local Y=require("yaru.core")
local gfx=require("yaru.gfx")
local ui=require("yaru.ui")
local computer=require("computer")
local component=require("component")
local fs=require("filesystem")
local unicode=require("unicode")
local M={}

local function bar(x,y,w,frac,fg,bg)
frac=math.max(0,math.min(1,frac))
local n=math.floor(w*frac+.5)
gfx.fill(x,y,w,1,bg)
if n>0 then gfx.fill(x,y,n,1,fg)end
end

function M.powerDialog()
Y.dialog{title="Power Off",text="Choose what the computer should do.",
buttons={{"Cancel"},{"Log Out",function()Y.quit("logout")end},
{"Restart",function()Y.quit("reboot")end,"suggested"},
{"Power Off",function()Y.quit("shutdown")end,"destructive"}}}
end

function M.open()
local W=Y.size()
local pw,ph=40,17
local x0,y0=W-pw-1,3
local o={kind="quick",tick=function()gfx.damage(x0,y0-1,pw+1,ph+3)end,tickInterval=2}
local boot=fs.get("/")
local dTotal=boot and boot.spaceTotal()or 0
local dUsed=boot and boot.spaceUsed()or 0

local function pill(x,y,label,on,fn)
local t=Y.theme
local bg=on and t.accent or t.menuHi
local fg=on and 0xFFFFFF or t.menuFg
ui.pill(x,y,18,bg)
gfx.text(x+2,y,ui.trunc(label,15),fg,bg)
o.hits[#o.hits+1]={x,y,18,1,fn}
end

function o.draw()
local t=Y.theme
local x,y=x0,y0
ui.card(x,y,pw,ph,t.menu)
o.hits[#o.hits+1]={x,y,pw,ph,function()end}

local maxE=computer.maxEnergy()
local e=maxE>0 and string.format("ϟ %d%%",math.floor(computer.energy()*100/maxE))or"ϟ —"
gfx.text(x+2,y+1,e,t.menuFg,t.menu)
ui.button(o,x+pw-22,y+1,"☼",function()Y.closeOverlay();Y.launch("settings")end,nil,3)
ui.button(o,x+pw-18,y+1,"Lock",function()Y.closeOverlay();Y.lazy("lock").open(Y.cfg.password~=nil)end,nil,6)
ui.button(o,x+pw-11,y+1,"⌽ Off…",function()Y.closeOverlay();M.powerDialog()end,nil,9)

local net=component.isAvailable("internet")and"Internet"or component.isAvailable("modem")and"Network"or"Offline"
pill(x+2,y+3,"⇅ "..net,net~="Offline",function()
Y.notify("Network",net=="Offline"and"No network card installed"or(net.." card is available"))
end)
pill(x+20,y+3,"♪ Sound",Y.cfg.beeps,function()Y.cfg.beeps=not Y.cfg.beeps;Y.saveConfig()end)
pill(x+2,y+5,"◐ Dark Style",Y.cfg.dark,function()Y.cfg.dark=not Y.cfg.dark;Y.saveConfig();Y.applyTheme()end)
pill(x+20,y+5,"☾ Do Not Disturb",Y.cfg.dnd,function()Y.cfg.dnd=not Y.cfg.dnd;Y.saveConfig()end)
pill(x+2,y+7,"▮ RAM in panel",Y.cfg.showMemory,function()Y.cfg.showMemory=not Y.cfg.showMemory;Y.saveConfig()end)
pill(x+20,y+7,"◉ Screen Lock",(Y.cfg.blank or 0)>0,function()
Y.cfg.blank=(Y.cfg.blank or 0)>0 and 0 or 5;Y.saveConfig()
end)

local total,free=computer.totalMemory(),computer.freeMemory()
gfx.text(x+2,y+9,"Memory",t.menuFg,t.menu)
local ms=string.format("%s / %s",ui.size(total-free),ui.size(total))
gfx.text(x+pw-2-unicode.len(ms),y+9,ms,t.dim,t.menu)
ui.progress(x+2,y+10,pw-4,(total-free)/total,(total-free)/total>.85 and t.danger or t.accent)
gfx.text(x+2,y+11,"Disk",t.menuFg,t.menu)
local ds=string.format("%s / %s",ui.size(dUsed),ui.size(dTotal))
gfx.text(x+pw-2-unicode.len(ds),y+11,ds,t.dim,t.menu)
ui.progress(x+2,y+12,pw-4,dTotal>0 and dUsed/dTotal or 0,t.accent)
gfx.text(x+2,y+14,"Uptime "..string.format("%d:%02d",computer.uptime()//3600,computer.uptime()//60%60),t.dim,t.menu)
ui.button(o,x+pw-11,y+14,"Log Out…",function()Y.closeOverlay();M.powerDialog()end,"flat",9)
end
function o.touch()Y.closeOverlay()return true end
function o.key(_,char,code)if code==Y.K.esc then Y.closeOverlay()end end
Y.openOverlay(o)
return o
end

return M