<?php
/**
 * 完整度计算引擎（碎片处理方案 v1.0.27）
 * 公式：完整度 = 100 - (缺失核心字段数×20) - (缺失重要字段数×8) - (缺失补充字段数×2)，下限 0%
 * 阈值：persons/companies ≥65%，social_accounts ≥60%，media_commercial_attributes ≥55%
 * 说明：persons 的 phone/email 为虚拟字段（来自 social_accounts 关联记录）
 */
require_once __DIR__ . '/db.php';

/** 四表字段分层定义（key => 层级），threshold 为完整度阈值 */
const COMPLETENESS_LAYERS = [
    'persons' => [
        'core'          => ['full_name'],
        'important'     => ['work_location'],
        'supplementary' => ['gender', 'nationality', 'education', 'graduated_from', 'hometown', 'id_type', 'id_number'],
        'virtual'       => ['phone' => 'core', 'email' => 'important'], // 关联 social_accounts.platform
        'threshold'     => 65,
    ],
    'companies' => [
        'core'          => ['display_name', 'industry'],
        'important'     => ['address', 'business_role', 'country'],
        'supplementary' => ['name_zh', 'name_en', 'registration_number', 'legal_form', 'legal_representative',
                            'business_scope', 'established_date', 'registered_capital', 'industry_subdivision',
                            'latest_employee_count', 'latest_annual_revenue', 'is_listed', 'stock_code', 'website'],
        'virtual'       => [],
        'threshold'     => 65,
    ],
    'social_accounts' => [
        'core'          => ['platform', 'account_id'],
        'important'     => ['is_primary'],
        'supplementary' => ['profile_url', 'remark'],
        'virtual'       => [],
        'threshold'     => 60,
    ],
    'media' => [
        'core'          => ['social_account_id', 'account_level'],
        'important'     => ['follower_count', 'content_categories'],
        'supplementary' => ['certification_type', 'avg_read_count', 'special_requirements', 'media_remark'],
        'virtual'       => [],
        'threshold'     => 55,
    ],
];

/** 字段中文名（前端展示缺失字段用） */
const COMPLETENESS_LABELS = [
    'full_name' => '姓名', 'phone' => '手机', 'email' => '邮箱', 'work_location' => '工作所在地',
    'gender' => '性别', 'nationality' => '国籍', 'education' => '学历', 'graduated_from' => '毕业院校',
    'hometown' => '家乡', 'id_type' => '证件类型', 'id_number' => '证件号码',
    'display_name' => '名称', 'industry' => '行业', 'address' => '地址', 'business_role' => '业务类型',
    'country' => '国家/地区', 'name_zh' => '中文名', 'name_en' => '英文名', 'registration_number' => '注册号',
    'legal_form' => '企业类型', 'legal_representative' => '法定代表人', 'business_scope' => '经营范围',
    'established_date' => '成立日期', 'registered_capital' => '注册资本', 'industry_subdivision' => '行业细分',
    'latest_employee_count' => '员工数', 'latest_annual_revenue' => '年营收', 'is_listed' => '是否上市',
    'stock_code' => '股票代码', 'website' => '官网',
    'platform' => '平台', 'account_id' => '账号', 'is_primary' => '常用', 'profile_url' => '主页链接', 'remark' => '备注',
    'social_account_id' => '关联账号', 'account_level' => '账号等级', 'follower_count' => '粉丝数',
    'content_categories' => '内容领域', 'certification_type' => '认证类型', 'avg_read_count' => '平均阅读',
    'special_requirements' => '特殊要求', 'media_remark' => '评估备注',
];

/** 字段是否缺失：null / 空串 / 纯空白 视为缺失（0 视为已填写） */
function completenessIsMissing($v)
{
    return ($v === null) || (trim((string)$v) === '');
}

/**
 * 根据分层定义计算完整度
 * @param string $table persons|companies|social_accounts|media
 * @param array  $row   该表记录（persons 需已注入虚拟字段 phone/email）
 * @return array { score:int, missing_core:[], missing_important:[], missing_supp:[], level:string }
 */
function completenessCalc($table, $row)
{
    $layers = COMPLETENESS_LAYERS[$table] ?? null;
    if (!$layers) {
        return ['score' => 100, 'missing_core' => [], 'missing_important' => [], 'missing_supp' => [], 'level' => 'complete'];
    }
    $missing = ['core' => [], 'important' => [], 'supplementary' => []];

    foreach (['core' => 'core', 'important' => 'important', 'supplementary' => 'supplementary'] as $layer => $bucket) {
        foreach ($layers[$layer] as $field) {
            if (completenessIsMissing($row[$field] ?? null)) {
                $missing[$bucket][] = $field;
            }
        }
    }
    // 虚拟字段（如人员 phone/email）按配置的层级计入
    foreach (($layers['virtual'] ?? []) as $field => $layer) {
        if (completenessIsMissing($row[$field] ?? null)) {
            $missing[$layer][] = $field;
        }
    }

    $score = 100
        - count($missing['core']) * 20
        - count($missing['important']) * 8
        - count($missing['supplementary']) * 2;
    $score = max(0, $score);

    $level = 'complete';
    if (!empty($missing['core'])) {
        $level = 'core'; // 缺核心（红）
    } elseif (!empty($missing['important'])) {
        $level = 'important'; // 缺重要（橙）
    } elseif (!empty($missing['supplementary'])) {
        $level = 'supplementary'; // 待补充（蓝）
    }

    return [
        'score'            => $score,
        'missing_core'     => $missing['core'],
        'missing_important' => $missing['important'],
        'missing_supp'     => $missing['supplementary'],
        'level'            => $level,
    ];
}

/** 人员记录：注入虚拟字段 phone/email（来自 social_accounts） */
function personWithVirtualFields(PDO $pdo, array $row)
{
    $stmt = $pdo->prepare(
        "SELECT platform, account_id FROM social_accounts
         WHERE owner_type = 'person' AND owner_id = ? AND is_active = 1 AND platform IN ('phone','email')
         ORDER BY is_primary DESC, id ASC"
    );
    $stmt->execute([$row['id']]);
    foreach ($stmt->fetchAll() as $acc) {
        if (!isset($row[$acc['platform']])) {
            $row[$acc['platform']] = $acc['account_id'];
        }
    }
    return $row;
}

/**
 * 计算某条记录的完整度信息
 * @param PDO    $pdo
 * @param string $table persons|companies|social_accounts|media
 * @param int    $id
 * @return array { row, score, missing_core, missing_important, missing_supp, level, threshold }
 */
function completenessInfo(PDO $pdo, $table, $id)
{
    $row = null;
    switch ($table) {
        case 'persons':
            $stmt = $pdo->prepare("SELECT * FROM persons WHERE id = ?");
            $stmt->execute([$id]);
            $row = $stmt->fetch();
            if ($row) {
                $row = personWithVirtualFields($pdo, $row);
            }
            break;
        case 'companies':
            $stmt = $pdo->prepare("SELECT * FROM companies WHERE id = ?");
            $stmt->execute([$id]);
            $row = $stmt->fetch();
            break;
        case 'social_accounts':
            $stmt = $pdo->prepare("SELECT * FROM social_accounts WHERE id = ?");
            $stmt->execute([$id]);
            $row = $stmt->fetch();
            break;
        case 'media':
            $stmt = $pdo->prepare("SELECT * FROM media_commercial_attributes WHERE social_account_id = ?");
            $stmt->execute([$id]);
            $row = $stmt->fetch();
            if ($row) {
                $row['id'] = $row['social_account_id'];
            }
            break;
    }
    if (!$row) {
        return null;
    }
    $calc = completenessCalc($table, $row);
    return [
        'row'              => $row,
        'score'            => $calc['score'],
        'missing_core'     => $calc['missing_core'],
        'missing_important' => $calc['missing_important'],
        'missing_supp'     => $calc['missing_supp'],
        'level'            => $calc['level'],
        'threshold'        => COMPLETENESS_LAYERS[$table]['threshold'] ?? 65,
        'is_complete'      => $calc['score'] >= (COMPLETENESS_LAYERS[$table]['threshold'] ?? 65),
    ];
}

/**
 * 更新某条记录的 is_incomplete 标记（完整度低于阈值 → 1）
 * @param PDO    $pdo
 * @param string $table persons|companies|social_accounts|media
 * @param int    $id
 * @return array|null completenessInfo 结果（记录不存在返回 null）
 */
function updateIncomplete(PDO $pdo, $table, $id)
{
    $info = completenessInfo($pdo, $table, $id);
    if (!$info) {
        return null;
    }
    $flag = $info['is_complete'] ? 0 : 1;
    switch ($table) {
        case 'persons':
            $pdo->prepare("UPDATE persons SET is_incomplete = ? WHERE id = ?")->execute([$flag, $id]);
            break;
        case 'companies':
            $pdo->prepare("UPDATE companies SET is_incomplete = ? WHERE id = ?")->execute([$flag, $id]);
            break;
        case 'social_accounts':
            $pdo->prepare("UPDATE social_accounts SET is_incomplete = ? WHERE id = ?")->execute([$flag, $id]);
            break;
        case 'media':
            $pdo->prepare("UPDATE media_commercial_attributes SET is_incomplete = ? WHERE social_account_id = ?")->execute([$flag, $id]);
            break;
    }
    return $info;
}

/** 更新某个归属方（人员/企业）全部 social_accounts 的 is_incomplete */
function updateAccountsIncomplete(PDO $pdo, $ownerType, $ownerId)
{
    $stmt = $pdo->prepare("SELECT id FROM social_accounts WHERE owner_type = ? AND owner_id = ?");
    $stmt->execute([$ownerType, $ownerId]);
    foreach ($stmt->fetchAll() as $acc) {
        updateIncomplete($pdo, 'social_accounts', (int)$acc['id']);
    }
}

/** 更新媒体账号（social_accounts + 其商业属性）的 is_incomplete */
function updateMediaIncomplete(PDO $pdo, $socialAccountId)
{
    updateIncomplete($pdo, 'social_accounts', $socialAccountId);
    updateIncomplete($pdo, 'media', $socialAccountId);
}