// Error viewing datums, responsible for storing error info, notifying admins

// when errors occur, and showing them to admins on demand.

// There are 3 different types used here:

//

// - error_cache keeps track of all error sources, as well as all individually

// logged errors. Only one instance of this datum should ever exist, and it's

// right here:

#ifdef USE_CUSTOM_ERROR_HANDLER

GLOBAL_DATUM_INIT(error_cache, /datum/error_viewer/error_cache, new)

#else

// If debugging is disabled, there's nothing useful to log, so don't bother.

GLOBAL_DATUM(error_cache, /datum/error_viewer/error_cache)

#endif

// - error_source datums exist for each line (of code) that generates an error,

// and keep track of all errors generated by that line.

//

// - error_entry datums exist for each logged error, and keep track of all

// relevant info about that error.

// Common vars and procs are kept at the error_viewer level

/datum/error_viewer

var/name = ""

/datum/error_viewer/proc/browse_to(client/user, html)

var/datum/browser/browser = new(user.mob, "error_viewer", null, 600, 400)

browser.set_content(html)

browser.add_head_content({"

<style>

.runtime

{

background-color: #171717;

border: solid 1px #202020;

font-family: "Courier New";

padding-left: 10px;

color: #CCCCCC;

}

.runtime_line

{

margin-bottom: 10px;

display: inline-block;

}

</style>

"})

browser.open()

/datum/error_viewer/proc/build_header(datum/error_viewer/back_to, linear)

// Common starter HTML for show_to

. = ""

if (istype(back_to))

. += back_to.make_link("<b>&lt;&lt;&lt;</b>", null, linear)

. += "[make_link("Refresh")]<br><br>"

/datum/error_viewer/proc/show_to(user, datum/error_viewer/back_to, linear)

// Specific to each child type

return

/datum/error_viewer/proc/make_link(linktext, datum/error_viewer/back_to, linear)

var/back_to_param = ""

if (!linktext)

linktext = name

if (istype(back_to))

back_to_param = ";viewruntime_backto=[REF(back_to)]"

if (linear)

back_to_param += ";viewruntime_linear=1"

return "<a href='?_src_=holder;[HrefToken()];viewruntime=[REF(src)][back_to_param]'>[linktext]</a>"

/datum/error_viewer/error_cache

var/list/errors = list()

var/list/error_sources = list()

var/list/errors_silenced = list()

/datum/error_viewer/error_cache/show_to(user, datum/error_viewer/back_to, linear)

var/html = build_header()

html += "<b>[GLOB.total_runtimes]</b> runtimes, <b>[GLOB.total_runtimes_skipped]</b> skipped<br><br>"

if (!linear)

html += "organized | [make_link("linear", null, 1)]<hr>"

var/datum/error_viewer/error_source/error_source

for (var/erroruid in error_sources)

error_source = error_sources[erroruid]

html += "[error_source.make_link(null, src)]<br>"

else

html += "[make_link("organized", null)] | linear<hr>"

for (var/datum/error_viewer/error_entry/error_entry in errors)

html += "[error_entry.make_link(null, src, 1)]<br>"

browse_to(user, html)

/datum/error_viewer/error_cache/proc/log_error(exception/e, list/desclines, skip_count)

if (!istype(e))

return // Abnormal exception, don't even bother

var/erroruid = "[e.file][e.line]"

var/datum/error_viewer/error_source/error_source = error_sources[erroruid]

if (!error_source)

error_source = new(e)

error_sources[erroruid] = error_source

var/datum/error_viewer/error_entry/error_entry = new(e, desclines, skip_count)

error_entry.error_source = error_source

errors += error_entry

error_source.errors += error_entry

if (skip_count)

return // Skip notifying admins about skipped errors.

// Show the error to admins with debug messages turned on, but only if one

// from the same source hasn't been shown too recently

if (error_source.next_message_at <= world.time)

var/const/viewtext = "\[view]" // Nesting these in other brackets went poorly

//log_debug("Runtime in <b>[e.file]</b>, line <b>[e.line]</b>: <b>[html_encode(e.name)]</b> [error_entry.make_link(viewtext)]")

var/err_msg_delay

if(config)

err_msg_delay = CONFIG_GET(number/error_msg_delay)

else

var/datum/config_entry/CE = /datum/config_entry/number/error_msg_delay

err_msg_delay = initial(CE.config_entry_value)

error_source.next_message_at = world.time + err_msg_delay

/datum/error_viewer/error_source

var/list/errors = list()

var/next_message_at = 0

/datum/error_viewer/error_source/New(exception/e)

if (!istype(e))

name = "\[[time_stamp()]] Uncaught exceptions"

return

name = "<b>\[[time_stamp()]]</b> Runtime in <b>[e.file]</b>, line <b>[e.line]</b>: <b>[html_encode(e.name)]</b>"

/datum/error_viewer/error_source/show_to(user, datum/error_viewer/back_to, linear)

if (!istype(back_to))

back_to = GLOB.error_cache

var/html = build_header(back_to)

for (var/datum/error_viewer/error_entry/error_entry in errors)

html += "[error_entry.make_link(null, src)]<br>"

browse_to(user, html)

/datum/error_viewer/error_entry

var/datum/error_viewer/error_source/error_source

var/exception/exc

var/desc = ""

var/usr_ref

var/turf/usr_loc

var/is_skip_count

/datum/error_viewer/error_entry/New(exception/e, list/desclines, skip_count)

if (!istype(e))

name = "<b>\[[time_stamp()]]</b> Uncaught exception: <b>[html_encode(e.name)]</b>"

return

if(skip_count)

name = "\[[time_stamp()]] Skipped [skip_count] runtimes in [e.file],[e.line]."

is_skip_count = TRUE

return

name = "<b>\[[time_stamp()]]</b> Runtime in <b>[e.file]</b>, line <b>[e.line]</b>: <b>[html_encode(e.name)]</b>"

exc = e

if (istype(desclines))

for (var/line in desclines)

// There's probably a better way to do this than non-breaking spaces...

desc += "[span_runtime_line("[html_encode(line)]")]<br>"

if (usr)

usr_ref = "[REF(usr)]"

usr_loc = get_turf(usr)

/datum/error_viewer/error_entry/show_to(user, datum/error_viewer/back_to, linear)

if (!istype(back_to))

back_to = error_source

var/html = build_header(back_to, linear)

html += "[name]<div class='runtime'>[desc]</div>"

if (usr_ref)

html += "<br><b>usr</b>: <a href='?_src_=vars;[HrefToken()];Vars=[usr_ref]'>VV</a>"

html += " <a href='?_src_=holder;[HrefToken()];adminplayeropts=[usr_ref]'>PP</a>"

html += " <a href='?_src_=holder;[HrefToken()];adminplayerobservefollow=[usr_ref]'>Follow</a>"

if (istype(usr_loc))

html += "<br><b>usr.loc</b>: <a href='?_src_=vars;[HrefToken()];Vars=[REF(usr_loc)]'>VV</a>"

html += " <a href='?_src_=holder;[HrefToken()];adminplayerobservecoodjump=1;X=[usr_loc.x];Y=[usr_loc.y];Z=[usr_loc.z]'>JMP</a>"

browse_to(user, html)

/datum/error_viewer/error_entry/make_link(linktext, datum/error_viewer/back_to, linear)

return is_skip_count ? name : ..()