Import some files from pbot-ng project and branding this project to hyperbot

issue_tracker_change_detector

@@ -0,0 +1,94 @@
+#! /bin/bash
+
+while true
+do
+    source common_codez
+
+    log_file=bug_sums
+
+    temp_file=$( mktemp )
+
+    temp_changes=$( mktemp )
+
+    changes="/tmp/un-provoked-message-store"
+
+    for url in $( curl --compressed "https://issues.hyperbola.info/bugs/issue?@pagesize=99999" 2> /dev/null | grep -E 'href="issue[[:digit:]]+' | cut -d '"' -f 2 )
+    do
+	tfile="$( mktemp )"
+
+	try_count=1
+
+	# Get the URL and make sure it's not empty.
+	until curl --compressed "https://issues.hyperbola.info/bugs/${url}" > "${tfile}" 2> /dev/null && (( $( wc -l "${tfile}" 2> /dev/null | cut -d ' ' -f 1 ) ))
+	do
+	    # The time we sleep doubles each time up to a maximum of 512
+	    # seconds, before restarting the entire script.
+	    sleep "${try_count}"
+
+	    if (( try_count < 512 ))
+	    then
+		try_count=$(( try_count * 2 ))
+	    else
+		continue 2
+	    fi
+	done
+
+	echo "${url} $( md5sum < ${tfile} | cut -d ' ' -f 1 )" >> "${temp_file}"
+
+	rm "${tfile}"
+    done
+
+    # Check that the log file is not empty as a sanity check. TODO record WHEN
+    # it last checked the bug tracker for changes so we can also check if it was
+    # too long ago.
+    if (( $( wc -l "${log_file}" 2> /dev/null | cut -d ' ' -f 1 ) ))
+    then
+	cat "${temp_file}" |
+	while read -r line
+	do
+	    bug_number="${line%% *}"
+            # If this bug is not in the log file then it must be new.
+	    if { ! grep "${bug_number}" "${log_file}" > /dev/null ; }
+	    then
+		tdir="$( mktemp -d )"
+		curl --compressed "https://issues.hyperbola.info/bugs/${bug_number}" 2> /dev/null | csplit -f "${tdir}/xx" - '%<title>%1'
+		bug_title=$( head -1 ${tdir}/xx* | replace_wierd_html_chars )
+		cat ${tdir}/xx* | csplit -f "${tdir}/gg" - '%<th class="required">Priority</th>%1'
+		priority=$( head -1 ${tdir}/gg* )
+		priority=${priority#*>}
+		priority=${priority%<*}
+		rm -r "${tdir}"
+		echo "${bug_number} created: https://issues.hyperbola.info/bugs/${bug_number} (${bug_title% - Hyperbola\'s issue tracker} [${priority}])" >> "${temp_changes}"
+	    # It is in the log file so now we check if the entire line is there,
+	    # because if it's not then the md5sum must have changed.
+	    elif { ! grep "${line}" "${log_file}" > /dev/null ; }
+	    then
+		tdir="$( mktemp -d )"
+		curl --compressed "https://issues.hyperbola.info/bugs/${bug_number}" 2> /dev/null | csplit -f "${tdir}/xx" - '%<title>%1'
+		bug_title=$( head -1 ${tdir}/xx* | replace_wierd_html_chars )
+		cat ${tdir}/xx* | csplit -f "${tdir}/gg" - '%<th class="required">Priority</th>%1'
+		priority=$( head -1 ${tdir}/gg* )
+		priority=${priority#*>}
+		priority=${priority%<*}
+		rm -r "${tdir}"
+		echo "${bug_number} changed: https://issues.hyperbola.info/bugs/${bug_number} (${bug_title% - Hyperbola\'s issue tracker} [${priority}])" >> "${temp_changes}"
+	    fi
+	done
+    fi
+
+    if (( $( wc -l "${temp_changes}" 2> /dev/null | cut -d ' ' -f 1 ) > 12 ))
+    then
+	echo "More than 12 changes have been detected on the bug tracker. Ignoring." >> "${changes}"
+    else
+	while read line
+	do
+	    echo "${line}" >> "${changes}"
+	done < "${temp_changes}"
+    fi
+
+    mv "${temp_file}" "${log_file}"
+
+    rm -f "${temp_changes}"
+
+    sleep 5m
+done