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	generate.sh: add initial solutions/spoiler page - chess-puzzles - chess puzzle …
	git clone git://git.codemadness.org/chess-puzzles
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	---
	commit 5df80ee4eebb2000bcac5530f58e6c84e9b92818
	parent 098952703cf713b7569ae0cb826a08a239e3b46a
	Author: Hiltjo Posthuma <[email protected]>
	Date: Mon, 18 Dec 2023 22:16:22 +0100

	generate.sh: add initial solutions/spoiler page

	Diffstat:
	M generate.sh \| 68 +++++++++++++++++++++++++++--…

	1 file changed, 60 insertions(+), 8 deletions(-)
	---
	diff --git a/generate.sh b/generate.sh
	@@ -1,7 +1,10 @@
	#!/bin/sh

	index="puzzles/index.html"
	-mkdir -p puzzles
	+rm -rf puzzles
	+mkdir -p puzzles/solutions
	+
	+solutions="$(mktemp)"

	cat > "$index" <<!
	<!DOCTYPE html>
	@@ -20,6 +23,9 @@ body {
	float: left;
	margin-right: 25px;
	}
	+footer {
	+ clear: both;
	+}
	</style>
	</head>
	<body>
	@@ -69,8 +75,10 @@ LC_ALL=C awk -F ',' '
	while read -r line; do
	i="$count"
	fen=$(printf '%s' "$line" \| cut -f 2 -d ',')
	+
	tomove=$(printf '%s' "$line" \| cut -f 2 -d ',' \| cut -f 2 -d ' ')
	- moves=$(printf '%s' "$line" \| cut -f 3 -d ',' \| cut -b 1-4 ) # first m…
	+ allmoves="$(printf '%s' "$line" \| cut -f 3 -d ',')"
	+ firstmove=$(printf '%s' "$line" \| cut -f 3 -d ',' \| cut -f 1 -d ' ' ) …
	rating=$(printf '%s' "$line" \| cut -f 4 -d ',')
	ratingdev=$(printf '%s' "$line" \| cut -f 5 -d ',')
	lichess=$(printf '%s' "$line" \| cut -f 9 -d ',')
	@@ -85,11 +93,11 @@ while read -r line; do
	desttxt="puzzles/$txt"
	destvt="puzzles/$vt"

	- ./fen_to_svg "$fen" "$moves" > "$destsvg"
	- ./fen_to_ascii "$fen" "$moves" > "$desttxt"
	- ./fen_to_tty "$fen" "$moves" > "$destvt"
	+ ./fen_to_svg "$fen" "$firstmove" > "$destsvg"
	+ ./fen_to_ascii "$fen" "$firstmove" > "$desttxt"
	+ ./fen_to_tty "$fen" "$firstmove" > "$destvt"

	- printf '<div class="puzzle">' >> "$index"
	+ printf '<div class="puzzle">\n' >> "$index"
	printf '<h2>Puzzle %s</h2>\n' "$i" >> "$index"
	test "$lichess" != "" && printf '<a href="%s">' "$lichess" >> "$index"

	@@ -109,7 +117,7 @@ while read -r line; do

	movetext=""
	# if there is a first move, inverse to move.
	- if test "moves" != ""; then
	+ if test "$firstmove" != ""; then
	case "$tomove" in
	"w") movetext=", black to move";;
	"b") movetext=", white to move";;
	@@ -125,16 +133,60 @@ while read -r line; do
	printf '%s%s\n' "$points" "$movetext" >> "$desttxt"
	printf '\n%s%s\n' "$points" "$movetext" >> "$destvt"

	+ # solutions per puzzle.
	+ printf '<div class="puzzle-solution">\n' >> "$solutions"
	+ printf '<h2>Puzzle %s</h2>\n' "$i" >> "$solutions"
	+
	+ m="${allmoves}"
	+ movecount=0
	+ # create a move list, removing one move each step, for generating
	+ # the solution images.
	+ while [ "$m" != "" ]; do
	+ prevmoves="$m"
	+
	+ echo "$m"
	+
	+ m="${m% }"
	+ m="${m%[a-h][0-9][a-h][0-9]}"
	+ m="${m%[qnb]}" # possible promotion
	+ m="${m% }"
	+
	+ test "$prevmoves" = "$m" && break # same, break also
	+ done \| sort \| while read -r movelist; do
	+ # first move is already shown, skip it.
	+ if test "$movecount" = "0"; then
	+ movecount=$((movecount + 1))
	+ continue
	+ fi
	+
	+ # process move list in sequence.
	+ destsolsvg="puzzles/solutions/${i}_${movecount}.svg"
	+ ./fen_to_svg "$fen" "$movelist" > "$destsolsvg"
	+
	+ printf '<img src="%s" width="180" height="180" loading="lazy" …
	+ "solutions/${i}_${movecount}.svg" >> "$solutions"
	+
	+ movecount=$((movecount + 1))
	+ done
	+ printf '</div>\n' >> "$solutions"
	+
	printf '</div>\n' >> "$index"

	# DEBUG
	- #echo "$count" >&2
	+ #echo "$count: $line" >&2

	count=$((count + 1))
	done

	+# solutions / spoilers
	+echo "<footer><br/><br/><details>\n<summary>Solutions</summary>\n" >> "$index"
	+cat "$solutions" >> "$index"
	+echo "</details>\n<br/><br/></footer>\n" >> "$index"
	+
	cat >> "$index" <<!
	</main>
	</body>
	</html>
	!
	+
	+rm -f "$solutions"