#!/usr/bin/env bash
# check-api-paths.sh - Frontend API paths vs Backend routes consistency check
#
# Usage: bash scripts/check-api-paths.sh
# Returns: 0=pass, 1=mismatch found

set -uo pipefail
cd "$(git rev-parse --show-toplevel)"

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

FRONTEND_PATHS=$(mktemp)
BACKEND_ROUTES=$(mktemp)
trap 'rm -f "$FRONTEND_PATHS" "$BACKEND_ROUTES"' EXIT

echo "=========================================="
echo "  Frontend-Backend API Path Consistency"
echo "=========================================="

# Extract frontend API paths from client.get/post/put/delete calls
# Single-quoted paths
grep -rohE "'\/[^']+'" apps/web/src/api/ --include="*.ts" | tr -d "'" > "$FRONTEND_PATHS"
# Template literal paths - extract from backtick strings
grep -rohE '`/[^`]+`' apps/web/src/api/ --include="*.ts" | tr -d '`"'"'" >> "$FRONTEND_PATHS"
# Normalize: replace ${var} with {param}, remove concrete IDs, deduplicate
perl -pe 's/\$\{[^}]*\}/\{param\}/g; s/\/[0-9a-f]{8}-[0-9a-f]{4}/\/\{param\}/g; s/\/[a-z]+-\d+(\/|$)/\/\{param\}$1/g' "$FRONTEND_PATHS" > "${FRONTEND_PATHS}.tmp"
sort -u "${FRONTEND_PATHS}.tmp" > "$FRONTEND_PATHS"
rm -f "${FRONTEND_PATHS}.tmp"

# Extract backend Axum route paths from .route(), .get(), .post() etc
grep -rohE '"/[^"]*"' crates/ --include="*.rs" \
  | grep -E '^"/(health|ai|auth|config|workflow|message|plugin)' \
  | tr -d '"' \
  | sed 's/:[^\/]*/{param}/g' \
  | sed 's/{[^}]*}/{param}/g' \
  | sort -u > "$BACKEND_ROUTES"

FE_COUNT=$(wc -l < "$FRONTEND_PATHS")
BE_COUNT=$(wc -l < "$BACKEND_ROUTES")
echo ""
echo "Stats: Frontend ${FE_COUNT} paths | Backend ${BE_COUNT} routes"
echo ""

ERRORS=0
WARNINGS=0

# Check 1: Frontend paths that have no backend route
echo "--- Check 1: Frontend paths missing from backend ---"
while IFS= read -r fpath; do
  [ -z "$fpath" ] && continue
  clean_path="${fpath%/{param}}"
  found=false
  while IFS= read -r bpath; do
    [ -z "$bpath" ] && continue
    clean_bpath="${bpath%/{param}}"
    if [ "$fpath" = "$bpath" ] || [ "$clean_path" = "$clean_bpath" ]; then
      found=true
      break
    fi
    case "$fpath" in
      "$bpath"/*|"$clean_bpath"/*) found=true; break ;;
    esac
  done < "$BACKEND_ROUTES"
  if [ "$found" = false ]; then
    echo -e "  ${RED}MISSING${NC} Frontend '${fpath}' not found in backend routes"
    ERRORS=$((ERRORS + 1))
  fi
done < "$FRONTEND_PATHS"

if [ $ERRORS -eq 0 ]; then
  echo -e "  ${GREEN}OK${NC} All frontend paths have backend routes"
fi

echo ""

# Check 2: Backend route parameter format
echo "--- Check 2: Backend route param format ---"
bad_format=$(grep -E ':[a-z_]+[/"]' "$BACKEND_ROUTES" || true)
if [ -n "$bad_format" ]; then
  echo -e "  ${YELLOW}WARN${NC} Routes using old :param syntax:"
  echo "$bad_format" | while IFS= read -r line; do echo "    $line"; done
  WARNINGS=$((WARNINGS + 1))
else
  echo -e "  ${GREEN}OK${NC} All routes use {param} syntax"
fi

echo ""
echo "=========================================="
if [ $ERRORS -gt 0 ]; then
  echo -e "  ${RED}FAIL${NC} ${ERRORS} mismatches, ${WARNINGS} warnings"
  exit 1
else
  echo -e "  ${GREEN}PASS${NC} All paths consistent, ${WARNINGS} warnings"
  exit 0
fi