#!/usr/bin/env bash
set -euo pipefail

root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
work="$(mktemp -d)"
trap 'rm -rf "$work"' EXIT
trap 'echo "mutate: interrupted" >&2; exit 130' INT TERM

native() {
	if command -v cygpath >/dev/null 2>&1; then
		cygpath -m "$1"
	else
		printf '%s' "$1"
	fi
}

exclude_pattern() {
	local sep='[/\\]'
	local name="${1//./[.]}"
	printf '%s' "(^|${sep})${name}\$"
}

repo="$work/repo"
mkdir -p "$repo" "$repo/tmp" "$repo/.git" "$work/tmp" "$root/tmp"

tar -C "$root" -c \
	--exclude=./bin --exclude=./web --exclude=./node_modules --exclude=./.git \
	--exclude=./.task --exclude=./tmp --exclude=./data --exclude=./.claude \
	--exclude=./internal/infrastructure/assets/dist --exclude='*.exe' --exclude='*.db' . |
	tar -C "$repo" -x

export GOCACHE="$(native "$work/gocache")"
export TEMP="$(native "$work/tmp")"
export TMP="$TEMP"
export TMPDIR="$TEMP"
export GOFLAGS="-buildvcs=false${MUTATE_RUN:+ -run=$MUTATE_RUN}"

cd "$repo"
code=0
scopes=(
	./internal/infrastructure/useCases
	./api/middleware
	./api/pkg/claims
	./internal/domain/audit
	./internal/infrastructure/persistence/repositories
	./api/handlers/settings
)
if [ "$#" -gt 0 ]; then
	scopes=("$@")
fi
coverpkg=""
for scope in "${scopes[@]}"; do
	coverpkg="${coverpkg:+$coverpkg,}$scope/..."
done
parts=()
i=0
for scope in "${scopes[@]}"; do
	i=$((i + 1))
	part="$work/part$i.json"
	rc=0
	excludes=()
	if [ -n "${MUTATE_FILES:-}" ]; then
		keep=0
		for f in "$scope"/*.go; do
			base="$(basename "$f")"
			case "$base" in *_test.go) continue ;; esac
			case ",${MUTATE_FILES}," in
			*",$base,"*) keep=$((keep + 1)) ;;
			*) excludes+=(-E "$(exclude_pattern "$base")") ;;
			esac
		done
		if [ "$keep" -eq 0 ]; then continue; fi
	fi
	gremlins unleash --integration --tags nofrontend --workers "${MUTATE_WORKERS:-4}" 		--coverpkg="$coverpkg" 		--timeout-coefficient 10 ${excludes[@]+"${excludes[@]}"} --output "$(native "$part")" "$scope" || rc=$?
	if [ "$rc" -ge 128 ]; then exit "$rc"; fi
	if [ "$rc" -ne 0 ]; then code=$rc; fi
	if [ -f "$part" ]; then parts+=("$(native "$part")"); fi
done
python - "$(native "$root/tmp/gremlins.json")" "${parts[@]}" <<'PY'
import json, sys
out, parts = sys.argv[1], sys.argv[2:]
merged = None
for p in parts:
    d = json.load(open(p))
    if merged is None:
        merged = d
    else:
        merged["files"] = merged.get("files", []) + d.get("files", [])
if merged is None:
    merged = {"files": []}
json.dump(merged, open(out, "w"), indent=2)
PY
go clean -cache >/dev/null 2>&1 || true
exit "$code"