-- 客户拜访功能扩展：补齐台账/记录页所需的业务字段、更新时间与查询索引
-- 背景：db_init.sql 中 customer_visit 原为 9 字段的极简结构，
--       现按「客户拜访台帐」「客户拜访记录」两份 UI 稿完整落地。
-- 幂等：全部使用 IF NOT EXISTS，可重复执行。
BEGIN;

-- 1) 拜访属性
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS visit_type      SMALLINT     DEFAULT 1;   -- 拜访类型:1首访摸排 2方案沟通 3商务二访 4维保回访 5应急巡检
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS visit_mode      SMALLINT     DEFAULT 1;   -- 拜访方式:1现场拜访 2商务拜访 3电话沟通 4线上会议
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS priority        SMALLINT     DEFAULT 3;   -- 优先级:1特急P1 2加急P2 3常规P3
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS subject         VARCHAR(128);             -- 拜访主题/目的

-- 2) 计划与签到
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS plan_time       TIMESTAMPTZ;              -- 计划拜访开始时间
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS plan_end_time   TIMESTAMPTZ;              -- 计划拜访结束时间
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS checkin_time    TIMESTAMPTZ;              -- 到场签到时间
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS checkin_status  SMALLINT     DEFAULT 0;   -- 签到状态:0未签到 1已签到
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS checkin_lng     DECIMAL(10,6);            -- 签到经度
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS checkin_lat     DECIMAL(10,6);            -- 签到纬度

-- 3) 现场信息与意向
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS space_desc        VARCHAR(128);           -- 客户空间性质/场所描述
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS intent_level      SMALLINT;               -- 意向评级:1=A高意向 2=B中意向 3=C低意向
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS intent_desc       VARCHAR(64);            -- 现场意向说明
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS demands           VARCHAR(512);           -- 诉求痛点(逗号分隔)
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS companion         VARCHAR(128);           -- 陪同人员
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS reception_person  VARCHAR(64);            -- 客户接待人
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS reception_title   VARCHAR(64);            -- 接待人职务
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS reception_phone   VARCHAR(20);            -- 接待人联系方式
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS result_rating     VARCHAR(64);            -- 现场成果评级/结论

-- 4) 状态与后续跟进
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS status          SMALLINT     DEFAULT 0;   -- 状态:0待执行 1已完成待复核 2取证待技术复核 3已立项转勘察 4已归档 5已取消
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS next_visit_time DATE;                     -- 预计下次回访日期
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS next_action     VARCHAR(128);             -- 下一步行动目标

-- 5) 现场照片（对象存储 key 的 JSON 数组字符串）
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS photos          VARCHAR(1024);            -- 现场照片对象key(JSON数组字符串)

-- 6) 工程关联
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS survey_order_id BIGINT;                   -- 关联勘察单ID
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS project_no      VARCHAR(64);              -- 关联工程编号

-- 7) 更新时间（Sequelize 实体已开启 updated_at，缺列会导致写入失败）
ALTER TABLE customer_visit ADD COLUMN IF NOT EXISTS updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW();

-- 8) 字段注释
COMMENT ON COLUMN customer_visit.visit_type      IS '拜访类型:1首访摸排 2方案沟通 3商务二访 4维保回访 5应急巡检';
COMMENT ON COLUMN customer_visit.visit_mode      IS '拜访方式:1现场拜访 2商务拜访 3电话沟通 4线上会议';
COMMENT ON COLUMN customer_visit.priority        IS '优先级:1特急P1 2加急P2 3常规P3';
COMMENT ON COLUMN customer_visit.subject         IS '拜访主题/目的';
COMMENT ON COLUMN customer_visit.plan_time       IS '计划拜访开始时间';
COMMENT ON COLUMN customer_visit.plan_end_time   IS '计划拜访结束时间';
COMMENT ON COLUMN customer_visit.checkin_time    IS '到场签到时间';
COMMENT ON COLUMN customer_visit.checkin_status  IS '签到状态:0未签到 1已签到';
COMMENT ON COLUMN customer_visit.checkin_lng     IS '签到经度';
COMMENT ON COLUMN customer_visit.checkin_lat     IS '签到纬度';
COMMENT ON COLUMN customer_visit.space_desc      IS '客户空间性质/场所描述';
COMMENT ON COLUMN customer_visit.intent_level    IS '意向评级:1=A高意向 2=B中意向 3=C低意向';
COMMENT ON COLUMN customer_visit.intent_desc     IS '现场意向说明';
COMMENT ON COLUMN customer_visit.demands         IS '诉求痛点(逗号分隔)';
COMMENT ON COLUMN customer_visit.companion       IS '陪同人员';
COMMENT ON COLUMN customer_visit.reception_person IS '客户接待人';
COMMENT ON COLUMN customer_visit.reception_title IS '接待人职务';
COMMENT ON COLUMN customer_visit.reception_phone IS '接待人联系方式';
COMMENT ON COLUMN customer_visit.result_rating   IS '现场成果评级/结论';
COMMENT ON COLUMN customer_visit.status          IS '状态:0待执行 1已完成待复核 2取证待技术复核 3已立项转勘察 4已归档 5已取消';
COMMENT ON COLUMN customer_visit.next_visit_time IS '预计下次回访日期';
COMMENT ON COLUMN customer_visit.next_action     IS '下一步行动目标';
COMMENT ON COLUMN customer_visit.photos          IS '现场照片对象key(JSON数组字符串)';
COMMENT ON COLUMN customer_visit.survey_order_id IS '关联勘察单ID';
COMMENT ON COLUMN customer_visit.project_no      IS '关联工程编号';
COMMENT ON COLUMN customer_visit.updated_at      IS '更新时间';

-- 9) 查询索引（台账按状态、计划时间过滤与排序）
CREATE INDEX IF NOT EXISTS idx_visit_status    ON customer_visit (status);
CREATE INDEX IF NOT EXISTS idx_visit_plan_time ON customer_visit (plan_time);

-- 10) 更新时间触发器（与 customer 等表保持一致的库级约定）
DO $$
BEGIN
    IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'trg_customer_visit_updated_at') THEN
        CREATE TRIGGER trg_customer_visit_updated_at BEFORE UPDATE ON customer_visit
            FOR EACH ROW EXECUTE FUNCTION trigger_set_updated_at();
    END IF;
END $$;

COMMIT;