local mp = require 'mp'
local utils = require 'mp.utils'

local originalVolume = 100

-- Fade volume from current to target in steps
local function fade_volume(target, steps, interval, callback)
    local current = tonumber(mp.get_property("volume"))
    local delta = (target - current) / steps
    local i = 0

    local function step()
        i = i + 1
        local newVolume = current + delta * i
        mp.set_property("volume", tostring(newVolume))
        if i < steps then
            mp.add_timeout(interval, step)
        elseif callback then
            callback()
        end
    end

    step()
end

-- Function to speak text using RHVoice with volume fading
local function speak_text(text)
    originalVolume = tonumber(mp.get_property("volume")) or 100
    local targetVolume = math.max(originalVolume * 0.3, 1)

    -- Fade down, speak via RHVoice, then fade up
    fade_volume(targetVolume, 10, 0.05, function()
        utils.subprocess({
            args = {"bash", "-c", string.format("echo %q | RHVoice-test -v 500 --", text)}
        })
        fade_volume(originalVolume, 10, 0.05)
    end)
end

-- Toggle shuffle mode and announce it with voice feedback
function toggle_shuffle()
    local current_shuffle = mp.get_property_native("shuffle")
    local new_shuffle = not current_shuffle
    
    mp.set_property_native("shuffle", new_shuffle)
    
    local status_message
    if new_shuffle then
        status_message = "Random playback on"
    else
        status_message = "Sequential playback"
    end
    
    -- Speak the status using the same strings as in music_player.py
    speak_text(status_message)
end

-- Bind key for the toggle shuffle function
mp.add_key_binding("r", "toggle_shuffle", toggle_shuffle)