#!/usr/bin/env bash
# Regenerates every file in output/ except 10-jmh.txt (that one has its own script, about 4 minutes).
#   JAVA_HOME=/path/to/jdk-25 JEXTRACT=/path/to/jextract ./scripts/run-all.sh
set -uo pipefail
unset JAVA_TOOL_OPTIONS            # the JVM prints a "Picked up JAVA_TOOL_OPTIONS" banner in some sandboxes; it is noise in a transcript
HERE="$(cd "$(dirname "$0")/.." && pwd)"; cd "$HERE"
JAVA_HOME="${JAVA_HOME:?set JAVA_HOME to a JDK 25}"; export PATH="$JAVA_HOME/bin:$PATH"
JEXTRACT="${JEXTRACT:-$HERE/tools/jextract-25/bin/jextract}"
SQLITE_H="${SQLITE_H:-/usr/include/sqlite3.h}"
BUILD="${BUILD:-$HERE/build}"; OUT="$HERE/output"; mkdir -p "$OUT" "$BUILD/classes"
NA="--enable-native-access=ALL-UNNAMED"
run() { echo "\$ java $NA -cp build/classes demo.$1${2:+ $2}"; java $NA -cp "$BUILD/classes" demo."$1" ${2:-} 2>&1; }

# 01 - what was installed
{
  echo "\$ jextract --version";                 "$JEXTRACT" --version 2>&1
  echo "\$ java -version";                      java -version 2>&1
  echo "\$ gcc --version | head -1";            gcc --version | head -1
  echo "\$ dpkg-query -W libsqlite3-dev libsqlite3-0"; dpkg-query -W libsqlite3-dev libsqlite3-0
  echo "\$ grep -E '#define SQLITE_(VERSION|VERSION_NUMBER) ' $SQLITE_H"; grep -E '#define SQLITE_(VERSION|VERSION_NUMBER) ' "$SQLITE_H"
} > "$OUT/01-tools.txt"

# 02 - generate bindings: the trimmed set that is committed, and the whole header for size comparison
{
  echo "\$ scripts/gen.sh"
  JEXTRACT="$JEXTRACT" SQLITE_H="$SQLITE_H" scripts/gen.sh 2>&1
  echo "\$ find generated -name '*.java' | wc -l"; find generated -name '*.java' | wc -l
  echo "\$ wc -l \$(find generated -name '*.java') | sort -n"; wc -l $(find generated -name '*.java') | sort -n
  F="$(mktemp -d)"
  echo "\$ jextract --output <tmp> -t demo.sqlite.full -l sqlite3 $SQLITE_H     # no filters: the whole header"
  "$JEXTRACT" --output "$F" -t demo.sqlite.full -l sqlite3 "$SQLITE_H" > "$F.log" 2>&1
  echo "warnings: $(grep -c warning "$F.log")"; grep 'Skipping sqlite3 ' "$F.log"; grep 'Skipping sqlite3_stmt ' "$F.log"
  echo "files: $(find "$F" -name '*.java' | wc -l)"
  echo "lines: $(cat $(find "$F" -name '*.java') | wc -l)"
  echo "bytes: $(cat $(find "$F" -name '*.java') | wc -c)"
  echo "lines in the one big header class: $(wc -l < "$F/demo/sqlite/full/sqlite3_h.java")"
  rm -rf "$F" "$F.log"
  echo "\$ grep -o 'public static [A-Za-z.]* sqlite3_open[a-z_0-9\$]*(' generated/demo/sqlite/sqlite3_h.java | sort -u"
  grep -o 'public static [A-Za-z.]* sqlite3_open[a-z_0-9$]*(' generated/demo/sqlite/sqlite3_h.java | sort -u
} > "$OUT/02-generate.txt"

# compile generated + hand-written sources
rm -rf "$BUILD/classes"; mkdir -p "$BUILD/classes"
javac -d "$BUILD/classes" $(find generated src -name '*.java') || exit 1

{ run Hello; echo; echo "\$ java $NA -Djextract.trace.downcalls=true -cp build/classes demo.Hello"; java $NA -Djextract.trace.downcalls=true -cp "$BUILD/classes" demo.Hello 2>&1; } > "$OUT/03-hello.txt"

{
  echo "\$ java -cp build/classes demo.Hello          # no flag at all, JDK 25 default"
  java -cp "$BUILD/classes" demo.Hello 2>&1
  echo; echo "\$ java --illegal-native-access=deny -cp build/classes demo.Hello"
  java --illegal-native-access=deny -cp "$BUILD/classes" demo.Hello 2>&1 | head -6
} > "$OUT/04-native-access.txt"

run Tour > "$OUT/05-tour.txt"
run Arenas > "$OUT/06-arenas.txt"
{
  run Trap; echo
  echo "\$ java $NA -XX:ErrorFile=/tmp/jextract-hs_err.log -cp build/classes demo.NullText     # first lines of the crash banner"
  java $NA -XX:ErrorFile=/tmp/jextract-hs_err.log -cp "$BUILD/classes" demo.NullText 2>&1 | sed -n '1,9p'
  echo "exit code: ${PIPESTATUS[0]}"
} > "$OUT/07-pointer-traps.txt"
run Errors > "$OUT/08-errors.txt"
{ run Callbacks; echo; echo "\$ java $NA -cp build/classes demo.Callbacks explode"; java $NA -cp "$BUILD/classes" demo.Callbacks explode 2>&1; echo "exit code: $?"; } > "$OUT/09-callbacks.txt"
# 11 - how the -l option decides what gets loaded
{
  T="$(mktemp -d)"
  n=0
  for lib in sqlitez :libsqlite3.so.0; do
    n=$((n+1))
    echo "\$ jextract -t demo.sqlite -l $lib --include-function sqlite3_libversion --header-class-name sqlite3_h $SQLITE_H"
    "$JEXTRACT" --output "$T/gen$n" -t demo.sqlite -l "$lib" --include-function sqlite3_libversion --header-class-name sqlite3_h "$SQLITE_H" 2>&1
    grep -h 'libraryLookup' "$T/gen$n/demo/sqlite/sqlite3_h.java" | sed 's/^ *//'
    mkdir -p "$T/c$n"; javac -d "$T/c$n" "$T/gen$n"/demo/sqlite/*.java src/extra/V.java
    echo "\$ java $NA -cp <classes> V"
    java $NA -cp "$T/c$n" V 2>&1 | head -5
    echo
  done
  rm -rf "$T"
} > "$OUT/11-library-loading.txt"
echo done