#!/usr/bin/env bash
# OMNL Fineract — Set client firstname/lastname to canonical operating-entity names.
# Usage: run from repo root; sources omnl-fineract/.env or .env.
#   DRY_RUN=1  print payloads only, do not PUT.
# Requires: curl, jq.

set -euo pipefail
REPO_ROOT="${REPO_ROOT:-$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)}"
DRY_RUN="${DRY_RUN:-0}"

# Canonical names: Client 1 = Head Office, Client 2–15 = operating entities (by account no 000000001–000000015)
declare -A CLIENT_NAMES=(
  [1]="OMNL Head Office (DBIS) – Central Bank"
  [2]="Shamrayan Enterprises"
  [3]="HYBX"
  [4]="TAJ Private Single Family Office"
  [5]="Aseret Mortgage Bank"
  [6]="Mann Li Family Offices"
  [7]="Sovereign Order of Malta OSJ"
  [8]="Alltra Mainnet"
  [9]="FIDIS"
  [10]="Alpha Omega Holdings"
  [11]="SGI Capital"
  [12]="Titan Financial"
  [13]="Roy Walker PLLC"
  [14]="SGI Partners LLC"
  [15]="Tsunami Holdings AG"
)

if [ -f "${REPO_ROOT}/omnl-fineract/.env" ]; then
  set +u
  source "${REPO_ROOT}/omnl-fineract/.env" 2>/dev/null || true
  set -u
elif [ -f "${REPO_ROOT}/.env" ]; then
  set +u
  source "${REPO_ROOT}/.env" 2>/dev/null || true
  set -u
fi

BASE_URL="${OMNL_FINERACT_BASE_URL:-}"
TENANT="${OMNL_FINERACT_TENANT:-omnl}"
USER="${OMNL_FINERACT_USER:-app.omnl}"
PASS="${OMNL_FINERACT_PASSWORD:-}"

if [ -z "$BASE_URL" ] || [ -z "$PASS" ]; then
  echo "Set OMNL_FINERACT_BASE_URL and OMNL_FINERACT_PASSWORD (e.g. in omnl-fineract/.env)" >&2
  exit 1
fi

CURL_OPTS=(-s -S -H "Fineract-Platform-TenantId: ${TENANT}" -H "Content-Type: application/json" -u "${USER}:${PASS}")

clients_json=$(curl "${CURL_OPTS[@]}" "${BASE_URL}/clients")
if ! echo "$clients_json" | jq -e '.pageItems // .' >/dev/null 2>&1; then
  echo "Unexpected clients response (no pageItems or array)." >&2
  echo "$clients_json" | head -c 500
  exit 1
fi

# Normalize: Fineract may return { pageItems: [...] } or direct array
if echo "$clients_json" | jq -e '.pageItems' >/dev/null 2>&1; then
  items=$(echo "$clients_json" | jq -c '.pageItems[]')
else
  items=$(echo "$clients_json" | jq -c '.[]')
fi

updated=0
skipped=0
while IFS= read -r row; do
  [ -z "$row" ] && continue
  id=$(echo "$row" | jq -r '.id')
  account_no=$(echo "$row" | jq -r '.accountNo // ""')
  ext_id=$(echo "$row" | jq -r '.externalId // ""')
  first=$(echo "$row" | jq -r '.firstname // ""')
  last=$(echo "$row" | jq -r '.lastname // ""')
  display=$(echo "$row" | jq -r '.displayName // ""')

  # Resolve client number from accountNo (000000001 -> 1, etc.)
  client_num=""
  if [ -n "$account_no" ]; then
    client_num=$(echo "$account_no" | sed 's/^0*//')
    [ -z "$client_num" ] && client_num="0"
  fi
  display_name="${CLIENT_NAMES[$client_num]:-}"

  # Skip if no canonical name for this client number
  if [ -z "$display_name" ]; then
    echo "Skip clientId=$id accountNo=$account_no (no canonical name for Client $client_num)" >&2
    ((skipped++)) || true
    continue
  fi

  # Idempotent: skip if already set to this exact name
  if [ -n "$display" ] && [ "$display" = "$display_name" ]; then
    echo "Skip clientId=$id (already set: $display)" >&2
    ((skipped++)) || true
    continue
  fi

  # Set full name in firstname; lastname must be non-blank (tenant validation)
  firstname="$display_name"
  lastname="."

  payload=$(jq -n --arg f "$firstname" --arg l "$lastname" '{ firstname: $f, lastname: $l }')
  echo "Client id=$id accountNo=$account_no (Client $client_num) -> $display_name" >&2

  if [ "$DRY_RUN" = "1" ]; then
    echo "  [DRY RUN] PUT ${BASE_URL}/clients/${id} $payload" >&2
    ((updated++)) || true
    continue
  fi

  res=$(curl "${CURL_OPTS[@]}" -X PUT -d "$payload" "${BASE_URL}/clients/${id}" 2>/dev/null) || true
  if echo "$res" | jq -e '.resourceId // .clientId' >/dev/null 2>&1; then
    echo "  Updated clientId=$id" >&2
    ((updated++)) || true
  else
    echo "  Failed clientId=$id: $res" >&2
  fi
done <<< "$items"

echo "Done: $updated updated, $skipped skipped (already had name)." >&2