-- ============================================
-- 智能候选池查询SQL（智能分诊排队管理页面专用）
-- 页面：智能分诊排队管理 - 心内科
-- 用途：查询"已签到未入队"的患者（当日已挂号，但未加入队列）
-- ============================================

-- ============================================
-- 方案一：完整查询（包含所有字段，排除已在队列中的患者）
-- ============================================
SELECT 
    enc.id AS encounterId,
    enc.patient_id AS patientId,
    pt.name AS patientName,
    pt.birth_date AS birthDate,
    -- 计算年龄（前端会调用 parseAge 函数）
    CASE 
        WHEN pt.birth_date IS NOT NULL THEN
            EXTRACT(YEAR FROM AGE(pt.birth_date))::TEXT || '岁'
        ELSE ''
    END AS age,
    org.id AS organizationId,
    org.name AS organizationName,
    hcs.name AS healthcareName,
    pr.name AS practitionerName,
    enc.create_time AS registerTime,
    enc.status_enum AS statusEnum,
    -- 其他字段（如果需要）
    pt.phone,
    pt.gender_enum AS genderEnum,
    pt.id_card AS idCard
FROM adm_encounter enc
-- 关联患者表
INNER JOIN adm_patient pt 
    ON enc.patient_id = pt.id 
    AND pt.delete_flag = '0'
-- 关联科室表
LEFT JOIN adm_organization org 
    ON enc.organization_id = org.id 
    AND org.delete_flag = '0'
-- 关联医疗服务类型表（号别）
LEFT JOIN adm_healthcare_service hcs 
    ON enc.service_type_id = hcs.id 
    AND hcs.delete_flag = '0'
-- 关联就诊参与者表（医生信息）
LEFT JOIN (
    SELECT encounter_id, practitioner_id,
           ROW_NUMBER() OVER (PARTITION BY encounter_id ORDER BY create_time ASC) AS rn
    FROM adm_encounter_participant
    WHERE delete_flag = '0'
      AND (
          -- 如果就诊状态为"进行中"，查找"接诊医生"（admitter）
          (type_code = 'admitter' AND EXISTS(SELECT 1
                                             FROM adm_encounter AS e
                                             WHERE e.status_enum = 2  -- IN_PROGRESS
                                               AND e.id = encounter_id))
          OR
          -- 如果就诊状态不是"进行中"，查找"挂号医生"（registration_doctor）
          (type_code = 'registration_doctor' AND NOT EXISTS(SELECT 1
                                                            FROM adm_encounter AS e
                                                            WHERE e.status_enum = 2  -- IN_PROGRESS
                                                              AND e.id = encounter_id))
      )
) ep ON enc.id = ep.encounter_id AND ep.rn = 1
-- 关联医生表
LEFT JOIN adm_practitioner pr 
    ON ep.practitioner_id = pr.id 
    AND pr.delete_flag = '0'
-- 关联收费项目表（挂号费）
INNER JOIN adm_charge_item ci 
    ON enc.id = ci.encounter_id 
    AND ci.delete_flag = '0'
    AND ci.context_enum = 1  -- REGISTER（挂号）
-- 关联支付对账表（已支付）
INNER JOIN fin_payment_reconciliation prc
    ON ci.id::TEXT = ANY(string_to_array(prc.charge_item_ids,','))
    AND prc.delete_flag = '0'
    AND prc.status_enum = 1  -- SUCCESS（支付成功）
-- 排除已在队列中的患者（关键：LEFT JOIN + WHERE IS NULL）
LEFT JOIN hisdev.triage_queue_item tqi
    ON enc.id = tqi.encounter_id
    AND tqi.delete_flag = '0'
    AND tqi.queue_date = CURRENT_DATE
    AND tqi.status != 'COMPLETED'  -- 排除已完成的状态
WHERE enc.delete_flag = '0'
  AND enc.class_enum = 1  -- 门诊（AMB）
  AND enc.create_time::DATE = CURRENT_DATE  -- 当日挂号（前端会过滤 registerTime）
  AND enc.status_enum != 6  -- 排除退号（statusEnum = -1 时）
  AND tqi.id IS NULL  -- 关键：只查询不在队列中的患者
ORDER BY enc.create_time DESC;

-- ============================================
-- 方案二：简化查询（仅核心字段，便于快速测试）
-- ============================================
SELECT 
    enc.id AS encounterId,
    enc.patient_id AS patientId,
    pt.name AS patientName,
    org.id AS organizationId,
    org.name AS organizationName,
    hcs.name AS healthcareName,
    pr.name AS practitionerName,
    enc.create_time AS registerTime
FROM adm_encounter enc
INNER JOIN adm_patient pt ON enc.patient_id = pt.id AND pt.delete_flag = '0'
LEFT JOIN adm_organization org ON enc.organization_id = org.id AND org.delete_flag = '0'
LEFT JOIN adm_healthcare_service hcs ON enc.service_type_id = hcs.id AND hcs.delete_flag = '0'
LEFT JOIN (
    SELECT encounter_id, practitioner_id,
           ROW_NUMBER() OVER (PARTITION BY encounter_id ORDER BY create_time ASC) AS rn
    FROM adm_encounter_participant
    WHERE delete_flag = '0' AND type_code IN ('admitter', 'registration_doctor')
) ep ON enc.id = ep.encounter_id AND ep.rn = 1
LEFT JOIN adm_practitioner pr ON ep.practitioner_id = pr.id AND pr.delete_flag = '0'
INNER JOIN adm_charge_item ci ON enc.id = ci.encounter_id AND ci.delete_flag = '0' AND ci.context_enum = 1
INNER JOIN fin_payment_reconciliation prc ON ci.id::TEXT = ANY(string_to_array(prc.charge_item_ids,','))
    AND prc.delete_flag = '0' AND prc.status_enum = 1
-- 排除已在队列中的患者
LEFT JOIN hisdev.triage_queue_item tqi
    ON enc.id = tqi.encounter_id
    AND tqi.delete_flag = '0'
    AND tqi.queue_date = CURRENT_DATE
    AND tqi.status != 'COMPLETED'
WHERE enc.delete_flag = '0'
  AND enc.class_enum = 1
  AND enc.create_time::DATE = CURRENT_DATE
  AND enc.status_enum != 6
  AND tqi.id IS NULL  -- 不在队列中
ORDER BY enc.create_time DESC;

-- ============================================
-- 方案三：分步查询（便于调试和理解）
-- ============================================

-- 步骤1：查询当日已挂号的患者（不排除队列）
SELECT 
    enc.id AS encounterId,
    pt.name AS patientName,
    org.name AS organizationName,
    enc.create_time AS registerTime
FROM adm_encounter enc
INNER JOIN adm_patient pt ON enc.patient_id = pt.id AND pt.delete_flag = '0'
LEFT JOIN adm_organization org ON enc.organization_id = org.id AND org.delete_flag = '0'
INNER JOIN adm_charge_item ci ON enc.id = ci.encounter_id AND ci.delete_flag = '0' AND ci.context_enum = 1
INNER JOIN fin_payment_reconciliation prc ON ci.id::TEXT = ANY(string_to_array(prc.charge_item_ids,','))
    AND prc.delete_flag = '0' AND prc.status_enum = 1
WHERE enc.delete_flag = '0'
  AND enc.class_enum = 1
  AND enc.create_time::DATE = CURRENT_DATE
  AND enc.status_enum != 6;

-- 步骤2：查询已在队列中的患者
SELECT DISTINCT encounter_id
FROM hisdev.triage_queue_item
WHERE delete_flag = '0'
  AND queue_date = CURRENT_DATE
  AND status != 'COMPLETED';

-- 步骤3：合并查询（使用 NOT EXISTS 或 NOT IN）
SELECT 
    enc.id AS encounterId,
    pt.name AS patientName,
    org.name AS organizationName,
    enc.create_time AS registerTime
FROM adm_encounter enc
INNER JOIN adm_patient pt ON enc.patient_id = pt.id AND pt.delete_flag = '0'
LEFT JOIN adm_organization org ON enc.organization_id = org.id AND org.delete_flag = '0'
INNER JOIN adm_charge_item ci ON enc.id = ci.encounter_id AND ci.delete_flag = '0' AND ci.context_enum = 1
INNER JOIN fin_payment_reconciliation prc ON ci.id::TEXT = ANY(string_to_array(prc.charge_item_ids,','))
    AND prc.delete_flag = '0' AND prc.status_enum = 1
WHERE enc.delete_flag = '0'
  AND enc.class_enum = 1
  AND enc.create_time::DATE = CURRENT_DATE
  AND enc.status_enum != 6
  -- 排除已在队列中的患者
  AND NOT EXISTS (
      SELECT 1
      FROM hisdev.triage_queue_item tqi
      WHERE tqi.encounter_id = enc.id
        AND tqi.delete_flag = '0'
        AND tqi.queue_date = CURRENT_DATE
        AND tqi.status != 'COMPLETED'
  )
ORDER BY enc.create_time DESC;

-- ============================================
-- 查询条件说明
-- ============================================
-- 1. 基础条件：
--    - enc.delete_flag = '0'  -- 未删除
--    - enc.class_enum = 1     -- 门诊（AMB）
--    - ci.context_enum = 1    -- 挂号（REGISTER）
--    - prc.status_enum = 1    -- 支付成功（SUCCESS）
--
-- 2. 日期过滤：
--    - enc.create_time::DATE = CURRENT_DATE  -- 当日挂号
--    注意：前端还会基于 registerTime 字段再次过滤今天的数据
--
-- 3. 状态过滤：
--    - enc.status_enum != 6  -- 排除退号（对应前端 statusEnum = -1）
--
-- 4. 队列去重：
--    - LEFT JOIN hisdev.triage_queue_item ... WHERE tqi.id IS NULL
--    或者
--    - NOT EXISTS (SELECT 1 FROM hisdev.triage_queue_item ...)
--    排除已在队列中且状态不是 COMPLETED 的患者
--
-- 5. 租户过滤（如果需要）：
--    - enc.tenant_id = ?  -- 当前登录用户的租户ID
--
-- 6. 模糊搜索（如果需要）：
--    - pt.name LIKE '%关键词%'  -- 患者姓名
--    - org.name LIKE '%关键词%'  -- 科室名称
--    - pr.name LIKE '%关键词%'  -- 医生姓名
--    - hcs.name LIKE '%关键词%'  -- 号别名称

-- ============================================
-- 调试查询（检查数据是否正确）
-- ============================================

-- 1. 检查当日已挂号患者总数
SELECT COUNT(*) AS total_registered
FROM adm_encounter enc
INNER JOIN adm_charge_item ci ON enc.id = ci.encounter_id AND ci.delete_flag = '0' AND ci.context_enum = 1
INNER JOIN fin_payment_reconciliation prc ON ci.id::TEXT = ANY(string_to_array(prc.charge_item_ids,','))
    AND prc.delete_flag = '0' AND prc.status_enum = 1
WHERE enc.delete_flag = '0'
  AND enc.class_enum = 1
  AND enc.create_time::DATE = CURRENT_DATE
  AND enc.status_enum != 6;

-- 2. 检查已在队列中的患者数量
SELECT COUNT(DISTINCT encounter_id) AS in_queue_count
FROM hisdev.triage_queue_item
WHERE delete_flag = '0'
  AND queue_date = CURRENT_DATE
  AND status != 'COMPLETED';

-- 3. 检查候选池应该显示的患者数量（已挂号 - 已在队列）
SELECT 
    (SELECT COUNT(*) 
     FROM adm_encounter enc
     INNER JOIN adm_charge_item ci ON enc.id = ci.encounter_id AND ci.delete_flag = '0' AND ci.context_enum = 1
     INNER JOIN fin_payment_reconciliation prc ON ci.id::TEXT = ANY(string_to_array(prc.charge_item_ids,','))
         AND prc.delete_flag = '0' AND prc.status_enum = 1
     WHERE enc.delete_flag = '0'
       AND enc.class_enum = 1
       AND enc.create_time::DATE = CURRENT_DATE
       AND enc.status_enum != 6) 
    - 
    (SELECT COUNT(DISTINCT encounter_id)
     FROM hisdev.triage_queue_item
     WHERE delete_flag = '0'
       AND queue_date = CURRENT_DATE
       AND status != 'COMPLETED')
    AS candidate_pool_count;

-- 4. 查看队列中的患者详情（用于对比）
SELECT 
    tqi.encounter_id,
    tqi.patient_name,
    tqi.status,
    tqi.queue_order
FROM hisdev.triage_queue_item tqi
WHERE tqi.delete_flag = '0'
  AND tqi.queue_date = CURRENT_DATE
  AND tqi.status != 'COMPLETED'
ORDER BY tqi.queue_order;