
local comms       = require("scada-common.comms")
local log         = require("scada-common.log")
local network     = require("scada-common.network")
local types       = require("scada-common.types")
local util        = require("scada-common.util")

local core        = require("graphics.core")
local themes      = require("graphics.themes")

local Div         = require("graphics.elements.Div")
local ListBox     = require("graphics.elements.ListBox")
local MultiPane   = require("graphics.elements.MultiPane")
local TextBox     = require("graphics.elements.TextBox")

local Checkbox    = require("graphics.elements.controls.Checkbox")
local PushButton  = require("graphics.elements.controls.PushButton")
local RadioButton = require("graphics.elements.controls.RadioButton")

local NumberField = require("graphics.elements.form.NumberField")
local TextField   = require("graphics.elements.form.TextField")

local IndLight    = require("graphics.elements.indicators.IndicatorLight")

local tri = util.trinary

local cpair = core.cpair

local RIGHT = core.ALIGN.RIGHT

local self = {
    importing_legacy = false,

    show_auth_key = nil,    ---@type function
    show_key_btn = nil,     ---@type PushButton
    auth_key_textbox = nil, ---@type TextBox
    auth_key_value = ""
}

local system = {}

-- create the system configuration view
---@param tool_ctl _crd_cfg_tool_ctl
---@param main_pane MultiPane
---@param cfg_sys [ crd_config, crd_config, crd_config, { [1]: string, [2]: string, [3]: any }[], function ]
---@param divs Div[]
---@param ext [ MultiPane, MultiPane, function, function ]
---@param style { [string]: cpair }
function system.create(tool_ctl, main_pane, cfg_sys, divs, ext, style)
    local settings_cfg, ini_cfg, tmp_cfg, fields, load_settings = cfg_sys[1], cfg_sys[2], cfg_sys[3], cfg_sys[4], cfg_sys[5]
    local net_cfg, log_cfg, clr_cfg, summary = divs[1], divs[2], divs[3], divs[4]
    local fac_pane, mon_pane, preset_monitor_fields, exit = ext[1], ext[2], ext[3], ext[4]

    local bw_fg_bg      = style.bw_fg_bg
    local g_lg_fg_bg    = style.g_lg_fg_bg
    local nav_fg_bg     = style.nav_fg_bg
    local btn_act_fg_bg = style.btn_act_fg_bg
    local btn_dis_fg_bg = style.btn_dis_fg_bg

    --#region Network

    local net_c_1 = Div{parent=net_cfg,x=2,y=4,width=49}
    local net_c_2 = Div{parent=net_cfg,x=2,y=4,width=49}
    local net_c_3 = Div{parent=net_cfg,x=2,y=4,width=49}
    local net_c_4 = Div{parent=net_cfg,x=2,y=4,width=49}

    local net_pane = MultiPane{parent=net_cfg,x=1,y=4,panes={net_c_1,net_c_2,net_c_3,net_c_4}}

    TextBox{parent=net_cfg,x=1,y=2,text=" Network Configuration",fg_bg=cpair(colors.black,colors.lightBlue)}

    TextBox{parent=net_c_1,x=1,y=1,text="Please set the network channels below."}
    TextBox{parent=net_c_1,x=1,y=3,height=4,text="Each of the 5 uniquely named channels, including the 3 below, must be the same for each device in this SCADA network. For multiplayer servers, it is recommended to not use the default channels.",fg_bg=g_lg_fg_bg}

    TextBox{parent=net_c_1,x=1,y=8,width=18,text="Supervisor Channel"}
    local svr_chan = NumberField{parent=net_c_1,x=21,y=8,width=7,default=ini_cfg.SVR_Channel,min=1,max=65535,fg_bg=bw_fg_bg}
    TextBox{parent=net_c_1,x=29,y=8,height=4,text="[SVR_CHANNEL]",fg_bg=g_lg_fg_bg}

    TextBox{parent=net_c_1,x=1,y=10,width=19,text="Coordinator Channel"}
    local crd_chan = NumberField{parent=net_c_1,x=21,y=10,width=7,default=ini_cfg.CRD_Channel,min=1,max=65535,fg_bg=bw_fg_bg}
    TextBox{parent=net_c_1,x=29,y=10,height=4,text="[CRD_CHANNEL]",fg_bg=g_lg_fg_bg}

    TextBox{parent=net_c_1,x=1,y=12,width=14,text="Pocket Channel"}
    local pkt_chan = NumberField{parent=net_c_1,x=21,y=12,width=7,default=ini_cfg.PKT_Channel,min=1,max=65535,fg_bg=bw_fg_bg}
    TextBox{parent=net_c_1,x=29,y=12,height=4,text="[PKT_CHANNEL]",fg_bg=g_lg_fg_bg}

    local chan_err = TextBox{parent=net_c_1,x=8,y=14,width=35,text="Please set all channels.",fg_bg=cpair(colors.red,colors.lightGray),hidden=true}

    local function submit_channels()
        local svr_c, crd_c, pkt_c = tonumber(svr_chan.get_value()), tonumber(crd_chan.get_value()), tonumber(pkt_chan.get_value())
        if svr_c ~= nil and crd_c ~= nil and pkt_c ~= nil then
            tmp_cfg.SVR_Channel, tmp_cfg.CRD_Channel, tmp_cfg.PKT_Channel = svr_c, crd_c, pkt_c
            net_pane.set_value(2)
            chan_err.hide(true)
        else chan_err.show() end
    end

    PushButton{parent=net_c_1,x=1,y=14,text="\x1b Back",callback=function()main_pane.set_value(1)end,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=net_c_1,x=44,y=14,text="Next \x1a",callback=submit_channels,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    TextBox{parent=net_c_2,x=1,y=1,text="Please set the connection timeouts below."}
    TextBox{parent=net_c_2,x=1,y=3,height=4,text="You generally should not need to modify these. On slow servers, you can try to increase this to make the system wait longer before assuming a disconnection. The default for all is 5 seconds.",fg_bg=g_lg_fg_bg}

    TextBox{parent=net_c_2,x=1,y=8,width=19,text="Supervisor Timeout"}
    local svr_timeout = NumberField{parent=net_c_2,x=20,y=8,width=7,default=ini_cfg.SVR_Timeout,min=2,max=25,max_chars=6,max_frac_digits=2,allow_decimal=true,fg_bg=bw_fg_bg}

    TextBox{parent=net_c_2,x=1,y=10,width=14,text="Pocket Timeout"}
    local api_timeout = NumberField{parent=net_c_2,x=20,y=10,width=7,default=ini_cfg.API_Timeout,min=2,max=25,max_chars=6,max_frac_digits=2,allow_decimal=true,fg_bg=bw_fg_bg}

    TextBox{parent=net_c_2,x=28,y=8,height=4,width=7,text="seconds\n\nseconds",fg_bg=g_lg_fg_bg}

    local ct_err = TextBox{parent=net_c_2,x=8,y=14,width=35,text="Please set all connection timeouts.",fg_bg=cpair(colors.red,colors.lightGray),hidden=true}

    local function submit_timeouts()
        local svr_cto, api_cto = tonumber(svr_timeout.get_value()), tonumber(api_timeout.get_value())
        if svr_cto ~= nil and api_cto ~= nil then
            tmp_cfg.SVR_Timeout, tmp_cfg.API_Timeout = svr_cto, api_cto
            net_pane.set_value(3)
            ct_err.hide(true)
        else ct_err.show() end
    end

    PushButton{parent=net_c_2,x=1,y=14,text="\x1b Back",callback=function()net_pane.set_value(1)end,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=net_c_2,x=44,y=14,text="Next \x1a",callback=submit_timeouts,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    TextBox{parent=net_c_3,x=1,y=1,text="Please set the trusted range below."}
    TextBox{parent=net_c_3,x=1,y=3,height=3,text="Setting this to a value larger than 0 prevents connections with devices that many meters (blocks) away in any direction.",fg_bg=g_lg_fg_bg}
    TextBox{parent=net_c_3,x=1,y=7,height=2,text="This is optional. You can disable this functionality by setting the value to 0.",fg_bg=g_lg_fg_bg}

    local range = NumberField{parent=net_c_3,x=1,y=10,width=10,default=ini_cfg.TrustedRange,min=0,max_chars=20,allow_decimal=true,fg_bg=bw_fg_bg}

    local tr_err = TextBox{parent=net_c_3,x=8,y=14,width=35,text="Please set the trusted range.",fg_bg=cpair(colors.red,colors.lightGray),hidden=true}

    local function submit_tr()
        local range_val = tonumber(range.get_value())
        if range_val ~= nil then
            tmp_cfg.TrustedRange = range_val
            comms.set_trusted_range(range_val)
            net_pane.set_value(4)
            tr_err.hide(true)
        else tr_err.show() end
    end

    PushButton{parent=net_c_3,x=1,y=14,text="\x1b Back",callback=function()net_pane.set_value(2)end,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=net_c_3,x=44,y=14,text="Next \x1a",callback=submit_tr,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    TextBox{parent=net_c_4,x=1,y=1,height=2,text="Optionally, set the facility authentication key below. Do NOT use one of your passwords."}
    TextBox{parent=net_c_4,x=1,y=4,height=6,text="This enables verifying that messages are authentic, so it is intended for security on multiplayer servers. All devices on the same network MUST use the same key if any device has a key. This does result in some extra computation (can slow things down).",fg_bg=g_lg_fg_bg}

    TextBox{parent=net_c_4,x=1,y=11,text="Facility Auth Key"}
    local key, _ = TextField{parent=net_c_4,x=1,y=12,max_len=64,value=ini_cfg.AuthKey,width=32,height=1,fg_bg=bw_fg_bg}

    local function censor_key(enable) key.censor(tri(enable, "*", nil)) end

    local hide_key = Checkbox{parent=net_c_4,x=34,y=12,label="Hide",box_fg_bg=cpair(colors.lightBlue,colors.black),callback=censor_key}

    hide_key.set_value(true)
    censor_key(true)

    local key_err = TextBox{parent=net_c_4,x=8,y=14,width=35,text="Key must be at least 8 characters.",fg_bg=cpair(colors.red,colors.lightGray),hidden=true}

    local function submit_auth()
        local v = key.get_value()
        if string.len(v) == 0 or string.len(v) >= 8 then
            tmp_cfg.AuthKey = key.get_value()
            key_err.hide(true)

            -- init mac for supervisor connection
            if string.len(v) >= 8 then network.init_mac(tmp_cfg.AuthKey) else network.deinit_mac() end

            -- prep supervisor connection screen
            tool_ctl.init_sv_connect_ui()

            main_pane.set_value(3)
        else key_err.show() end
    end

    PushButton{parent=net_c_4,x=1,y=14,text="\x1b Back",callback=function()net_pane.set_value(3)end,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=net_c_4,x=44,y=14,text="Next \x1a",callback=submit_auth,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    --#endregion

    --#region Logging

    local log_c_1 = Div{parent=log_cfg,x=2,y=4,width=49}

    TextBox{parent=log_cfg,x=1,y=2,text=" Logging Configuration",fg_bg=cpair(colors.black,colors.pink)}

    TextBox{parent=log_c_1,x=1,y=1,text="Please configure logging below."}

    TextBox{parent=log_c_1,x=1,y=3,text="Log File Mode"}
    local mode = RadioButton{parent=log_c_1,x=1,y=4,default=ini_cfg.LogMode+1,options={"Append on Startup","Replace on Startup"},callback=function()end,radio_colors=cpair(colors.lightGray,colors.black),select_color=colors.pink}

    TextBox{parent=log_c_1,x=1,y=7,text="Log File Path"}
    local path = TextField{parent=log_c_1,x=1,y=8,width=49,height=1,value=ini_cfg.LogPath,max_len=128,fg_bg=bw_fg_bg}

    local en_dbg = Checkbox{parent=log_c_1,x=1,y=10,default=ini_cfg.LogDebug,label="Enable Logging Debug Messages",box_fg_bg=cpair(colors.pink,colors.black)}
    TextBox{parent=log_c_1,x=3,y=11,height=2,text="This results in much larger log files. It is best to only use this when there is a problem.",fg_bg=g_lg_fg_bg}

    local path_err = TextBox{parent=log_c_1,x=8,y=14,width=35,text="Please provide a log file path.",fg_bg=cpair(colors.red,colors.lightGray),hidden=true}

    local function submit_log()
        if path.get_value() ~= "" then
            path_err.hide(true)
            tmp_cfg.LogMode = mode.get_value() - 1
            tmp_cfg.LogPath = path.get_value()
            tmp_cfg.LogDebug = en_dbg.get_value()
            tool_ctl.color_apply.hide(true)
            tool_ctl.color_next.show()
            main_pane.set_value(8)
        else path_err.show() end
    end

    PushButton{parent=log_c_1,x=1,y=14,text="\x1b Back",callback=function()main_pane.set_value(6)end,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=log_c_1,x=44,y=14,text="Next \x1a",callback=submit_log,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    --#endregion

    --#region Color Options

    local clr_c_1 = Div{parent=clr_cfg,x=2,y=4,width=49}
    local clr_c_2 = Div{parent=clr_cfg,x=2,y=4,width=49}
    local clr_c_3 = Div{parent=clr_cfg,x=2,y=4,width=49}
    local clr_c_4 = Div{parent=clr_cfg,x=2,y=4,width=49}

    local clr_pane = MultiPane{parent=clr_cfg,x=1,y=4,panes={clr_c_1,clr_c_2,clr_c_3,clr_c_4}}

    TextBox{parent=clr_cfg,x=1,y=2,text=" Color Configuration",fg_bg=cpair(colors.black,colors.magenta)}

    TextBox{parent=clr_c_1,x=1,y=1,height=2,text="Here you can select the color themes for the different UI displays."}
    TextBox{parent=clr_c_1,x=1,y=4,height=2,text="Click 'Accessibility' below to access colorblind assistive options.",fg_bg=g_lg_fg_bg}

    TextBox{parent=clr_c_1,x=1,y=7,text="Main UI Theme"}
    local main_theme = RadioButton{parent=clr_c_1,x=1,y=8,default=ini_cfg.MainTheme,options=themes.UI_THEME_NAMES,callback=function()end,radio_colors=cpair(colors.lightGray,colors.black),select_color=colors.magenta}

    TextBox{parent=clr_c_1,x=18,y=7,text="Front Panel Theme"}
    local fp_theme = RadioButton{parent=clr_c_1,x=18,y=8,default=ini_cfg.FrontPanelTheme,options=themes.FP_THEME_NAMES,callback=function()end,radio_colors=cpair(colors.lightGray,colors.black),select_color=colors.magenta}

    TextBox{parent=clr_c_2,x=1,y=1,height=6,text="This system uses color heavily to distinguish ok and not, with some indicators using many colors. By selecting a mode below, indicators will change as shown. For non-standard modes, indicators with more than two colors will usually be split up."}

    TextBox{parent=clr_c_2,x=21,y=7,text="Preview"}
    local _ = IndLight{parent=clr_c_2,x=21,y=8,label="Good",colors=cpair(colors.black,colors.green)}
    _ = IndLight{parent=clr_c_2,x=21,y=9,label="Warning",colors=cpair(colors.black,colors.yellow)}
    _ = IndLight{parent=clr_c_2,x=21,y=10,label="Bad",colors=cpair(colors.black,colors.red)}
    local b_off = IndLight{parent=clr_c_2,x=21,y=11,label="Off",colors=cpair(colors.black,colors.black),hidden=true}
    local g_off = IndLight{parent=clr_c_2,x=21,y=11,label="Off",colors=cpair(colors.gray,colors.gray),hidden=true}

    local function recolor(value)
        local c = themes.smooth_stone.color_modes[value]

        if value == themes.COLOR_MODE.STANDARD or value == themes.COLOR_MODE.BLUE_IND then
            b_off.hide()
            g_off.show()
        else
            g_off.hide()
            b_off.show()
        end

        if #c == 0 then
            for i = 1, #style.colors do term.setPaletteColor(style.colors[i].c, style.colors[i].hex) end
        else
            term.setPaletteColor(colors.green, c[1].hex)
            term.setPaletteColor(colors.yellow, c[2].hex)
            term.setPaletteColor(colors.red, c[3].hex)
        end
    end

    TextBox{parent=clr_c_2,x=1,y=7,width=10,text="Color Mode"}
    local c_mode = RadioButton{parent=clr_c_2,x=1,y=8,default=ini_cfg.ColorMode,options=themes.COLOR_MODE_NAMES,callback=recolor,radio_colors=cpair(colors.lightGray,colors.black),select_color=colors.magenta}

    TextBox{parent=clr_c_2,x=21,y=13,height=2,width=18,text="Note: exact color varies by theme.",fg_bg=g_lg_fg_bg}

    PushButton{parent=clr_c_2,x=44,y=14,min_width=6,text="Done",callback=function()clr_pane.set_value(1)end,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    local function back_from_colors()
        main_pane.set_value(tri(tool_ctl.jumped_to_color, 1, 7))
        tool_ctl.jumped_to_color = false
        recolor(1)
    end

    local function show_access()
        clr_pane.set_value(2)
        recolor(c_mode.get_value())
    end

    local function submit_colors()
        tmp_cfg.MainTheme = main_theme.get_value()
        tmp_cfg.FrontPanelTheme = fp_theme.get_value()
        tmp_cfg.ColorMode = c_mode.get_value()

        if tool_ctl.jumped_to_color then
            settings.set("MainTheme", tmp_cfg.MainTheme)
            settings.set("FrontPanelTheme", tmp_cfg.FrontPanelTheme)
            settings.set("ColorMode", tmp_cfg.ColorMode)

            if settings.save("/coordinator.settings") then
                load_settings(settings_cfg, true)
                load_settings(ini_cfg)
                clr_pane.set_value(3)
            else
                clr_pane.set_value(4)
            end
        else
            tool_ctl.gen_summary(tmp_cfg)
            tool_ctl.viewing_config = false
            self.importing_legacy = false
            tool_ctl.settings_apply.show()
            main_pane.set_value(9)
        end
    end

    PushButton{parent=clr_c_1,x=1,y=14,text="\x1b Back",callback=back_from_colors,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=clr_c_1,x=8,y=14,min_width=15,text="Accessibility",callback=show_access,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    tool_ctl.color_next = PushButton{parent=clr_c_1,x=44,y=14,text="Next \x1a",callback=submit_colors,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    tool_ctl.color_apply = PushButton{parent=clr_c_1,x=43,y=14,min_width=7,text="Apply",callback=submit_colors,fg_bg=cpair(colors.black,colors.green),active_fg_bg=btn_act_fg_bg}

    tool_ctl.color_apply.hide(true)

    local function c_go_home()
        main_pane.set_value(1)
        clr_pane.set_value(1)
    end

    TextBox{parent=clr_c_3,x=1,y=1,text="Settings saved!"}
    PushButton{parent=clr_c_3,x=1,y=14,min_width=6,text="Exit",callback=exit,fg_bg=cpair(colors.black,colors.red),active_fg_bg=cpair(colors.white,colors.gray)}
    PushButton{parent=clr_c_3,x=44,y=14,min_width=6,text="Home",callback=c_go_home,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    TextBox{parent=clr_c_4,x=1,y=1,height=5,text="Failed to save the settings file.\n\nThere may not be enough space for the modification or server file permissions may be denying writes."}
    PushButton{parent=clr_c_4,x=1,y=14,min_width=6,text="Exit",callback=exit,fg_bg=cpair(colors.black,colors.red),active_fg_bg=cpair(colors.white,colors.gray)}
    PushButton{parent=clr_c_4,x=44,y=14,min_width=6,text="Home",callback=c_go_home,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}

    --#endregion

    --#region Summary and Saving

    local sum_c_1 = Div{parent=summary,x=2,y=4,width=49}
    local sum_c_2 = Div{parent=summary,x=2,y=4,width=49}
    local sum_c_3 = Div{parent=summary,x=2,y=4,width=49}
    local sum_c_4 = Div{parent=summary,x=2,y=4,width=49}

    local sum_pane = MultiPane{parent=summary,x=1,y=4,panes={sum_c_1,sum_c_2,sum_c_3,sum_c_4}}

    TextBox{parent=summary,x=1,y=2,text=" Summary",fg_bg=cpair(colors.black,colors.green)}

    local setting_list = ListBox{parent=sum_c_1,x=1,y=1,height=12,width=49,scroll_height=100,fg_bg=bw_fg_bg,nav_fg_bg=g_lg_fg_bg,nav_active=cpair(colors.black,colors.gray)}

    local function back_from_summary()
        if tool_ctl.viewing_config or self.importing_legacy then
            main_pane.set_value(1)
            tool_ctl.viewing_config = false
            self.importing_legacy = false
            tool_ctl.settings_apply.show()
        else
            main_pane.set_value(8)
        end
    end

    ---@param element graphics_element
    ---@param data any
    local function try_set(element, data)
        if data ~= nil then element.set_value(data) end
    end

    local function save_and_continue()
        for _, field in ipairs(fields) do
            local k, v = field[1], tmp_cfg[field[1]]
            if v == nil then settings.unset(k) else settings.set(k, v) end
        end

        if settings.save("/coordinator.settings") then
            load_settings(settings_cfg, true)
            load_settings(ini_cfg)

            try_set(svr_chan, ini_cfg.SVR_Channel)
            try_set(crd_chan, ini_cfg.CRD_Channel)
            try_set(pkt_chan, ini_cfg.PKT_Channel)
            try_set(svr_timeout, ini_cfg.SVR_Timeout)
            try_set(api_timeout, ini_cfg.API_Timeout)
            try_set(range, ini_cfg.TrustedRange)
            try_set(key, ini_cfg.AuthKey)
            try_set(tool_ctl.num_units, ini_cfg.UnitCount)
            try_set(tool_ctl.dis_flow_view, ini_cfg.DisableFlowView)
            try_set(tool_ctl.s_vol, ini_cfg.SpeakerVolume)
            try_set(tool_ctl.pellet_color, ini_cfg.GreenPuPellet)
            try_set(tool_ctl.clock_fmt, tri(ini_cfg.Time24Hour, 1, 2))
            try_set(tool_ctl.temp_scale, ini_cfg.TempScale)
            try_set(tool_ctl.energy_scale, ini_cfg.EnergyScale)
            try_set(mode, ini_cfg.LogMode)
            try_set(path, ini_cfg.LogPath)
            try_set(en_dbg, ini_cfg.LogDebug)
            try_set(main_theme, ini_cfg.MainTheme)
            try_set(fp_theme, ini_cfg.FrontPanelTheme)
            try_set(c_mode, ini_cfg.ColorMode)

            preset_monitor_fields()

            tool_ctl.gen_mon_list()

            tool_ctl.view_cfg.enable()
            tool_ctl.color_cfg.enable()

            if self.importing_legacy then
                self.importing_legacy = false
                sum_pane.set_value(3)
            else
                sum_pane.set_value(2)
            end
        else
            sum_pane.set_value(4)
        end
    end

    PushButton{parent=sum_c_1,x=1,y=14,text="\x1b Back",callback=back_from_summary,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    self.show_key_btn = PushButton{parent=sum_c_1,x=8,y=14,min_width=17,text="Unhide Auth Key",callback=function()self.show_auth_key()end,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg,dis_fg_bg=btn_dis_fg_bg}
    tool_ctl.settings_apply = PushButton{parent=sum_c_1,x=43,y=14,min_width=7,text="Apply",callback=save_and_continue,fg_bg=cpair(colors.black,colors.green),active_fg_bg=btn_act_fg_bg}

    TextBox{parent=sum_c_2,x=1,y=1,text="Settings saved!"}

    local function go_home()
        main_pane.set_value(1)
        net_pane.set_value(1)
        fac_pane.set_value(1)
        mon_pane.set_value(1)
        clr_pane.set_value(1)
        sum_pane.set_value(1)
    end

    PushButton{parent=sum_c_2,x=1,y=14,min_width=6,text="Home",callback=go_home,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=sum_c_2,x=44,y=14,min_width=6,text="Exit",callback=exit,fg_bg=cpair(colors.black,colors.red),active_fg_bg=cpair(colors.white,colors.gray)}

    TextBox{parent=sum_c_3,x=1,y=1,height=2,text="The old config.lua and coord.settings files will now be deleted, then the configurator will exit."}

    local function delete_legacy()
        fs.delete("/coordinator/config.lua")
        fs.delete("/coord.settings")
        exit()
    end

    PushButton{parent=sum_c_3,x=1,y=14,min_width=8,text="Cancel",callback=go_home,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=sum_c_3,x=44,y=14,min_width=6,text="OK",callback=delete_legacy,fg_bg=cpair(colors.black,colors.green),active_fg_bg=cpair(colors.white,colors.gray)}

    TextBox{parent=sum_c_4,x=1,y=1,height=5,text="Failed to save the settings file.\n\nThere may not be enough space for the modification or server file permissions may be denying writes."}
    PushButton{parent=sum_c_4,x=1,y=14,min_width=6,text="Home",callback=go_home,fg_bg=nav_fg_bg,active_fg_bg=btn_act_fg_bg}
    PushButton{parent=sum_c_4,x=44,y=14,min_width=6,text="Exit",callback=exit,fg_bg=cpair(colors.black,colors.red),active_fg_bg=cpair(colors.white,colors.gray)}

    --#endregion

    --#region Tool Functions

    -- load a legacy config file
    function tool_ctl.load_legacy()
        local config = require("coordinator.config")

        tmp_cfg.SVR_Channel = config.SVR_CHANNEL
        tmp_cfg.CRD_Channel = config.CRD_CHANNEL
        tmp_cfg.PKT_Channel = config.PKT_CHANNEL
        tmp_cfg.SVR_Timeout = config.SV_TIMEOUT
        tmp_cfg.API_Timeout = config.API_TIMEOUT
        tmp_cfg.TrustedRange = config.TRUSTED_RANGE
        tmp_cfg.AuthKey = config.AUTH_KEY or ""

        tmp_cfg.UnitCount = config.NUM_UNITS
        tmp_cfg.DisableFlowView = config.DISABLE_FLOW_VIEW
        tmp_cfg.SpeakerVolume = config.SOUNDER_VOLUME
        tmp_cfg.Time24Hour = config.TIME_24_HOUR

        tmp_cfg.LogMode = config.LOG_MODE
        tmp_cfg.LogPath = config.LOG_PATH
        tmp_cfg.LogDebug = config.LOG_DEBUG or false

        settings.load("/coord.settings")

        tmp_cfg.MainDisplay = settings.get("PRIMARY_DISPLAY")
        tmp_cfg.FlowDisplay = settings.get("FLOW_DISPLAY")
        tmp_cfg.UnitDisplays = settings.get("UNIT_DISPLAYS", {})

        -- if there are extra monitor entries, delete them now
        -- not doing so will cause the app to fail to start
        if tool_ctl.is_int_min_max(tmp_cfg.UnitCount, 1, 4) then
            for i = tmp_cfg.UnitCount + 1, 4 do tmp_cfg.UnitDisplays[i] = nil end
        end

        if settings.get("ControlStates") == nil then
            local ctrl_states = {
                process = settings.get("PROCESS"),
                waste_modes = settings.get("WASTE_MODES"),
                priority_groups = settings.get("PRIORITY_GROUPS"),
            }

            settings.set("ControlStates", ctrl_states)
        end

        settings.unset("PRIMARY_DISPLAY")
        settings.unset("FLOW_DISPLAY")
        settings.unset("UNIT_DISPLAYS")
        settings.unset("PROCESS")
        settings.unset("WASTE_MODES")
        settings.unset("PRIORITY_GROUPS")

        tool_ctl.gen_summary(tmp_cfg)
        sum_pane.set_value(1)
        main_pane.set_value(9)
        self.importing_legacy = true
    end

    -- expose the auth key on the summary page
    function self.show_auth_key()
        self.show_key_btn.disable()
        self.auth_key_textbox.set_value(self.auth_key_value)
    end

    -- generate the summary list
    ---@param cfg crd_config
    function tool_ctl.gen_summary(cfg)
        setting_list.remove_all()

        local alternate = false
        local inner_width = setting_list.get_width() - 1

        self.show_key_btn.enable()
        self.auth_key_value = cfg.AuthKey or "" -- to show auth key

        for i = 1, #fields do
            local f = fields[i]
            local height = 1
            local label_w = string.len(f[2])
            local val_max_w = (inner_width - label_w) + 1
            local raw = cfg[f[1]]
            local val = util.strval(raw)

            if f[1] == "AuthKey" then val = string.rep("*", string.len(val))
            elseif f[1] == "LogMode" then val = util.trinary(raw == log.MODE.APPEND, "append", "replace")
            elseif f[1] == "GreenPuPellet" then
                val = tri(raw, "Green Pu/Cyan Po", "Cyan Pu/Green Po")
            elseif f[1] == "TempScale" then
                val = util.strval(types.TEMP_SCALE_NAMES[raw])
            elseif f[1] == "EnergyScale" then
                val = util.strval(types.ENERGY_SCALE_NAMES[raw])
            elseif f[1] == "MainTheme" then
                val = util.strval(themes.ui_theme_name(raw))
            elseif f[1] == "FrontPanelTheme" then
                val = util.strval(themes.fp_theme_name(raw))
            elseif f[1] == "ColorMode" then
                val = util.strval(themes.color_mode_name(raw))
            elseif f[1] == "UnitDisplays" and type(cfg.UnitDisplays) == "table" then
                val = ""
                for idx = 1, #cfg.UnitDisplays do
                    val = val .. util.trinary(idx == 1, "", "\n") .. util.sprintf(" \x07 Unit %d - %s", idx, cfg.UnitDisplays[idx])
                end
            end

            if val == "nil" then val = "<not set>" end

            local c = util.trinary(alternate, g_lg_fg_bg, cpair(colors.gray,colors.white))
            alternate = not alternate

            if (string.len(val) > val_max_w) or string.find(val, "\n") then
                local lines = util.strwrap(val, inner_width)
                height = #lines + 1
            end

            if (f[1] == "UnitDisplays") and (height == 1) and (val ~= "<not set>") then height = 2 end

            local line = Div{parent=setting_list,height=height,fg_bg=c}
            TextBox{parent=line,text=f[2],width=string.len(f[2]),fg_bg=cpair(colors.black,line.get_fg_bg().bkg)}

            local textbox
            if height > 1 then
                textbox = TextBox{parent=line,x=1,y=2,text=val,height=height-1}
            else
                textbox = TextBox{parent=line,x=label_w+1,y=1,text=val,alignment=RIGHT}
            end

            if f[1] == "AuthKey" then self.auth_key_textbox = textbox end
        end
    end

    --#endregion
end

return system
