# shellcheck shell=bash
# Shared config + helpers for the fd-double-close REPRODUCTION harness.
# Regtest only. Meant to run INSIDE an unprivileged network namespace (see ns.sh),
# so every port is private to the namespace and nothing can reach a real network.
set +e

REPRO=${REPRO:-$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)}
SRCROOT=$(cd "$REPRO/../../.." && pwd)
BIN=${BIN:-$SRCROOT/src}                    # dir with dragonxd + dragonx-cli (build with -g -rdynamic for backtraces)
DRAGONXD=$BIN/dragonxd
CLI=$BIN/dragonx-cli
RUNS=${RUNS:-$HOME/fd-guard-runs}           # run output (block files, logs): keep it out of the repo
GOLDEN=${GOLDEN:?set GOLDEN to a regtest datadir with a grown wallet (it is only ever copied)}
ASMAP=${ASMAP:-$SRCROOT/asmap.dat}
SP=${SP:-$HOME/.zcash-params/sapling-spend.params}
OP=${OP:-$HOME/.zcash-params/sapling-output.params}
SHIM=${SHIM:-$REPRO/../shim/libfdguard.so}

RPCUSER=ab
RPCPASS=abpass
RPC_T=18901 ; P2P_T=18911
RPC_H1=18902; P2P_H1=18912
RPC_H2=18903; P2P_H2=18913
TORPORT=18950

clin() { local dd=$1 rp=$2; shift 2; "$CLI" -regtest -datadir="$dd" -rpcuser=$RPCUSER -rpcpassword=$RPCPASS -rpcport=$rp "$@"; }

write_conf() { printf 'rpcuser=%s\nrpcpassword=%s\nrpcport=%s\n' "$RPCUSER" "$RPCPASS" "$2" > "$1/DRAGONX.conf"; }

# prep_golden <dd> : copy of the golden wallet datadir (2041 notes, txindex=1, height 286)
prep_golden() {
  local dd=$1
  rm -rf "$dd"; cp -a "$GOLDEN" "$dd"
  cp -f "$ASMAP" "$dd/asmap.dat"; cp -f "$SP" "$dd/sapling-spend.params"; cp -f "$OP" "$dd/sapling-output.params"
  write_conf "$dd" "$RPC_T"
  : > "$dd/regtest/debug.log"; rm -f "$dd/regtest/db.log"
}

# prep_fresh <dd> <rpcport> : empty regtest datadir (helpers)
prep_fresh() {
  local dd=$1 rp=$2
  rm -rf "$dd"; mkdir -p "$dd"
  cp -f "$ASMAP" "$dd/asmap.dat"; cp -f "$SP" "$dd/sapling-spend.params"; cp -f "$OP" "$dd/sapling-output.params"
  write_conf "$dd" "$rp"
}

start_helper() {   # <dd> <p2p> <rpc> <logfile>
  local dd=$1 p2p=$2 rp=$3 lg=$4
  ( cd "$dd" && exec nice -n 10 "$DRAGONXD" -regtest -datadir="$dd" -testnode=1 -checkpoints=0 \
      -listen=1 -bind=127.0.0.1 -port=$p2p -connect=127.0.0.1:1 -addnode=127.0.0.1:$P2P_T \
      -dnsseed=0 -dns=0 -asmap="$dd/asmap.dat" -autoshield=0 \
      -rpcuser=$RPCUSER -rpcpassword=$RPCPASS -rpcport=$rp -listenonion=0 -maxinboundfromip=100 \
      -debug=net -debug=tls -daemon ) >> "$lg" 2>&1
}

waitrpc() {        # <dd> <rpc> [secs]
  local dd=$1 rp=$2 n=${3:-300} i
  for i in $(seq 1 "$n"); do clin "$dd" "$rp" getblockcount >/dev/null 2>&1 && return 0; sleep 1; done
  return 1
}

stop_daemon() {    # <dd> <rpc>   (helpers, started with -daemon)
  local dd=$1 rp=$2 pid i
  pid=$(cat "$dd/regtest/hushd.pid" 2>/dev/null)
  clin "$dd" "$rp" stop >/dev/null 2>&1
  for i in $(seq 1 90); do { [ -z "$pid" ] || ! kill -0 "$pid" 2>/dev/null; } && return 0; sleep 1; done
  [ -n "$pid" ] && kill -9 "$pid" 2>/dev/null
}

MARKERS=('libevent: Epoll' 'Socket close failed' 'Bad file descriptor' 'Operation not permitted' 'Illegal seek'
         'SSL_write' 'Unable to seek' 'socket select error' 'write failed for page' 'PANIC' 'error scanning DB'
         'terminate' 'Assertion' 'EXCEPTION')