# The trivia engine YAY
# vim: foldmethod=marker:foldcolumn=2:foldmarker=<<<,>>>:sw=2:ts=2

### INIT <<<
# load mysqltcl
package require mysqltcl

# the channel to play in
set trivia_channel "#triviacow"

# the time between hints (sec)
set trivia_speed 20

# the time between rounds (sec)
set trivia_delay 30

# hold the current question info <<<
set trivia_q_id ""
set trivia_q_cat ""
set trivia_q_question ""
set trivia_q_answer ""
set trivia_q_hint ""
set trivia_q_attempts 0
set trivia_unanswered 0
set trivia_run_last 0
set trivia_run_qty 0
set trivia_run_nick ""
set trivia_guesser ""
set trivia_guesser_count 0
set trivia_last_qid 0

if [info exists trivia_must_rehash] {
  if {$trivia_must_rehash == 1} {
	  set trivia_must_rehash 2
	} else {
	  set trivia_must_rehash 0
	}
} else {
	set trivia_must_rehash 0
}
#>>>

# 0 = off
# 1 = on
# -1 = disabled
set trivia_status 0

set trivia_timer ""
set trivia_watchdog_timer ""
set trivia_last_ts 0

#colours <<<
set trivia_c(off) "\003"
set trivia_c(red) "\0034"
set trivia_c(blue) "\0033"
set trivia_c(purple) "\0036"
set trivia_c(bold) "\002"
#>>>

bind pubm - * trivia_input
bind msg - trivia trivia_msg

# connect mysql <<<
proc trivia_connect { } {
	global trivia_db_handle
	set trivia_db_handle [mysqlconnect -host localhost -user root -password 7MKh3ako -db trivialive]
}
#>>>

#>>>

### SETTINGS <<<
set trivia_flag T
set trivia_admin S
# >>>


# Handle a /msg
proc trivia_msg { nick host handle cmd } {
	#<<<
	global trivia_db_handle trivia_last_qid
	global trivia_q_cat trivia_c

	regsub "(trivia )" $cmd "" cmd
	putlog "trivia: msg command $cmd from $nick"

	if {($nick == "Greeneyez") || ($nick == "JamesOff")} {
		if [regexp -nocase "^setcat (.+)" $cmd matches category] {

			if {$trivia_last_qid == 0} {
				puthelp "PRIVMSG $nick :Can't fathom last question, unable to update category"
				return
			}

			set orig_cat $category
			set category [mysqlescape $category]
			set sql "SELECT cat_id FROM categories WHERE cat_name='$category'"
			set result [mysqlquery $trivia_db_handle $sql]

			if {[set row [mysqlnext $result]] != ""} {
				set cat_id [lindex $row 0]
				mysqlendquery $result
				puthelp "PRIVMSG $nick :Moving question $trivia_last_qid to category$trivia_c(purple) $category$trivia_c(off) ($cat_id)"
				set sql "UPDATE questions SET cat_id='$cat_id' WHERE question_id='$trivia_last_qid'"
				mysqlexec $trivia_db_handle $sql
				set trivia_q_cat $orig_cat
				return
			} else {
				puthelp "PRIVMSG $nick :Creating new category$trivia_c(purple) $category"
				set sql "INSERT INTO categories VALUES (null, '$category', 1)"
				mysqlexec $trivia_db_handle $sql
				set cat_id [mysqlinsertid $trivia_db_handle]
				puthelp "PRIVMSG $nick :Moving question $trivia_last_qid to category$trivia_c(purple) $category$trivia_c(off) ($cat_id)"
				set sql "UPDATE questions SET cat_id='$cat_id' WHERE question_id='$trivia_last_qid'"
				mysqlexec $trivia_db_handle $sql
				set trivia_q_cat $orig_cat
				return
			}
		}
	}
}
#>>>

# Handle input coming from a channel
proc trivia_input { nick host handle channel arg } {
#<<<
	global trivia_channel trivia_status trivia_q_answer
	global trivia_guesser_count trivia_guesser trivia_c

	if {[string tolower $trivia_channel] != [string tolower $channel]} {
		return 0
	}

	if [regexp -nocase "^!t(rivia)? (.+)" $arg matches cmd param] {
		trivia_command $nick $host $handle $channel $param
		return 0
	}

	if [regexp -nocase "^!t(rivia)?$" $arg] {
		if {$trivia_status == 1} {
			puthelp "PRIVMSG $trivia_channel :!trivia ... ?"
			return 0
		} else {
			puthelp "PRIGMSG $trivia_channel :Perhaps you want $trivia_c(purple)!trivia start"
			return 0
		}
	}

	# need to be running below here
	if {$trivia_status == -1} {
		return 0
	}

	if {$trivia_q_answer == ""} {
		return 0
	}

	#see if someone else is playing
	if {($nick == $trivia_guesser) && ($nick != "NoTopic")} {
		incr trivia_guesser_count
		putloglev d * "$nick has talked $trivia_guesser_count times in a row..."
	} else {
		set trivia_guesser_count 0
		set trivia_guesser $nick
	}

	#tidy the string up
	set arg [string tolower $arg]
	set arg [string trim $arg]
	if {$arg == [string tolower $trivia_q_answer]} {
		trivia_correct $nick
		return 0
	}

	#if they didn't get it right, and it's been more than 20 lines, taunt!
	if {($trivia_guesser_count > 0) && (($trivia_guesser_count % 20)) == 0} {
		putserv "PRIVMSG $trivia_channel :Playing with yourself, $nick? ;)"
		putlog "Is $nick playing with themselves?"
	}
}
#>>>

# Someone got it right!
proc trivia_correct { nick } {
#<<<
	global trivia_q_id trivia_q_cat trivia_q_question trivia_q_answer trivia_q_hint trivia_q_attempts trivia_channel trivia_status
	global trivia_timer trivia_delay trivia_db_handle trivia_unanswered trivia_run_qty trivia_run_last trivia_run_nick trivia_c

	if {$trivia_status != 1} {
		#something strange going on
		return 0
	}

	trivia_killtimer
	set answer $trivia_q_answer
	set trivia_q_answer ""
	set newuser 0

	set uid [trivia_get_uid $nick]
	if {$uid == 0} {
		putlog "$nick does not have entry in database... creating"
		set uid [trivia_create_user $nick]
		set newuser 1
	}

	putlog "$nick has uid $uid"

	trivia_incr_score $uid

	putquick "PRIVMSG $trivia_channel :Congratulations $trivia_c(purple)$nick$trivia_c(off)! The answer was$trivia_c(purple) $answer$trivia_c(off)."
	if {$newuser == 1} {
	  putquick "PRIVMSG $trivia_channel :Welcome to our newest player,  $trivia_c(purple)$nick$trivia_c(off) :)"
	}	
	putquick "PRIVMSG $trivia_channel :rank0rs: [trivia_near_five2 $uid]"

	#set score [trivia_get_score $uid]
	#putserv "PRIVMSG $trivia_channel :$nick now has $score points."

	set trivia_timer [utimer $trivia_delay trivia_start_round]
	set trivia_unanswered 0
	if {$trivia_run_last == $uid} {
		incr trivia_run_qty
		if {$trivia_run_qty > 2} {
			putquick "PRIVMSG $trivia_channel :$nick [trivia_get_run $trivia_run_qty] $trivia_run_qty in a row!"
		}
	} else {
		#end of streak
		if {$trivia_run_qty > 2} {
			putquick "PRIVMSG $trivia_channel :$nick ended $trivia_run_nick's winning spree."
		}
		set trivia_run_qty 1
		set trivia_run_last $uid
		set trivia_run_nick $nick
	}

	if {[rand 100] > 95} {
		putserv "PRIVMSG $trivia_channel :Remember, to report a problem with a question or answer, type $trivia_c(purple)!trivia report <description of problem>"
	}


	trivia_check_rehash
}
#>>>

#See if we need to rehash
proc trivia_check_rehash { } {
#<<<
  global trivia_must_rehash trivia_channel trivia_c
  if {$trivia_must_rehash == 1} {
    putquick "PRIVMSG $trivia_channel :$trivia_c(red)### Please wait, reloading trivia script ###"
		trivia_killtimer
    rehash
  }
}
#>>>

# Turn a winning spree into text
proc trivia_get_run { row } {
#<<<
	switch $row {
		3 {
			return "is on a winning spree!"
		}
		5 {
			return "is on a rampage!"
		}
		6 {
			return "is unstoppable!"
		}
		8 {
			return "is on a Google spree!"
		}
		10 {
			return "is GODLIKE!"
		}
		12 {
		  return "needs to get out more."
		}
	}
	return "is on a roll ..."
}
#>>>

# Get someone's user ID from their nick
proc trivia_get_uid { nick } {
#<<<
	global trivia_db_handle

	putloglev 4 * "trivia_get_uid ($nick)"

	set nick [mysqlescape $nick]
	set sql "SELECT user_id FROM users WHERE user_name = '$nick'"
	set result [mysqlquery $trivia_db_handle $sql]
	#putlog $sql

	if {[set row [mysqlnext $result]] != ""} {
		set user_id [lindex $row 0]
		mysqlendquery $result
		return $user_id
	} else {
		return 0
	}
}
#>>>

# Get a period
proc trivia_get_period { } {
#<<<
	return [expr [clock scan "last friday 23:59" -gmt true] + 60]
}
#>>>

# Get a score from a UID
proc trivia_get_score { user_id } {
#<<<
	global trivia_db_handle

	putloglev 4 * "trivia_get_score ($user_id)"

	set dt [trivia_get_period]

	set sql "SELECT COUNT(*) AS yarr FROM scores WHERE dt > '$dt' AND user_id='$user_id'"

	set result [mysqlquery $trivia_db_handle $sql]

	if {[set row [mysqlnext $result]] != ""} {
		set score [lindex $row 0]
		mysqlendquery $result
		return $score
	} else {
		return 0
	}
}
#>>>

# Turn a timestamp into a date
proc trivia_ts_to_date { ts } {
#<<<
  return [clock format $ts -format "%Y/%m/%d %H:%M"]
}
#>>>

# Get someone's userinfo from their UID
proc trivia_get_userinfo { user_id } {
#<<<
	global trivia_db_handle

	putloglev 4 * "trivia_get_userinfo ($user_id)"

	set sql "SELECT user_score, user_last, user_reg FROM users WHERE user_id = '$user_id'"
	set result [mysqlquery $trivia_db_handle $sql]

	if {[set row [mysqlnext $result]] != ""} {
		set last [lindex $row 1]
		set score [trivia_get_score $user_id]
		if {$last == ""} {
		  set last "Unknown"
		} else {
			set last [trivia_ts_to_date $last]
		}

		set reg [lindex $row 2]
		if {$reg == ""} {
			set reg "Unkown"
		} else {
			set reg [trivia_ts_to_date $reg]
		}

		return "$score|$last|$reg"
		mysqlendquery $result
	} else {
		return "No stats"
	}
}
#>>>

# Get someone's stats from their username
proc trivia_user_stats { user_name } {
#<<<
	global trivia_channel

	set uid [trivia_get_uid $user_name]
	if {$uid == 0} {
		putserv "PRIVMSG $trivia_channel :Unknown user '$user_name'"
		return
	}
	set stats [trivia_get_userinfo $uid]
	if {$stats == "No stats"} {
		putserv "PRIVMSG $trivia_channel :No stats available."
		return
	}

	set stats2 [split $stats "|"]
	putserv "PRIVMSG $trivia_channel :Trivia stats for $user_name:"
	putserv "PRIVMSG $trivia_channel :  Current score: [lindex $stats2 0]"
	putserv "PRIVMSG $trivia_channel :        Ranking: [trivia_get_rank $uid]"
	putserv "PRIVMSG $trivia_channel :     First seen: [lindex $stats2 2]"
	putserv "PRIVMSG $trivia_channel :    Last scored: [lindex $stats2 1]"
}
#>>>

# Increase a UID's score
proc trivia_incr_score { id { howmuch 1 } } {
#<<<
	global trivia_db_handle

	putloglev 4 * "trivia_incr_score ($id, $howmuch)"

	#set sql "UPDATE users SET user_score = user_score + $howmuch WHERE user_id = '$id'"
	#mysqlexec $trivia_db_handle $sql
	set sql "UPDATE users SET user_last = UNIX_TIMESTAMP() WHERE user_id = '$id'"
	mysqlexec $trivia_db_handle $sql
	set sql "INSERT INTO scores VALUES ('$id', '[clock seconds]')"
	mysqlexec $trivia_db_handle $sql
}
#>>>

# Create a new user
proc trivia_create_user { nick } {
#<<<
	global trivia_db_handle

	putloglev 4 * "trivia_create_user ($nick)"

	set nick [mysqlescape $nick]
	set sql "INSERT INTO users VALUES (null, '$nick', '', 0, UNIX_TIMESTAMP(), UNIX_TIMESTAMP())"
	mysqlexec $trivia_db_handle $sql

	set uid [mysqlinsertid $trivia_db_handle]

	return $uid
}
#>>>

# Handle a !trivia command
proc trivia_command { nick host handle channel param } {
#<<<
	global trivia_channel trivia_status trivia_flag trivia_admin trivia_c

	set arg ""
	regexp {^([^ ]+)( .+)?$} $param matches cmd arg
	set param [string tolower $cmd]
	set arg [string trim $arg]


	putloglev d *  "trivia command: $param from: $nick ($arg)"

	if {[matchattr $handle |$trivia_admin $trivia_channel] && ($param != "enable") && ($trivia_status == -1)} {
		return 0
	}

	if [regexp -nocase "^(score|place)( .+)?" $param] {
		putserv "PRIVMSG $trivia_channel :[trivia_score $arg $nick]"
		if [string match -nocase $nick $arg] {
			putserv "PRIVMSG $trivia_channel :(You know putting your own nick is optional, right? :)"
		}
		return 0
	}

	if {$param == "top10"} {
		putserv "PRIVMSG $trivia_channel :[trivia_get_top10]"
		return 0
	}

	if {$param == "info"} {
		trivia_user_stats $arg
		return 0
	}

	if {$param == "start"} {
		trivia_start
		return 0
	}

	if {$param == "report"} {
		trivia_report $nick $arg
		return 0
	}

  if {![matchattr $handle |$trivia_flag $channel]} {
    putserv "PRIVMSG $nick :use: !trivia \[score|top10|start\]"
    return 0
  }

  if {$param == "stop"} {
    trivia_stop
    return 0
  }


	if {$param == "skip"} {
		trivia_skip $nick
		return 0
	}

	if {$param == "stats"} {
		trivia_stats
		return 0
	}

	if {![matchattr $handle |$trivia_admin $channel]} {
		putserv "PRIVMSG $nick :use: !trivia \[score|top10|start|stop|skip|stats\]"
		return 0
	}

	if {$param == "disable"} {
		trivia_disable
		return 0
	}

	if {$param == "enable"} {
		trivia_enable
		return 0
	}

	if {$param == "merge"} {
		trivia_merge $nick $arg
		#puthelp "PRIGMSG $trivia_channel :Score merging is disabled"
		return 0
	}

	if {$param == "rehash"} {
		trivia_rehash
		return 0
	}

	putserv "PRIVMSG $nick :use: !trivia \[start|stop|score|top10|skip|stats|enable|disable|merge\]"
	return 0
}
#>>>

# Rehash
proc trivia_rehash { } {
#<<<
	global trivia_status trivia_channel trivia_must_rehash
	if {$trivia_must_rehash == 1} {
		putserv "PRIVMSG $trivia_channel :! Reloading trivia now..."
		rehash
		return 0
	}

	if {$trivia_status != 1} {
		putserv "PRIVMSG $trivia_channel :! Reloading trivia now..."
		rehash
		return 0
	}
  set trivia_must_rehash 1
	putserv "PRIVMSG $trivia_channel :Trivia will reload after current round"
}
#>>>

# Disable the script
proc trivia_disable { } {
#<<<
	global trivia_status trivia_channel

	if {$trivia_status == 1} {
		#stop the current game
		trivia_stop
	}

	set trivia_status -1
	putserv "PRIVMSG $trivia_channel :Trivia disabled."
	return 0
}
#>>>

# Enable the script1
proc trivia_enable {} {
#<<<
	global trivia_status trivia_channel

	set trivia_status 0
	putserv "PRIVMSG $trivia_channel :Trivia enabled."

	set alive [::mysql::ping $trivia_db_handle]
	if {$alive == false} {
		putlog "ERROR: mysql has gone away :("
		putquick "PRIVMSG $trivia_channel :Warning: Unable to reach database!"
	}
	return 0
}
#>>>

#Make a hint
proc trivia_make_hint { hint answer } {
#<<<
	set hint [string toupper $hint]
	set answer [string toupper $answer]

	set answer_words [split $answer { }]
	set final_hint ""

	#are we making the very first hint?
	if {$hint == ""} {
		foreach word $answer_words {
			append final_hint [string repeat "_" [string length $word]]
			append final_hint " "
		}

		set final_hint [string trim $final_hint]

		#now put the punctuation in
		set letters [split $answer {}]
		set i 0
		foreach letter $letters {
			if {![regexp -nocase {[A-Z0-9 ]} $letter]} {
				set final_hint [string replace $final_hint $i $i $letter]
			}
			incr i
		}
		return [string trim $final_hint]
	}

	# explode the into words
	set hint_words [split $hint { }]


	set i 0

	foreach word $hint_words {
		set answer_word [lindex $answer_words $i]
		putloglev 1 * "considering $answer_word ($word)"

		#are we on the first iteration?
		if [regexp "^_+$" $word] {
			#use the first letter
			set letters [string length $word]

			#don't hint for single-letter words
			if {$letters > 1} {
				set word [string index $answer_word 0]
				append word [string repeat "_" [expr $letters - 1]]
			} else {
				set word "_"
			}
			append final_hint "$word "
		} else {
			#not the first iteration so figure out where the gaps are
			set gaps [list]
			set letters [split $word {}]
			set j 0
			foreach letter $letters {
				if {$letter == "_"} {
					lappend gaps $j
				}
				incr j
			}
			if {[llength $gaps] <= 1} {
				#eek no letters to replace, or only one gap
				putloglev 1 * "  insufficient gaps, using $word"
				append final_hint "$word "
			} else {
				#now we pick a random letter position
				set pos [trivia_random_element $gaps]
				putloglev 1 * "  filling in $pos"
				set word [string replace $word $pos $pos [string index $answer_word $pos]]
				putloglev 1 * "  --> $word"
				append final_hint "$word "
			}
		}
		incr i
	}
	set final_hint [string trim $final_hint]
	return $final_hint
}
#>>>

# Fetch a question
proc trivia_get_question { } {
#<<<
	global trivia_db_handle trivia_q_id trivia_q_cat trivia_q_question trivia_q_answer trivia_q_hint trivia_channel

	# make sure we're connected
	set alive [::mysql::ping $trivia_db_handle]
	if {$alive == false} {
		putlog "ERROR: mysql has gone away :("
		putquick "PRIVMSG $trivia_channel :Couldn't reach database to load next question :("
		return 0
	}

	set sql "SELECT q.question, q.question_id, q.answer, c.cat_name FROM questions q LEFT JOIN categories c USING (cat_id) WHERE c.cat_enabled=1 ORDER BY count ASC, rand() LIMIT 1"
	set result [mysqlquery $trivia_db_handle $sql]

	if {[set row [mysqlnext $result]] != ""} {
		set trivia_q_id [lindex $row 1]
		set trivia_q_cat [lindex $row 3]
		set trivia_q_question [lindex $row 0]
		set trivia_q_answer [string toupper [lindex $row 2]]
		set trivia_q_hint ""
		mysqlendquery $result
	} else {
		putlog "ERROR: Couldn't fetch a question from the database."
	}

	#update the times used
	set trivia_q_id [mysqlescape $trivia_q_id]
	set sql "UPDATE questions SET count = count + 1 WHERE question_id = '$trivia_q_id'"
	mysqlexec $trivia_db_handle $sql
}
#>>>

# Start a round
proc trivia_start_round { } {
#<<<
	global trivia_q_id trivia_q_cat trivia_q_question trivia_q_answer trivia_q_hint trivia_q_attempts trivia_channel trivia_status trivia_last_qid

	if {$trivia_status != 1} {
		#we're switched off, abort
		return 0
	}

	#init variables
	set trivia_q_id ""
	set trivia_q_cat ""
	set trivia_q_question ""
	set trivia_q_answer ""
	set trivia_q_hint ""

	putlog "Fetching next question..."

	trivia_get_question

	if {$trivia_q_id == ""} {
		putlog "Couldn't init trivia round, aborting."
		return
	}

	putlog "Successfully fetched question $trivia_q_id from database"
	putloglev 4 * "question = $trivia_q_question"
	putloglev 4 * "answer   = $trivia_q_answer"

	set trivia_q_attempts 1

	set trivia_last_qid $trivia_q_id

	trivia_round
}
#>>>

# Run a round
proc trivia_round { } {
#<<<
	global trivia_q_id trivia_q_cat trivia_q_question trivia_q_answer trivia_q_hint trivia_q_attempts trivia_channel trivia_status
	global trivia_timer trivia_speed trivia_c trivia_last_ts

	if {$trivia_status != 1} {
		#we're switched off, abort
		return 0
	}

	if {$trivia_q_attempts == 5} {
		trivia_end_round
		return 0
	}

	if {$trivia_q_answer == ""} {
		return 0
	}

	#update the hint
	set trivia_q_hint [trivia_make_hint $trivia_q_hint $trivia_q_answer]

	#say our stuff
	if {$trivia_q_attempts > 1} {
		set hint " \[[expr $trivia_q_attempts - 1] of 3\]"
	} else {
		set hint ""
	}

	putserv "PRIVMSG $trivia_channel :$trivia_c(red)--== Trivia ==--$trivia_c(off) \[category: \002$trivia_q_cat\002\]"
	#\[question id: \002$trivia_q_id\002\]"
	set split_question [trivia_question_split $trivia_q_question]
	foreach q $split_question {
		if {$q != ""} {
			putserv "PRIVMSG $trivia_channel :$trivia_c(blue) [trivia_question_inject $q]"
		}
	}
	#set new_question [trivia_question_inject $trivia_q_question]
	#putserv "PRIVMSG $trivia_channel :$trivia_c(blue) $new_question"
	putserv "PRIVMSG $trivia_channel :Hint$hint: [trivia_explode $trivia_q_hint]"

	incr trivia_q_attempts

	set trivia_last_ts [clock seconds]

	global trivia_must_rehash
  if {$trivia_must_rehash != 2} {
		set trivia_timer [utimer $trivia_speed trivia_round]
	}
}
#>>>

# Make it harder for things to break questions (inject bold codes)
proc trivia_question_inject { question } {
#<<<
  putlog "trivia_question_inject $question"
	#inject random bold/underline/colour codes into question
	global trivia_c

	set l [string length $question]
	putlog "length: $l"
	if {$l < 1} {
	  return $question
	}
	set pos [rand $l]
	set first [string range $question 0 $pos]
	incr pos
	set second [string range $question $pos end]
	switch [rand 1] {
		0 {
			putlog "question_inject: using bold at pos $pos"
			return $first$trivia_c(bold)$trivia_c(bold)$second
		}
		1 {
			putlog "question_inject: using purple at pos $pos"
			return $first$trivia_c(purple)$trivia_c(off)$second
		}
	}
	return $question
}
#>>>

# Make it harder for things to break questions (inject line breaks)
proc trivia_question_split { question } {
#<<<
  putlog "trivia_question_split $question"
	#explodes a question into two lines at word boundaries, if it's long enough
	#don't split unscrambles incorrectly
	if [regexp -nocase "(unscramble .+:) (\[A-Z \]+)" $question matches first second] {
		return [list $first $second]
	}
	set words [split $question " "]
	set wordcount [llength $words]
	if {$wordcount < 4} {
	  putlog "aborting, too short"
		return [list $question]
	}

	#enough words to split
	#we want at least two on the first line
	putlog "wordcount: $wordcount"
	incr wordcount -2
	if {$wordcount < 0} {
		return [list $question]
	}
	set pos [rand $wordcount]
	incr pos 2
	putlog "picked pos $pos"
	set wordlist [list]
	set i 0
	set line ""
	foreach word $words {
		#putlog "word = $word, i = $i"
		append line "$word "
		if {$i == $pos} {
			#putlog "splitting here, line = $line"
			lappend wordlist [string trim $line]
			set line ""
		}
		incr i
	}
	#putlog "done, appending $line to list"
	if {$line != ""} {
		lappend wordlist [string trim $line]
	}
	#putlog "split question list is: $wordlist"
	return $wordlist
}
#>>>

# Finish a round (without a winner)
proc trivia_end_round { } {
#<<<
	global trivia_q_id trivia_q_cat trivia_q_question trivia_q_answer trivia_q_hint trivia_q_attempts trivia_channel trivia_status
	global trivia_timer trivia_delay trivia_db_handle trivia_unanswered
	global trivia_run_last trivia_run_nick trivia_run_qty trivia_c

	if {$trivia_status != 1} {
		#we're switched off, abort
		return 0
	}

	set trivia_q_answer [string toupper $trivia_q_answer]
	putquick "PRIVMSG $trivia_channel :Time's up! Nobody got it right. The answer was$trivia_c(purple) $trivia_q_answer"
	set trivia_q_answer ""

	incr trivia_unanswered
	if {$trivia_run_qty > 2} {
		putserv "PRIVMSG $trivia_channel :So much for $trivia_run_nick's winning spree."
	}
	set trivia_run_last 0
	set trivia_run_qty 0
	set trivia_run_nick ""

	if {[rand 100] > 90} {
		putserv "PRIVMSG $trivia_channel :Remember, to report a problem with a question or answer, type $trivia_c(purple)!trivia report <description of problem>"
	}

	if {$trivia_unanswered > 3} {
		putserv "PRIVMSG $trivia_channel :Three unanswered in a row, stopping the game."
		set trivia_status 0
	} else {
		set trivia_timer [utimer $trivia_delay trivia_start_round]
		trivia_check_rehash
	}
}
#>>>

# Skip the rest of this question
proc trivia_skip { nick } {
#<<<
	global trivia_q_id trivia_q_cat trivia_q_question trivia_q_answer trivia_q_hint trivia_q_attempts trivia_channel trivia_status
	global trivia_timer trivia_delay trivia_db_handle trivia_unanswered

	if {$trivia_status != 1} {
		#we're switched off, abort
		return 0
	}

	if {$trivia_q_answer == ""} {
		#no round in progress
		return 0
	}

	set trivia_q_question ""
	set trivia_q_answer ""

	trivia_killtimer

	putserv "PRIVMSG $trivia_channel :Skipping this question by $nick's request."
	set trivia_timer [utimer $trivia_delay trivia_start_round]
}
#>>>

# Utility function to fetch a random item from a list
proc trivia_random_element { l } {
#<<<
	return [lindex $l [rand [llength $l]]]
}
#>>>

# Start the game
proc trivia_start { } {
#<<<
	global trivia_status trivia_channel trivia_unanswered trivia_run_last trivia_run_qty trivia_c trivia_must_rehash trivia_db_handle

	if {$trivia_status == 1} {
		putserv "PRIVMSG $trivia_channel :Trivia is already running."
		return 0
	}

	if {$trivia_status == -1} {
		putserv "PRIVMSG $trivia_channel :Trivia is currently disabled."
		return 0
	}

	set alive [::mysql::ping $trivia_db_handle]
	if {$alive == false} {
		putlog "ERROR: mysql has gone away :("
		putquick "PRIVMSG $trivia_channel :Unable to start game; can't reach database :("
	}

	# go go go
	set trivia_status 1
	if {$trivia_must_rehash == 2 } {
		putquick "PRIVMSG $trivia_channel :$trivia_c(blue)### Resuming trivia game ###" -next
	} else {
		putquick  "PRIVMSG $trivia_channel :Trivia game started!" -next
	}

	#trivia_stats

	set trivia_unanswered 0
	set trivia_run_last 0
	set trivia_run_qty 0

	trivia_start_round
	return 0
}
#>>>

# Stop the game
proc trivia_stop { } {
#<<<
	global trivia_channel trivia_status

	if {$trivia_status == 1} {
		putserv "PRIVMSG $trivia_channel :Trivia game stopped."
		set trivia_status 0
		trivia_killtimer
	}
	return 0
}
#>>>

# Kill our timer
proc trivia_killtimer { } {
#<<<
	global trivia_timer

	if {$trivia_timer != ""} {
		killutimer $trivia_timer
	}
}
#>>>

# Utility function to explode line into letters
proc trivia_explode { line } {
#<<<
	set letters [split $line {}]
	set newline ""
	foreach letter $letters {
		append newline "$letter "
	}
	return [string trim $newline]
}
#>>>

# Get a UID's ranking
proc trivia_get_rank { uid } {
#<<<
	global trivia_db_handle

	putloglev 4 * "trivia_get_rank ($uid)"

	set sql "SELECT user_id FROM users ORDER by user_score DESC"
	set dt [trivia_get_period]
	set sql "select user_id, count(dt) as d from scores where dt > $dt group by user_id order by d desc"
	set result [mysqlsel $trivia_db_handle $sql -flatlist]

	set pos [lsearch -exact $result $uid]
	return [expr $pos + 1]
}
#>>>

# Get the top 10 users
proc trivia_get_top10 { } {
#<<<
	global trivia_db_handle

	set sql "SELECT user_name, user_score FROM users ORDER BY user_score DESC LIMIT 10"
	set dt [trivia_get_period]
	set sql "select users.user_name, count(dt) as d from scores left join users using (user_id) where dt > $dt group by scores.user_id order by d desc limit 10"

	set result [mysqlsel $trivia_db_handle $sql -list]
	set output ""
	set index 0

	foreach place $result {
		incr index
		append output "\002$index:\002 "
		append output [lindex $place 0]
		append output " ("
		append output [lindex $place 1]
		append output ")  "
	}

	set output "The top $index players are... $output"
	return $output
}
#>>>

# Fix a number into text
proc trivia_ordinal { number } {
#<<<
	if [regexp {1[0-9]$} $number] {
		return "th"
	}

	set last [string range $number end end]

	if {$last == "1"} {
		return "st"
	}

	if {$last == "2"} {
		return "nd"
	}

	if {$last == "3"} {
		return "rd"
	}

	return "th"
}
#>>>

# Get a score
proc trivia_score { n { nick "" } } {
#<<<
	set n [string trim $n]
	putloglev 4 * "trivia_score($n, $nick)"

	if {$n == ""} {
		set ni $nick
		set o "You are"
	} else {
		set ni $n
		set o "$n is"
	}

	set uid [trivia_get_uid $ni]
	set score [trivia_get_score $uid]
	set pos [trivia_get_rank $uid]
	if {$score == 0} {
		return "No score found for $n."
	}
	return "$o ranked $pos[trivia_ordinal $pos] with $score points."
}
#>>>

# Get the scores around a UID
proc trivia_near_five { uid } {
#<<<
	global trivia_db_handle trivia_c

	set sql "SELECT user_id, user_name, user_score FROM users ORDER BY user_score DESC"
	set dt [trivia_get_period]
	set sql "select users.user_id, users.user_name, count(dt) as user_score from scores left join users using (user_id) where dt > $dt group by scores.user_id order by user_score desc"

	set result [mysqlsel $trivia_db_handle $sql -flatlist]

	set pos [lsearch -exact $result $uid]

	#we use +- 6 here because it's a flat list, and we want 2 nodes either side
	putlog $result
	set near_five [lrange $result [expr $pos - 6] [expr $pos + 8]]

	putlog $near_five
	set low_pos [expr round(($pos-1) / 3)]
	if {$low_pos < 1} {
		set low_pos 1
	}
	putlog $low_pos
	set i 0
	set output ""
	while {$i < [llength $near_five]} {
		set user_id [lindex $near_five $i]
		incr i
		set nick [lindex $near_five $i]
		incr i
		set score [lindex $near_five $i]
		incr i

		if {$uid == $user_id} {
			append output "$trivia_c(purple)$trivia_c(bold)"
		}

		append output "$low_pos[trivia_ordinal $low_pos]:"
		append output "$nick"
		append output " ($score)  "

		if {$uid == $user_id} {
			append output "$trivia_c(off)$trivia_c(bold)"
		}

		incr low_pos
	}
	return $output
}
#>>>

# Turn a list into a stats list
proc trivia_list_to_stats { pos user_id l } {
#<<<
	putloglev 4 * "trivia_list_to_stats ($pos, $user_id, $l)"
	global trivia_c
	set uid [lindex $l 0]
	set nick [lindex $l 1]
	set score [lindex $l 2]
	incr pos

	set result ""
	if {$user_id == $uid} {
		set result "$trivia_c(purple)$trivia_c(bold)"
	}
	append result "$pos[trivia_ordinal $pos]: $nick ($score)  "
	if {$user_id == $uid} {
		append result "$trivia_c(off)$trivia_c(bold)"
	}
	return $result
}
#>>>

# Another function to get the nearest users to your score
proc trivia_near_five2 { uid } {
#<<<
	global trivia_db_handle trivia_c

	set sql "SELECT user_id, user_name, user_score FROM users ORDER BY user_score DESC"
	set dt [trivia_get_period]
  set sql "select users.user_id, users.user_name, count(dt) as user_score from scores left join users using (user_id) where dt > $dt group by scores.user_id order by user_score desc"

	set result [mysqlsel $trivia_db_handle $sql -list]

  putloglev d * "current score list: $result"

	set position 0
	foreach item $result {
		if {[lindex $item 0] == $uid} {
			putloglev d * "found at position $position"
			break
		}
		incr position
	}

	set line ""

	if {$position > 2} {
		append line [trivia_list_to_stats [expr $position - 2] $uid [lindex $result [expr $position - 2]]]
	}

	if {$position > 1} {
		append line [trivia_list_to_stats [expr $position - 1] $uid [lindex $result [expr $position - 1]]]
	}

	append line [trivia_list_to_stats $position $uid [lindex $result $position]]

	if {$position < [expr [llength $result] - 1]} {
		append line [trivia_list_to_stats [expr $position + 1] $uid [lindex $result [expr $position + 1]]]
	}

	if {$position < [expr [llength $result] - 2]} {
		append line [trivia_list_to_stats [expr $position + 2] $uid [lindex $result [expr $position + 2]]]
	}

	return $line
}
#>>>

# Get some stats from the DB
proc trivia_stats { } {
#<<<
	global trivia_db_handle trivia_channel

	set sql "SELECT COUNT(*) AS total FROM questions LEFT JOIN categories USING (cat_id) WHERE categories.cat_enabled = 1;"
	set result [mysqlsel $trivia_db_handle $sql -flatlist]
	set stat_total_questions [lindex $result 0]

	set sql "SELECT COUNT(*) AS total FROM categories WHERE cat_enabled = 1"
	set result [mysqlsel $trivia_db_handle $sql -flatlist]
	set stat_total_cats [lindex $result 0]

	putserv "PRIVMSG $trivia_channel :Using\002 $stat_total_questions\002 questions in\002 $stat_total_cats\002 categories."
}
#>>>

# Merge two users
proc trivia_merge { nick param } {
#<<<
	global trivia_db_handle

	putloglev 4 * "trivia_merge ($nick, $param)"

	if [regexp {^([^ ]+) (.+)$} $param matches nick1 nick2] {
		set olduid [trivia_get_uid [mysqlescape $nick1]]
		set newuid [trivia_get_uid [mysqlescape $nick2]]

		if {$olduid == 0} {
			puthelp "PRIVMSG $nick :Can't find user '$nick1'"
			return 0
		}

		if {$newuid == 0} {
			puthelp "PRIVMSG $nick :Can't find user '$nick2'"
			return 0
		}

		puthelp "PRIVMSG $nick :Meging score for $nick1 into score for $nick2"
		set sql "UPDATE scores SET user_id=$newuid WHERE user_id=$olduid"
		mysqlexec $trivia_db_handle $sql

		set newscore [trivia_get_score $newuid]
		puthelp "PRIVMSG $nick :$nick2 now has $newscore points."

		set sql "DELETE FROM users WHERE user_id = $olduid"
		mysqlexec $trivia_db_handle $sql
		puthelp "PRIVMSG $nick :User $nick1 has been deleted."
		return 0
	} else {
		puthelp "PRIVMSG $nick :Use: !trivia merge <olduser> <newuser>"
		puthelp "PRIVMSG $nick :  olduser's score is merged with newuser's and olduser is deleted."
	}
}
#>>>

# Find people who can start the script
# TODO: is this still used?
proc trivia_find_starters { } {
#<<<
  global trivia_channel trivia_flag
	set nicks [chanlist #triviacow &$trivia_flag]

	if {[llength $nicks] > 0} {
		return "One of the following users may be able to help: $nicks"
	} else {
	  return "Sorry, noone who can start trivia is present."
	}
}
#>>>

# Report a broken question
proc trivia_report { nick msg } {
#<<<
	global trivia_channel trivia_db_handle trivia_last_qid trivia_c

	if {$trivia_last_qid == 0} {
		puthelp "PRIVMSG $trivia_channel :Sorry, unable to work out which question to report on :("
		return 0
	}

	set nick [mysqlescape $nick]
	set msg [mysqlescape $msg]

	set sql "INSERT INTO reports VALUES (null, UNIX_TIMESTAMP(), '$nick', '$trivia_last_qid', '$msg', 'N')"
	mysqlexec $trivia_db_handle $sql
	puthelp "PRIVMSG $trivia_channel :Added a report against question ID$trivia_c(purple) $trivia_last_qid$trivia_c(off) from $trivia_c(purple)$nick$trivia_c(off)."
	set trivia_last_qid 0
}
#>>>

### WATCHDOG STUFF <<<
# Watchdog timer to make sure we're not ruined
proc trivia_watchdog { } {
#<<<
	global trivia_last_ts trivia_watchdog_timer trivia_status trivia_channel

	putloglev d * "trivia watchdog: tick"

	if {$trivia_last_ts == 0} {
		#never asked a question
		set trivia_watchdog_timer [utimer 45 trivia_watchdog]
		return 0
	}

	set current_ts [clock seconds]
	set difference [expr $current_ts - $trivia_last_ts]

	if {$difference > 60} {
		if {$trivia_status == 1} {
			putlog "watchdog: trivia is broken"
			#putserv "PRIVMSG $trivia_channel :Oops, I think I'm broken. Attempting to recover..."
			#set trivia_status 0
			#trivia_start
			putlog "trivia watchdog: current: $current_ts, last: $trivia_last_ts, difference: $difference"
		}
	}

	set trivia_watchdog_timer [utimer 10 trivia_watchdog]
	return 0
}
#>>>

# Kill the watchdog timeer
proc trivia_killwatchdog { } {
#<<<
	global trivia_watchdog_timer

	if {$trivia_watchdog_timer != ""} {
		killutimer $trivia_watchdog_timer
	}
}
#>>>

trivia_killwatchdog
set trivia_watchdog_timer [utimer 45 trivia_watchdog]
#>>>

trivia_connect

putlog {TriviaEngine ENGAGED(*$£&($}

if {$trivia_must_rehash == 2} {
  putlog "Auto-restarting trivia..."
	trivia_start
	set trivia_must_rehash 0
}