#!/usr/bin/env bash
# Convert all `export * from` violations in one package's feature barrels,
# then run biome --write to canonicalise import order.
#
# Usage: bash scripts/convert-package-barrels.sh <pkg-rel-path>
#   e.g. bash scripts/convert-package-barrels.sh packages/crypto/crypto-hash
#
# Skips:
#   - src/index.ts (package root, out of scope per change spec)
#   - *.select/index.ts (generated forwarders, allowed by §6a)

set -euo pipefail

PKG_DIR="${1:?usage: $0 <pkg-rel-path>}"
ROOT="$(cd "$(dirname "$0")/.." && pwd)"
ABS_PKG="${ROOT}/${PKG_DIR}"

if [ ! -d "${ABS_PKG}/src" ]; then
    echo "no src/ in ${ABS_PKG}" >&2
    exit 1
fi

# Pass 1: convert all leaf barrels.
mapfile -t FILES < <(
    grep -rln "^export \* from" "${ABS_PKG}/src" --include="*.ts" 2>/dev/null \
        | grep -v "/src/index\.ts$" \
        | grep -v "\.select/" \
        | sort -u
)

if [ "${#FILES[@]}" -eq 0 ]; then
    echo "no violations in ${PKG_DIR} — running biome anyway"
    cd "${ABS_PKG}"
    for i in 1 2 3; do
        bunx biome check --write --max-diagnostics 1000 src/ 2>&1 | tail -1
    done
    exit 0
fi

echo "Pass 1: ${#FILES[@]} barrels in ${PKG_DIR}"
bun "${ROOT}/scripts/convert-barrels.ts" "${FILES[@]}" || true

# Pass 2: handle intermediate barrels whose targets have just become explicit.
mapfile -t REMAINING < <(
    grep -rln "^export \* from" "${ABS_PKG}/src" --include="*.ts" 2>/dev/null \
        | grep -v "/src/index\.ts$" \
        | grep -v "\.select/" \
        | sort -u
)

if [ "${#REMAINING[@]}" -gt 0 ]; then
    echo "Pass 2: ${#REMAINING[@]} intermediate barrels"
    bun "${ROOT}/scripts/convert-barrels.ts" "${REMAINING[@]}" || true
fi

# Pass 3: third pass for deeply-nested barrel chains.
mapfile -t LEFT < <(
    grep -rln "^export \* from" "${ABS_PKG}/src" --include="*.ts" 2>/dev/null \
        | grep -v "/src/index\.ts$" \
        | grep -v "\.select/" \
        | sort -u
)

if [ "${#LEFT[@]}" -gt 0 ]; then
    echo "Pass 3: ${#LEFT[@]} barrels remain"
    bun "${ROOT}/scripts/convert-barrels.ts" "${LEFT[@]}" || true
fi

# Final check.
FINAL=$(grep -rln "^export \* from" "${ABS_PKG}/src" --include="*.ts" 2>/dev/null \
    | grep -v "/src/index\.ts$" \
    | grep -v "\.select/" \
    | wc -l)

if [ "${FINAL}" -gt 0 ]; then
    echo "WARNING: ${FINAL} barrels still have violations after 3 passes:"
    grep -rln "^export \* from" "${ABS_PKG}/src" --include="*.ts" 2>/dev/null \
        | grep -v "/src/index\.ts$" \
        | grep -v "\.select/"
fi

# Biome auto-fix — run unconditionally for 3 passes to handle layered
# auto-fixes (e.g. organize-imports surfacing format issues that surface
# further organize-imports).
cd "${ABS_PKG}"
for i in 1 2 3; do
    bunx biome check --write --max-diagnostics 1000 src/ 2>&1 | tail -1
done