<?php
// =============================================
// GOI Dashboard API - Order List (Full Version)
// GET /api/orders.php
//
// Parameters:
//   date_from  YYYYMMDD  (default: today)
//   date_to    YYYYMMDD  (default: today)
//   driver     d_drinitial e.g. M.K  (optional)
//
// Header:
//   X-API-Key: GOI_DASHBOARD_2026_SECRET
//
// Returns per driver per day:
//   - Forecast / Actual / Achievement%
//   - Total stops / Completed stops
//   - Departure / Arrival time
//   - Mileage start / finish
//   - Opening Balance / Cash In / Cash Out
//   - Cash Return / Gas / Extra / Total Balance
//   - Driver comment
// =============================================

require_once 'config.php';
validateApiKey();

$pdo = getDB();

// 날짜 파라미터 (DB 형식: YYYYMMDD varchar)
$dateFrom = $_GET['date_from'] ?? date('Ymd');
$dateTo   = $_GET['date_to']   ?? date('Ymd');
$driver   = $_GET['driver']    ?? null;

// 날짜 형식 검증 (8자리 숫자)
if (!preg_match('/^\d{8}$/', $dateFrom) || !preg_match('/^\d{8}$/', $dateTo)) {
    http_response_code(400);
    jsonResponse(['success' => false, 'error' => 'Invalid date format. Use YYYYMMDD (e.g. 20260521)']);
}

// =============================================
// 메인 쿼리
// tbl_daily      → 수거 데이터 (Forecast, Actual, Stops)
// tbl_member     → 드라이버 조인 조건
// tbl_memberhis  → 출퇴근/Cash 데이터 (LEFT JOIN: 없어도 수거 데이터는 나옴)
// =============================================
$sql = "
    SELECT
        d.d_orderdate                                           AS order_date,
        d.d_druid                                               AS driver_uid,
        d.d_drinitial                                           AS driver,

        -- 수거 데이터
        COUNT(*)                                                AS total_stops,
        COUNT(CASE WHEN d.d_status = 'F' THEN 1 END)           AS completed_stops,
        COALESCE(SUM(d.d_estquantity), 0)                       AS forecast,
        COALESCE(SUM(d.d_quantity), 0)                          AS actual,

        -- 출퇴근 시간 (tbl_memberhis)
        h.h_departuretime                                       AS departure,
        h.h_arrivaltime                                         AS arrival,

        -- 마일리지 (tbl_memberhis)
        h.h_mileage_s                                           AS mileage_start,
        h.h_mileage_f                                           AS mileage_finish,

        -- Cash 데이터 (tbl_memberhis)
        COALESCE(h.h_balance_o, 0)                              AS opening_balance,
        COALESCE(h.h_balance_in, 0)                             AS cash_in,
        COALESCE(h.h_balance_out, 0)                            AS cash_out,
        COALESCE(h.h_balance_r, 0)                              AS cash_return,
        COALESCE(h.h_balance_g, 0)                              AS gas,
        COALESCE(h.h_balance_e, 0)                              AS extra,
        COALESCE(h.h_balance_t, 0)                              AS balance_total,

        -- 드라이버 코멘트
        h.h_comment                                             AS comment

    FROM tbl_daily d
    INNER JOIN tbl_member m
        ON (d.d_druid = m.m_currentdriver)
    LEFT JOIN tbl_memberhis h
        ON (d.d_druid = h.h_druid AND d.d_orderdate = h.h_date)
    WHERE d.d_orderdate BETWEEN :date_from AND :date_to
";

if ($driver) {
    $sql .= " AND d.d_drinitial = :driver ";
}

$sql .= "
    GROUP BY
        d.d_orderdate,
        d.d_drinitial,
        d.d_druid,
        h.h_departuretime,
        h.h_arrivaltime,
        h.h_mileage_s,
        h.h_mileage_f,
        h.h_balance_o,
        h.h_balance_in,
        h.h_balance_out,
        h.h_balance_r,
        h.h_balance_g,
        h.h_balance_e,
        h.h_balance_t,
        h.h_comment
    ORDER BY d.d_orderdate DESC, d.d_drinitial ASC
";

$stmt = $pdo->prepare($sql);
$stmt->bindParam(':date_from', $dateFrom);
$stmt->bindParam(':date_to',   $dateTo);
if ($driver) {
    $stmt->bindParam(':driver', $driver);
}
$stmt->execute();
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

// =============================================
// 계산 컬럼 추가
// =============================================
foreach ($rows as &$row) {

    // 날짜 포맷 변환 YYYYMMDD → YYYY-MM-DD
    $d = $row['order_date'];
    if (strlen($d) === 8) {
        $row['order_date_formatted'] = substr($d,0,4).'-'.substr($d,4,2).'-'.substr($d,6,2);
    }

    // 달성률 (%)
    $fc = floatval($row['forecast']);
    $ac = floatval($row['actual']);
    $row['achievement_pct'] = $fc > 0 ? round($ac / $fc * 100, 1) : 0;

    // 잔여 수거량
    $row['remaining'] = max($fc - $ac, 0);

    // 진행 상태
    if ($ac <= 0)       $row['status'] = 'Pending';
    elseif ($ac >= $fc) $row['status'] = 'Done';
    else                $row['status'] = 'In Progress';

    // 마일리지 주행거리
    $ms = intval($row['mileage_start']);
    $mf = intval($row['mileage_finish']);
    $row['mileage_driven'] = ($ms > 0 && $mf > 0) ? max($mf - $ms, 0) : null;
}
unset($row);

jsonResponse([
    'success'   => true,
    'date_from' => $dateFrom,
    'date_to'   => $dateTo,
    'count'     => count($rows),
    'data'      => $rows
]);