import type { Kysely } from "kysely";
import { dropTables, entityTable, execDdl, oneOf } from "../src/migration-helpers.ts";

// W9-D 规则组:收录策略的过滤条件 + 偏好标签合一(docs/design/subscriptions.md §6)。
// rule_group = 结构化层(每层一个 AND/OR/NOT 表达式,第 k 层 pri = 100 - k)+ 硬排除;规则串只是它的文本表示。
// rule_atom = 自定义条件(对齐 MP 自定义规则 7 字段,不允许覆盖内置关键字)。
// 偏好标签原样迁成规则组(同 id、同指纹,legacy_kind/legacy_rule 保留旧语义),旧端点改为别名;抑制记录挂到规则组。
// 版本目标 rule_group_ids 有序引用规则组;default_order 非空 = 该类(订阅/洗版/搜索)默认链的一员。

// biome-ignore lint/suspicious/noExplicitAny: 迁移不依赖应用表类型
export async function up(db: Kysely<any>): Promise<void> {
  await execDdl(
    db,
    `
${entityTable(
  "rule_group",
  `
  name text not null check (length(name) between 1 and 80),
  description text,
  kind text not null default 'acquisition' ${oneOf("kind", ["acquisition", "upgrade", "search"])},
  scope jsonb not null default '{}'::jsonb,
  layers jsonb not null default '[]'::jsonb,
  hard_excludes jsonb not null default '[]'::jsonb,
  ladder_required boolean not null default true,
  rule_string text,
  source text not null default 'manual' ${oneOf("source", ["manual", "chat", "agent"])},
  enabled boolean not null default true,
  revision integer not null default 1 check (revision >= 1),
  fingerprint text not null,
  evidence jsonb not null default '{}'::jsonb,
  default_order integer,
  auto_fill boolean,
  legacy_kind text check (legacy_kind is null or legacy_kind in ('soft', 'hard', 'version', 'target')),
  legacy_rule jsonb,
  suppressed_at timestamptz,
  deleted_at timestamptz`,
)}
create index rule_group_live_idx on rule_group (kind, default_order) where deleted_at is null;
create index rule_group_fingerprint_idx on rule_group (fingerprint) where deleted_at is null;

${entityTable(
  "rule_atom",
  `
  key text not null unique check (key ~ '^([A-Z][A-Z0-9]*|[0-9]+[A-Z][A-Z0-9]*)$'),
  name text,
  description text,
  include jsonb not null default '[]'::jsonb,
  exclude jsonb not null default '[]'::jsonb,
  match_fields jsonb not null default '[]'::jsonb,
  unit_size_mb jsonb,
  min_seeders integer check (min_seeders is null or min_seeders >= 0),
  publish_delay_minutes jsonb,
  free boolean not null default false`,
)}

alter table acquisition_slot add column rule_group_ids jsonb not null default '[]'::jsonb check (jsonb_typeof(rule_group_ids) = 'array');
alter table preference_suppression add column rule_group_id uuid references rule_group (id) on delete set null;
create index preference_suppression_rule_group_idx on preference_suppression (rule_group_id) where rule_group_id is not null;

insert into rule_group (id, name, description, kind, scope, layers, hard_excludes, ladder_required, source, enabled,
                        revision, fingerprint, evidence, legacy_kind, legacy_rule, suppressed_at, deleted_at,
                        created_at, updated_at)
select id, label, description, 'acquisition', scope, '[]'::jsonb, '[]'::jsonb, kind <> 'soft',
       case origin when 'manual' then 'manual' when 'conversation' then 'chat' else 'agent' end,
       status = 'active', revision, fingerprint, evidence, kind, rule,
       case when status <> 'active' then updated_at end,
       case when status = 'deleted' then updated_at end,
       created_at, updated_at
  from preference_tag;
update preference_suppression set rule_group_id = preference_tag_id where preference_tag_id is not null;

insert into rule_group (name, description, kind, source, fingerprint, default_order) values
  ('订阅默认', '订阅没有指定规则组时使用', 'acquisition', 'manual', 'seed:acquisition', 0),
  ('洗版默认', '版本目标开启升级时额外叠加', 'upgrade', 'manual', 'seed:upgrade', 0),
  ('搜索默认', '手动搜索与 Agent 搜索资源时使用', 'search', 'manual', 'seed:search', 0);
`,
  );
}

// biome-ignore lint/suspicious/noExplicitAny: 同上
export async function down(db: Kysely<any>): Promise<void> {
  await execDdl(
    db,
    `
alter table preference_suppression drop column if exists rule_group_id;
alter table acquisition_slot drop column if exists rule_group_ids;
${dropTables(["rule_atom", "rule_group"])}
`,
  );
}