() or GetNumGroupMembers()
    local i = reversed and numGroupMembers or (unit == 'party' and 0 or 1)
    return function()
        local ret
        if i == 0 and unit == 'party' then
            ret = 'player'
        elseif i <= numGroupMembers and i > 0 then
            ret = unit .. i
        end
        i = i + (reversed and -1 or 1)
        return ret
    end
end

function NSAPI:Version() -- old version check function from the database WA, for compatibility reasons
    return 15
end

function NSI:Print(...)
    if NSRT.Settings["DebugLogs"] then
        if DevTool then
            local t = {...}
            local name = t[1]
            print("added", name, "to DevTool Logs")
            table.remove(t, 1)
            DevTool:AddData(t, name)
        else
            print(...)
        end
    end
end

function NSAPI:Shorten(unit, num, role, AddonName) -- Returns color coded Name/Nickname
    local classFilename = unit and select(2, UnitClass(unit))
    if role then -- create role icon if requested
        role = UnitGroupRolesAssigned(unit)
        if role ~= "NONE" then
            role = CreateAtlasMarkup(GetIconForRole(role), 0, 0)
        else
            role = nil
        end
    end
    if classFilename then -- basically "if unit found"
        local name = UnitName(unit)
        local color = GetClassColorObj(classFilename)
        name = num and WeakAuras.WA_Utf8Sub(NSAPI:GetName(name, AddonName), num) or NSAPI:GetName(name, AddonName) -- shorten name before wrapping in color
        if color then -- should always be true anyway?
            return color:WrapTextInColorCode(name), role
        else
            return name, role
        end
    else
        return unit, "" -- return input if nothing was found
    end
end

function NSAPI:GetSpecs(unit)
    if unit then
        return NSI.specs[unit] or false -- return false if no information available for that unit so it goes to the next fallback
    else
        return NSI.specs -- if no unit is given then entire table is requested
    end
end


function NSAPI:GetNote() -- Get rid of extra spaces and color coding. Also converts nicknames
    if not C_AddOns.IsAddOnLoaded("MRT") then
        error("Addon MRT is disabled, can't read the note")
        return ""
    end
    if not VMRT.Note.Text1 then
        error("No MRT Note found")
        return ""
    end
    local note = _G.VMRT.Note.Text1
    local now = GetTime()
    if (not NSI.RawNote) or NSI.RawNote ~= note or NSAPI.disable then -- only do this if it's been at least 1 second since the last time this was done or the note has changed within that small time to prevent running it multiple times on the same encounter if there are multiple assignment auras
        NSI.RawNote = note

        -- only return the relevant part of the note as the user might change stuff on their own end

        local newnote = ""
        local list = false
        local disable = false
        for line in note:gmatch('[^\r\n]+') do
            if line == "nsdisable" then -- global disable all NS Auras for everyone in the raid
                disable = true
            end
            --check for start/end of the name list
            if string.match(line, "ns.*start") or line == "intstart" then -- match any string that starts with "ns" and ends with "start" as well as the interrupt WA
                list = true
            elseif string.match(line, "ns.*end") or line == "intend" then
                list = false
                newnote = newnote..line.."\n"
            end
            if list then
                newnote = newnote..line.."\n"
            end
        end
        NSAPI.disable = disable
        note = newnote
        note = strtrim(note) --trim whitespace
        note = note:gsub("||r", "") -- clean colorcode
        note = note:gsub("||c%x%x%x%x%x%x%x%x", "") -- clean colorcode
        local namelist = {}
        for name in note:gmatch("%S+") do -- finding all strings
            local charname = (UnitIsVisible(name) and name) or NSAPI:GetChar(name, true)
            if name ~= charname and not namelist[name] then
                namelist[name] = charname
            end
        end
        for nickname, charname in pairs(namelist) do
            note = note:gsub("(%f[%w])"..nickname.."(%f[%W])", "%1"..charname.."%2")
        end
        NSI.Note = note
    end
    NSI.Note = NSI.Note or ""
    return NSI.Note
end

function NSI:UnitAura(unit, spellID) -- simplify aura checking for myself
    if unit and UnitExists(unit) and spellID then
        local spell = C_Spell.GetSpellInfo(spellID)
        return spell and C_UnitAuras.GetAuraDataBySpellName(unit, spell.name)
    end
end

function NSI:Difficultycheck(encountercheck) -- check if current difficulty is a Normal/Heroic/Mythic raid and also allow checking if we are currently in an encounter
    local difficultyID = select(3, GetInstanceInfo()) or 0
    return NSRT.Settings["Debug"] or ((difficultyID == 14 or difficultyID == 15 or difficultyID == 16) and ((not encountercheck) or NSI:EncounterCheck()))
end

function NSI:EncounterCheck()
    return WeakAuras.CurrentEncounter or NSRT.Settings["Debug"]
end

-- this one is public as I want to use it in WeakAuras as well
function NSAPI:DeathCheck(unit)
    if unit and UnitExists(unit) then
        return (UnitIsDead(unit) and not UnitIsFeignDeath(unit)) or NSI:UnitAura(unit, 27827)
    end
end

-- technically don't need this to be public but it's good for backwards compatibility for a while
function NSAPI:GetHash(text)
    local counter = 1
    local len = string.len(text)
    for i = 1, len, 3 do
        counter = math.fmod(counter*8161, 4294967279) +  -- 2^32 - 17: Prime!
                (string.byte(text,i)*16776193) +
                ((string.byte(text,i+1) or (len-i+256))*8372226) +
                ((string.byte(text,i+2) or (len-i+256))*3932164)
    end
    return math.fmod(counter, 4294967291) -- 2^32 - 5: Prime (and different from the prime in the loop)
end


function NSAPI:TTS(sound, voice) -- NSAPI:TTS("Bait Frontal", NSRT.TTSVoice)
  if NSRT.Settings["TTS"] then
      local num = voice or NSRT.Settings["TTSVoice"]
        C_VoiceChat.SpeakText(
                num,
                sound,
                Enum.VoiceTtsDestination.LocalPlayback,
                C_TTSSettings and C_TTSSettings.GetSpeechRate() or 0,
                NSRT.Settings["TTSVolume"]
        )
     end
end

function NSAPI:PrivateAura()
    local now = GetTime()
    if (not NSAPI.LastPAMacro) or NSAPI.LastPAMacro < now-4 then -- putting this into global NSAPI namespace to allow auras to reset it if ever required
        NSAPI.LastPAMacro = now
        WeakAuras.ScanEvents("NS_PA_MACRO", true) -- this is for backwards compatibility
        NSI:Broadcast("NS_PAMACRO", "RAID", "nilcheck") -- this will be used going forward, slightly different wording to prevent issues with old auras
    end
end

function NSI:SendWAString(str)
    if str and str ~= "" and type(str) == "string" then
        NSI:Broadcast("NSI_WA_SYNC", "RAID", str)
    end
end