create post table and entity

packages/api/src/entity/post.ts

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+import {
+  Column,
+  Entity,
+  JoinColumn,
+  ManyToOne,
+  PrimaryGeneratedColumn,
+} from 'typeorm'
+import { User } from './user'
+
+@Entity({ name: 'post' })
+export class Post {
+  @PrimaryGeneratedColumn('uuid')
+  id!: string
+
+  @Column('uuid')
+  userId!: string
+
+  @ManyToOne(() => User)
+  @JoinColumn({ name: 'user_id' })
+  user!: User
+
+  @Column('uuid', { array: true })
+  libraryItemIds!: string[]
+
+  @Column('uuid', { array: true })
+  highlightIds!: string[]
+
+  @Column('text')
+  title!: string
+
+  @Column('text')
+  content!: string
+
+  @Column('text', { nullable: true })
+  thumbnail?: string
+
+  @Column('text', { nullable: true })
+  thought?: string
+
+  @Column('timestamptz')
+  createdAt!: Date
+
+  @Column('timestamptz')
+  updatedAt!: Date
+}

packages/db/migrations/0183.do.post.sql

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+-- Type: DO
+-- Name: post
+-- Description: Create a post table
+
+BEGIN;
+
+CREATE TABLE omnivore.post (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v1mc(),
+    user_id UUID NOT NULL REFERENCES omnivore.user(id) ON DELETE CASCADE,
+    library_item_ids UUID[],
+	highlight_ids UUID[],
+    title TEXT NOT NULL,
+	content TEXT NOT NULL, -- generated from template
+	thumbnail TEXT,
+	thought TEXT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX post_user_id_idx ON omnivore.post(user_id);
+
+ALTER TABLE omnivore.user_profile ALTER COLUMN private SET DEFAULT true;
+
+COMMIT;

packages/db/migrations/0183.undo.post.sql

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+-- Type: UNDO
+-- Name: post
+-- Description: Create a post table
+
+BEGIN;
+
+ALTER TABLE omnivore.user_profile ALTER COLUMN private SET DEFAULT false;
+
+DROP TABLE omnivore.post;
+
+COMMIT;