-- ============================================================
-- 餐食模块 数据库表结构
-- ============================================================

drop table if exists b_meal_plan_rating;
drop table if exists b_meal_dish_tag;
drop table if exists b_meal_dish_ingredient;
drop table if exists b_meal_dish_step;
drop table if exists b_meal_plan_log;
drop table if exists b_meal_plan_item;
drop table if exists b_meal_plan;
drop table if exists b_meal_dish;
drop table if exists b_meal_category;
drop table if exists b_meal_tag;
drop table if exists b_meal_slot;

-- ============================================================
-- 菜品
-- ============================================================
create table b_meal_dish (
  id bigint primary key,
  family_id bigint not null,
  name varchar(64) not null,
  image_file_key varchar(512) not null,
  category_id bigint,
  ingredient_summary varchar(512) default '',
  cooking_time_minutes int default 0,
  difficulty smallint default 0,
  remark varchar(512) default '',
  status smallint not null default 1,
  sort_number int not null default 0,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 菜品分类
-- ============================================================
create table b_meal_category (
  id bigint primary key,
  family_id bigint not null,
  name varchar(32) not null,
  sort_number int not null default 0,
  status smallint not null default 1,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 标签（父子结构）
-- parent_id 为空表示父标签，指向父标签表示子标签
-- ============================================================
create table b_meal_tag (
  id bigint primary key,
  family_id bigint not null,
  parent_id bigint,
  name varchar(32) not null,
  color varchar(7) default '',
  sort_number int not null default 0,
  status smallint not null default 1,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 菜品食材明细
-- ============================================================
create table b_meal_dish_ingredient (
  id bigint primary key,
  family_id bigint not null,
  dish_id bigint not null,
  name varchar(64) not null,
  quantity numeric(10, 2),
  unit varchar(16) default '',
  spec varchar(64) default '',
  remark varchar(128) default '',
  sort_number int not null default 0,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 菜品步骤
-- ============================================================
create table b_meal_dish_step (
  id bigint primary key,
  family_id bigint not null,
  dish_id bigint not null,
  step_number int not null,
  description varchar(1024) default '',
  image_file_key varchar(512) default '',
  sort_number int not null default 0,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 菜品标签关联
-- ============================================================
create table b_meal_dish_tag (
  id bigint primary key,
  family_id bigint not null,
  dish_id bigint not null,
  tag_id bigint not null,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 餐段
-- ============================================================
create table b_meal_slot (
  id bigint primary key,
  family_id bigint not null,
  name varchar(32) not null,
  sort_number int not null default 0,
  status smallint not null default 1,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 餐食安排
-- 同一个家庭、同一天、同一个餐段只有一条记录
-- status: 0=planning（进行中，可修改）, 1=completed（已完成，不可修改）
-- ============================================================
create table b_meal_plan (
  id bigint primary key,
  family_id bigint not null,
  plan_date date not null,
  meal_slot_id bigint not null,
  status smallint not null default 0,
  remark varchar(512) default '',
  cook_by bigint,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 餐食安排明细
-- ============================================================
create table b_meal_plan_item (
  id bigint primary key,
  family_id bigint not null,
  plan_id bigint not null,
  dish_id bigint not null,
  quantity int not null default 1,
  remark varchar(256) default '',
  sort_number int not null default 0,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 餐食活动日志
-- type: 1=安排餐食, 2=加菜, 3=移除菜, 4=备注, 5=设置做饭人
-- dish_name: 操作时的菜品名称快照，用于时间轴展示
-- ============================================================
create table b_meal_plan_log (
  id bigint primary key,
  family_id bigint not null,
  plan_id bigint not null,
  type smallint not null,
  content varchar(1024) default '',
  ref_id bigint,
  dish_name varchar(128) default null,
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 餐食安排评分
-- rating: 1-5 星
-- 同一家庭、同一安排、同一评分人只有一条记录（通过索引保证唯一）
-- ============================================================
create table b_meal_plan_rating (
  id bigint primary key,
  family_id bigint not null,
  plan_id bigint not null,
  rater_id bigint not null,
  rating smallint not null,
  content varchar(256) default '',
  create_time timestamptz,
  update_time timestamptz,
  create_by bigint,
  update_by bigint
);

-- ============================================================
-- 索引
-- ============================================================

-- 菜品：按家庭、状态、分类查询
create index idx_b_meal_dish_family_status_category
  on b_meal_dish (family_id, status, category_id, sort_number, id);

-- 菜品分类：按家庭、状态查询
create index idx_b_meal_category_family_status
  on b_meal_category (family_id, status, sort_number, id);

-- 标签：按家庭、状态、父标签查询
create index idx_b_meal_tag_family_status_parent
  on b_meal_tag (family_id, status, parent_id, sort_number, id);

-- 食材：按菜品查询
create index idx_b_meal_dish_ingredient_dish
  on b_meal_dish_ingredient (family_id, dish_id, sort_number, id);

-- 步骤：按菜品查询
create index idx_b_meal_dish_step_dish
  on b_meal_dish_step (family_id, dish_id, sort_number, step_number, id);

-- 菜品标签关联：按菜品和按标签查询
create index idx_b_meal_dish_tag_dish
  on b_meal_dish_tag (family_id, dish_id, tag_id);

create index idx_b_meal_dish_tag_tag
  on b_meal_dish_tag (family_id, tag_id, dish_id);

-- 餐段：按家庭、状态查询
create index idx_b_meal_slot_family_status
  on b_meal_slot (family_id, status, sort_number, id);

-- 餐食安排：按家庭、日期、餐段唯一查询
create index idx_b_meal_plan_family_date_slot
  on b_meal_plan (family_id, plan_date, meal_slot_id);

-- 餐食安排：按家庭、日期范围查询（历史查看）
create index idx_b_meal_plan_family_date
  on b_meal_plan (family_id, plan_date, id);

-- 餐食安排明细：按安排查询
create index idx_b_meal_plan_item_plan
  on b_meal_plan_item (family_id, plan_id, sort_number, id);

-- 餐食安排明细：按菜品反查
create index idx_b_meal_plan_item_dish
  on b_meal_plan_item (family_id, dish_id, plan_id);

-- 活动日志：按安排和时间轴查询
create index idx_b_meal_plan_log_plan
  on b_meal_plan_log (family_id, plan_id, create_time, id);

-- 活动日志：按安排和类型筛选
create index idx_b_meal_plan_log_plan_type
  on b_meal_plan_log (family_id, plan_id, type);

-- 评分：按安排查询
create index idx_b_meal_plan_rating_plan
  on b_meal_plan_rating (family_id, plan_id, id);

-- 评分：同一家庭、同一安排、同一评分人唯一
create unique index idx_b_meal_plan_rating_plan_rater
  on b_meal_plan_rating (family_id, plan_id, rater_id);