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

BASE_URL="${BASE_URL:-http://127.0.0.1:3000}"
DEVICE_FINGERPRINT="${DEVICE_FINGERPRINT:-regression-procurement}"
EMPLOYEE_IDENTIFIER="${EMPLOYEE_IDENTIFIER:-employee@hyinda.com}"
EMPLOYEE_PASSWORD="${EMPLOYEE_PASSWORD:-EmployeePassword1234}"
MANAGER_IDENTIFIER="${MANAGER_IDENTIFIER:-manager@hyinda.com}"
MANAGER_PASSWORD="${MANAGER_PASSWORD:-ManagerPassword1234}"
FINANCE_MGR_IDENTIFIER="${FINANCE_MGR_IDENTIFIER:-finance_mgr@hyinda.com}"
FINANCE_MGR_PASSWORD="${FINANCE_MGR_PASSWORD:-FinanceMgrPassword1234}"

if ! command -v curl >/dev/null 2>&1; then
  echo "[ERROR] curl not found" >&2
  exit 1
fi

if ! command -v jq >/dev/null 2>&1; then
  echo "[ERROR] jq not found" >&2
  exit 1
fi

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT_DIR"

# shellcheck source=scripts/lib/load-env-defaults.sh
source "$ROOT_DIR/scripts/lib/load-env-defaults.sh"
load_env_defaults ".env"

if [[ -z "${DATABASE_URL:-}" ]]; then
  echo "[ERROR] DATABASE_URL is required (export it or provide server/.env)" >&2
  exit 1
fi

TMP_DIR="$(mktemp -d)"
cleanup() {
  rm -rf "$TMP_DIR"
}
trap cleanup EXIT

assert_status() {
  local actual="$1"
  local expected="$2"
  local name="$3"
  local body_file="${4:-}"

  if [[ "$actual" != "$expected" ]]; then
    echo "[ERROR] $name expected HTTP $expected but got $actual" >&2
    [[ -n "$body_file" && -f "$body_file" ]] && cat "$body_file" >&2
    exit 1
  fi
}

assert_jq() {
  local file_path="$1"
  local jq_expr="$2"
  local name="$3"
  if ! jq -e "$jq_expr" "$file_path" >/dev/null; then
    echo "[ERROR] $name assertion failed: $jq_expr" >&2
    cat "$file_path" >&2
    exit 1
  fi
}

login_user() {
  local identifier="$1"
  local password="$2"
  local out_file="$3"

  local status
  status="$(curl -sS -o "$out_file" -w "%{http_code}" \
    -X POST "$BASE_URL/api/auth/login" \
    -H "content-type: application/json" \
    -H "x-device-fingerprint: $DEVICE_FINGERPRINT" \
    -d "{\"identifier\":\"$identifier\",\"password\":\"$password\"}")"
  assert_status "$status" "200" "login $identifier" "$out_file"
  jq -er '.data.accessToken' "$out_file"
}

api_json_auth() {
  local method="$1"
  local url="$2"
  local token="$3"
  local out_file="$4"
  local body="${5:-}"

  if [[ -n "$body" ]]; then
    curl -sS -o "$out_file" -w "%{http_code}" \
      -X "$method" "$url" \
      -H "authorization: Bearer $token" \
      -H "content-type: application/json" \
      -d "$body"
  else
    curl -sS -o "$out_file" -w "%{http_code}" \
      -X "$method" "$url" \
      -H "authorization: Bearer $token"
  fi
}

resolve_fixture_ids() {
  DATABASE_URL="$DATABASE_URL" node - <<'NODE'
const { createPrismaClient } = require('./src/prismaClient');
const { resolveApplicableBudgetPoolByContext } = require('./src/services/budgetPool');

(async () => {
  const { prisma, pool } = createPrismaClient();
  await prisma.$connect();
  try {
    const employee = await prisma.employee.findUnique({
      where: { email: process.env.SEED_EMPLOYEE_EMAIL ?? 'employee@hyinda.com' },
      select: { department_id: true, legal_entity_id: true },
    });
    const costCenter = await prisma.costCenter.findFirst({
      where: {
        enabled: true,
        archived_at: null,
        legal_entity_id: employee.legal_entity_id,
      },
      orderBy: { created_at: 'asc' },
      select: { id: true },
    });
    const supplier = await prisma.supplier.findFirst({
      where: {
        enabled: true,
        archived_at: null,
        OR: [{ legal_entity_id: employee.legal_entity_id }, { legal_entity_id: null }],
      },
      orderBy: { created_at: 'asc' },
      select: { id: true },
    });
    const documentCategory = await prisma.documentCategory.findFirst({
      where: {
        enabled: true,
        archived_at: null,
        entity_type: 'purchase_request',
      },
      orderBy: { created_at: 'asc' },
      select: { id: true },
    });
    const budgetPool = await resolveApplicableBudgetPoolByContext(prisma, {
      departmentId: employee.department_id,
      legalEntityId: employee.legal_entity_id,
      costCenterId: costCenter?.id ?? null,
      effectiveDate: new Date(),
    });

    process.stdout.write([
      employee.legal_entity_id,
      costCenter?.id ?? '',
      supplier?.id ?? '',
      documentCategory?.id ?? '',
      budgetPool?.id ?? '',
    ].join('\n'));
  } finally {
    await prisma.$disconnect();
    await pool.end();
  }
})().catch((error) => {
  console.error(error);
  process.exit(1);
});
NODE
}

assert_procurement_budget_state() {
  local approved_id="$1"
  local withdrawn_id="$2"
  local budget_pool_id="$3"

  DATABASE_URL="$DATABASE_URL" node - "$approved_id" "$withdrawn_id" "$budget_pool_id" <<'NODE'
const [approvedId, withdrawnId, budgetPoolId] = process.argv.slice(2);
const { createPrismaClient } = require('./src/prismaClient');

(async () => {
  const { prisma, pool } = createPrismaClient();
  await prisma.$connect();
  try {
    const approvedEntries = await prisma.budgetLedgerEntry.findMany({
      where: { entity_type: 'purchase_request', entity_id: approvedId },
      orderBy: { created_at: 'asc' },
      select: { kind: true, amount: true, budget_pool_id: true },
    });
    const withdrawnEntries = await prisma.budgetLedgerEntry.findMany({
      where: { entity_type: 'purchase_request', entity_id: withdrawnId },
      orderBy: { created_at: 'asc' },
      select: { kind: true, amount: true, budget_pool_id: true },
    });
    const archive = await prisma.purchaseOrderArchive.findUnique({
      where: { purchase_request_id: approvedId },
      select: { po_no: true, contract_no: true },
    });
    const poolState = budgetPoolId
      ? await prisma.budgetPool.findUnique({
          where: { id: budgetPoolId },
          select: { used_amount: true },
        })
      : null;

    if (approvedEntries.length !== 2 || approvedEntries[0]?.kind !== 'reserve' || approvedEntries[1]?.kind !== 'confirm') {
      console.error('[ERROR] approved purchase budget ledger mismatch', approvedEntries);
      process.exit(1);
    }

    if (withdrawnEntries.length !== 2 || withdrawnEntries[0]?.kind !== 'reserve' || withdrawnEntries[1]?.kind !== 'release') {
      console.error('[ERROR] withdrawn purchase budget ledger mismatch', withdrawnEntries);
      process.exit(1);
    }

    if (!archive || archive.po_no !== 'PO-P17B-001' || archive.contract_no !== 'CT-P17B-001') {
      console.error('[ERROR] purchase order archive mismatch', archive);
      process.exit(1);
    }

    if (poolState && Number(poolState.used_amount) < 0) {
      console.error('[ERROR] budget pool used_amount should not be negative', poolState);
      process.exit(1);
    }
  } finally {
    await prisma.$disconnect();
    await pool.end();
  }
})().catch((error) => {
  console.error(error);
  process.exit(1);
});
NODE
}

echo "[1/8] login baseline users"
EMPLOYEE_TOKEN="$(login_user "$EMPLOYEE_IDENTIFIER" "$EMPLOYEE_PASSWORD" "$TMP_DIR/employee-login.json")"
MANAGER_TOKEN="$(login_user "$MANAGER_IDENTIFIER" "$MANAGER_PASSWORD" "$TMP_DIR/manager-login.json")"
FINANCE_MGR_TOKEN="$(login_user "$FINANCE_MGR_IDENTIFIER" "$FINANCE_MGR_PASSWORD" "$TMP_DIR/finance-mgr-login.json")"

echo "[2/8] employee can read procurement reference master-data"
master_status="$(api_json_auth GET "$BASE_URL/api/master-data/legal-entities?enabled=true" "$EMPLOYEE_TOKEN" "$TMP_DIR/legal-entities.json")"
assert_status "$master_status" "200" "employee master-data read" "$TMP_DIR/legal-entities.json"
assert_jq "$TMP_DIR/legal-entities.json" '.data.items | length > 0' "employee master-data non-empty"

mapfile -t FIXTURE_IDS < <(resolve_fixture_ids)
LEGAL_ENTITY_ID="${FIXTURE_IDS[0]}"
COST_CENTER_ID="${FIXTURE_IDS[1]}"
SUPPLIER_ID="${FIXTURE_IDS[2]}"
DOCUMENT_CATEGORY_ID="${FIXTURE_IDS[3]}"
BUDGET_POOL_ID="${FIXTURE_IDS[4]}"

echo "[3/8] create + submit purchase request => reserve budget"
create_status="$(api_json_auth POST "$BASE_URL/api/purchase-requests" "$EMPLOYEE_TOKEN" "$TMP_DIR/create.json" '{}')"
assert_status "$create_status" "200" "create purchase request" "$TMP_DIR/create.json"
PURCHASE_ID_APPROVED="$(jq -er '.data.purchaseRequest.id' "$TMP_DIR/create.json")"
PATCH_BODY="$(jq -nc --arg le "$LEGAL_ENTITY_ID" --arg cc "$COST_CENTER_ID" --arg sp "$SUPPLIER_ID" --arg dc "$DOCUMENT_CATEGORY_ID" '{title:"procurement regression approved", legalEntityId:$le, costCenterId:$cc, supplierId:$sp, documentCategoryId:$dc, items:[{description:"Laptop", specification:"14 inch", quantity:"2.00", unitPrice:"100.00", isAssetCandidate:true}] }')"
patch_status="$(api_json_auth PATCH "$BASE_URL/api/purchase-requests/$PURCHASE_ID_APPROVED" "$EMPLOYEE_TOKEN" "$TMP_DIR/patch.json" "$PATCH_BODY")"
assert_status "$patch_status" "200" "patch purchase request" "$TMP_DIR/patch.json"
submit_status="$(api_json_auth POST "$BASE_URL/api/purchase-requests/$PURCHASE_ID_APPROVED/submit" "$EMPLOYEE_TOKEN" "$TMP_DIR/submit.json" '{}')"
assert_status "$submit_status" "200" "submit purchase request" "$TMP_DIR/submit.json"
assert_jq "$TMP_DIR/submit.json" '.data.status == "reviewing" and (.data.budgetReservation.applied == true)' "submit reserve budget"
TASK_ID="$(jq -er '.data.currentTaskId' "$TMP_DIR/submit.json")"

echo "[4/8] manager approve => confirm budget"
approve_status="$(api_json_auth POST "$BASE_URL/api/workflow/tasks/$TASK_ID/approve" "$MANAGER_TOKEN" "$TMP_DIR/approve.json" '{"comment":"approve procurement regression"}')"
assert_status "$approve_status" "200" "approve purchase request" "$TMP_DIR/approve.json"
assert_jq "$TMP_DIR/approve.json" '.data.outcome == "approved" and .data.purchaseRequestStatus == "approved"' "approve purchase request response"

echo "[5/8] only procurement.manage can archive PO/contract"
archive_forbidden_status="$(api_json_auth POST "$BASE_URL/api/purchase-requests/$PURCHASE_ID_APPROVED/archive-order" "$EMPLOYEE_TOKEN" "$TMP_DIR/archive-forbidden.json" '{"poNo":"PO-FAIL"}')"
assert_status "$archive_forbidden_status" "403" "archive order forbidden for employee" "$TMP_DIR/archive-forbidden.json"
archive_status="$(api_json_auth POST "$BASE_URL/api/purchase-requests/$PURCHASE_ID_APPROVED/archive-order" "$FINANCE_MGR_TOKEN" "$TMP_DIR/archive.json" '{"poNo":"PO-P17B-001","contractNo":"CT-P17B-001","archivedFiles":[]}')"
assert_status "$archive_status" "200" "archive order" "$TMP_DIR/archive.json"
assert_jq "$TMP_DIR/archive.json" '.data.archiveOrder.poNo == "PO-P17B-001" and .data.archiveOrder.contractNo == "CT-P17B-001"' "archive order response"

echo "[6/8] archive order readable by purchase participants"
archive_get_status="$(api_json_auth GET "$BASE_URL/api/purchase-requests/$PURCHASE_ID_APPROVED/archive-order" "$EMPLOYEE_TOKEN" "$TMP_DIR/archive-get.json")"
assert_status "$archive_get_status" "200" "get archive order" "$TMP_DIR/archive-get.json"
assert_jq "$TMP_DIR/archive-get.json" '.data.archiveOrder.poNo == "PO-P17B-001"' "get archive order response"

echo "[7/8] submit + withdraw purchase request => release budget"
create2_status="$(api_json_auth POST "$BASE_URL/api/purchase-requests" "$EMPLOYEE_TOKEN" "$TMP_DIR/create2.json" '{}')"
assert_status "$create2_status" "200" "create purchase request 2" "$TMP_DIR/create2.json"
PURCHASE_ID_WITHDRAWN="$(jq -er '.data.purchaseRequest.id' "$TMP_DIR/create2.json")"
PATCH2_BODY="$(jq -nc --arg le "$LEGAL_ENTITY_ID" --arg cc "$COST_CENTER_ID" --arg sp "$SUPPLIER_ID" --arg dc "$DOCUMENT_CATEGORY_ID" '{title:"procurement regression withdrawn", legalEntityId:$le, costCenterId:$cc, supplierId:$sp, documentCategoryId:$dc, items:[{description:"Desk", specification:null, quantity:"1.00", unitPrice:"50.00", isAssetCandidate:false}] }')"
patch2_status="$(api_json_auth PATCH "$BASE_URL/api/purchase-requests/$PURCHASE_ID_WITHDRAWN" "$EMPLOYEE_TOKEN" "$TMP_DIR/patch2.json" "$PATCH2_BODY")"
assert_status "$patch2_status" "200" "patch purchase request 2" "$TMP_DIR/patch2.json"
submit2_status="$(api_json_auth POST "$BASE_URL/api/purchase-requests/$PURCHASE_ID_WITHDRAWN/submit" "$EMPLOYEE_TOKEN" "$TMP_DIR/submit2.json" '{}')"
assert_status "$submit2_status" "200" "submit purchase request 2" "$TMP_DIR/submit2.json"
withdraw_status="$(api_json_auth POST "$BASE_URL/api/purchase-requests/$PURCHASE_ID_WITHDRAWN/withdraw" "$EMPLOYEE_TOKEN" "$TMP_DIR/withdraw2.json" '{}')"
assert_status "$withdraw_status" "200" "withdraw purchase request" "$TMP_DIR/withdraw2.json"
assert_jq "$TMP_DIR/withdraw2.json" '.data.status == "draft" and (.data.budgetRelease.applied == true)' "withdraw release budget"

echo "[8/8] verify budget ledger + archive DB state"
assert_procurement_budget_state "$PURCHASE_ID_APPROVED" "$PURCHASE_ID_WITHDRAWN" "$BUDGET_POOL_ID"

echo "[OK] Procurement regression passed"
echo "- approved purchaseRequestId: $PURCHASE_ID_APPROVED"
echo "- withdrawn purchaseRequestId: $PURCHASE_ID_WITHDRAWN"