--:Minify:--
-- Color indices (sfgc):
-- 1=white, 2=red, 3=green, 4=blue, 5=cyan, 6=magenta, 7=yellow
-- 8=orange, 9=lime, 10=lightcyan, 11=brown, 12=darkgrey, 13=lightgrey, 14=purple, 15=chartreuse, 16=black

local C_LOGO  = 0x00FFFF  -- cyan
local C_WHITE = 0xFFFFFF  -- white
local C_LABEL = 0xDBDBDB -- light grey  (key names)
local C_SEP   = 0x6D6D6D -- dark grey   (---- separator)
local C_USER  = 0x00FF00  -- green       (user@host)

local function c(col) syscall.devctl(1, "sfgc", col) end

local username = syscall.getUsername() or "Unknown"
local hostname = syscall.getHostname() or "Unknown"
local userhost = username .. "@" .. hostname

local function formatUptime(ms)
    local s = math.floor(ms / 1000)
    local m = math.floor(s / 60)
    local h = math.floor(m / 60)
    local d = math.floor(h / 24)
    s = s % 60; m = m % 60; h = h % 24
    local parts = {}
    if d > 0 then parts[#parts+1] = d .. "d" end
    if h > 0 then parts[#parts+1] = h .. "h" end
    if m > 0 then parts[#parts+1] = m .. "m" end
    parts[#parts+1] = s .. "s"
    return table.concat(parts, " ")
end

local host_str = syscall.getHost() or "Unknown"
local cc_ver   = host_str:match("ComputerCraft ([%d%.]+)") or host_str

local info = {
    {nil,        userhost},
    {nil,        string.rep("-", #userhost)},
    {"OS",       syscall.version() or "Unknown"},
    {"Host",     cc_ver},
    {"Arch",     syscall.arch() or "Unknown"},
    {"Uptime",   formatUptime(syscall.getUptime() or 0)},
    {"Tasks",    tostring(#(syscall.getTasks() or {}))},
    {"Shell",    syscall.getEnviron("SHELL") or "Unknown"},
    {"Terminal", "tty1"},
    {"UID",      tostring(syscall.getuid())},
    {"Packages", "n/a (spm)"},
}

local logo = {
    "..               *.              .. ",
    " *=             +@*             +*  ",
    " .@#.          -@@@=          :#@.  ",
    "  =@@+         *@@@#         +@@=   ",
    "   %@@%:       *@@@#       -%@@%    ",
    "   :@@@@+      *@@@#     .*@@@@:    ",
    "    :*@@@%-    *@@@#    -@@@@*:     ",
    "       =%@@#.  *@@@#  .#@@%=        ",
    "     :=. :*@@= *@@@# =@@+: .=:      ",
    "      %@#=..*# +@@@# #*..=#@#       ",
    "      .@@@@+=# .%@%: #=+@@@@.       ",
    "       .....=#  -@=  *+...:.        ",
    "        -*%*-@=  -  =@-*%*-         ",
    "        -@*. -@%. :%@- :*@-         ",
    "              .#@#@*                ",
    "                -#-                 ",
    "                                    ",
}

local lines = math.max(#logo, #info)
for i = 1, lines do
    local logo_str = logo[i] or string.rep(" ", 36)

    c(C_LOGO)
    printInline(logo_str)

    c(C_LABEL)
    printInline("| ")

    local row = info[i]
    if row then
        if row[1] == nil and i == 1 then
            -- user@host line
            c(C_USER)
            printInline(row[2])
        elseif row[1] == nil and i == 2 then
            -- separator line
            c(C_SEP)
            printInline(row[2])
        elseif row[1] then
            -- label: value
            c(C_LABEL)
            printInline(row[1] .. ": ")
            c(C_WHITE)
            printInline(row[2])
        end
    end

    c(C_WHITE)
    print("")
end