feat(life): add comments and replies to life posts
Introduce life_post_comments table for nested comment threads Add API endpoints to create, reply to, and delete comments Implement frontend UI with engagement counts and collapsible threads
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@@ -108,6 +108,38 @@ type LifePostPayload = {
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body: string;
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};
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type LifeCommentPayload = {
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body: string;
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};
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type LifeCommentRow = {
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id: number;
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postId: number;
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parentCommentId: number | null;
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body: string;
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deleted: boolean;
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createdAt: Date;
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updatedAt: Date;
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author: { id: number; displayName: string } | null;
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};
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type LifeComment = LifeCommentRow & {
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replies: LifeComment[];
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};
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type LifePostRow = {
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id: number;
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body: string;
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createdAt: Date;
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updatedAt: Date;
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author: { id: number; displayName: string } | null;
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updatedBy: { id: number; displayName: string } | null;
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};
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type LifePost = LifePostRow & {
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comments: LifeComment[];
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};
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type HabitatPayload = {
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name: string;
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translations: TranslationInput;
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@@ -1181,6 +1213,15 @@ function cleanLifePostPayload(payload: Record<string, unknown>): LifePostPayload
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return { body };
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}
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function cleanLifeCommentPayload(payload: Record<string, unknown>): LifeCommentPayload {
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const body = cleanName(payload.body, 'Please enter a comment');
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if (body.length > 1000) {
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throw validationError('Comment is too long');
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}
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return { body };
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}
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function lifePostProjection(): string {
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return `
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SELECT
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@@ -1202,21 +1243,115 @@ function lifePostProjection(): string {
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`;
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}
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export function listLifePosts() {
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return query(`
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function lifeCommentProjection(whereClause: string): string {
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return `
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SELECT
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lc.id,
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lc.post_id AS "postId",
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lc.parent_comment_id AS "parentCommentId",
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CASE WHEN lc.deleted_at IS NULL THEN lc.body ELSE '' END AS body,
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lc.deleted_at IS NOT NULL AS deleted,
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lc.created_at AS "createdAt",
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lc.updated_at AS "updatedAt",
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CASE
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WHEN lc.deleted_at IS NOT NULL OR comment_user.id IS NULL THEN NULL
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ELSE json_build_object('id', comment_user.id, 'displayName', comment_user.display_name)
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END AS author
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FROM life_post_comments lc
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LEFT JOIN users comment_user ON comment_user.id = lc.created_by_user_id
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${whereClause}
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`;
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}
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function buildLifeCommentTree(rows: LifeCommentRow[]): LifeComment[] {
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const comments = new Map<number, LifeComment>();
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const topLevelComments: LifeComment[] = [];
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for (const row of rows) {
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comments.set(row.id, { ...row, replies: [] });
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}
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for (const comment of comments.values()) {
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if (comment.parentCommentId === null) {
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topLevelComments.push(comment);
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continue;
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}
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const parent = comments.get(comment.parentCommentId);
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if (parent?.parentCommentId === null) {
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parent.replies.push(comment);
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} else {
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topLevelComments.push(comment);
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}
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}
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return topLevelComments;
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}
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async function lifeCommentsForPosts(postIds: number[]): Promise<Map<number, LifeComment[]>> {
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const commentsByPost = new Map<number, LifeComment[]>();
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if (postIds.length === 0) {
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return commentsByPost;
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}
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const rows = await query<LifeCommentRow>(
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`
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${lifeCommentProjection('WHERE lc.post_id = ANY($1::integer[])')}
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ORDER BY lc.created_at, lc.id
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`,
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[postIds]
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);
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for (const postId of postIds) {
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commentsByPost.set(postId, buildLifeCommentTree(rows.filter((comment) => comment.postId === postId)));
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}
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return commentsByPost;
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}
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async function getLifeCommentById(id: number): Promise<LifeComment | null> {
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const row = await queryOne<LifeCommentRow>(
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`
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${lifeCommentProjection('WHERE lc.id = $1')}
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`,
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[id]
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);
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return row ? { ...row, replies: [] } : null;
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}
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export async function listLifePosts(): Promise<LifePost[]> {
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const posts = await query<LifePostRow>(`
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${lifePostProjection()}
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ORDER BY lp.created_at DESC, lp.id DESC
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`);
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const commentsByPost = await lifeCommentsForPosts(posts.map((post) => post.id));
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return posts.map((post) => ({
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...post,
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comments: commentsByPost.get(post.id) ?? []
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}));
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}
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async function getLifePostById(id: number) {
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return queryOne(
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async function getLifePostById(id: number): Promise<LifePost | null> {
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const post = await queryOne<LifePostRow>(
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`
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${lifePostProjection()}
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WHERE lp.id = $1
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`,
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[id]
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);
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if (!post) {
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return null;
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}
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const commentsByPost = await lifeCommentsForPosts([post.id]);
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return {
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...post,
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comments: commentsByPost.get(post.id) ?? []
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};
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}
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export async function createLifePost(payload: Record<string, unknown>, userId: number) {
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@@ -1265,6 +1400,63 @@ export async function deleteLifePost(id: number, userId: number) {
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return Boolean(result);
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}
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export async function createLifeComment(postId: number, payload: Record<string, unknown>, userId: number) {
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const cleanPayload = cleanLifeCommentPayload(payload);
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const result = await queryOne<{ id: number }>(
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`
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INSERT INTO life_post_comments (post_id, body, created_by_user_id)
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SELECT $1, $2, $3
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WHERE EXISTS (SELECT 1 FROM life_posts WHERE id = $1)
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RETURNING id
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`,
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[postId, cleanPayload.body, userId]
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);
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return result ? getLifeCommentById(result.id) : null;
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}
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export async function createLifeCommentReply(
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postId: number,
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commentId: number,
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payload: Record<string, unknown>,
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userId: number
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) {
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const cleanPayload = cleanLifeCommentPayload(payload);
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const result = await queryOne<{ id: number }>(
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`
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INSERT INTO life_post_comments (post_id, parent_comment_id, body, created_by_user_id)
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SELECT lc.post_id, lc.id, $3, $4
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FROM life_post_comments lc
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WHERE lc.post_id = $1
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AND lc.id = $2
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AND lc.parent_comment_id IS NULL
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AND lc.deleted_at IS NULL
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RETURNING id
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`,
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[postId, commentId, cleanPayload.body, userId]
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);
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return result ? getLifeCommentById(result.id) : null;
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}
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export async function deleteLifeComment(id: number, userId: number) {
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const result = await queryOne<{ id: number }>(
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`
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UPDATE life_post_comments
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SET deleted_at = now(), deleted_by_user_id = $2, updated_at = now()
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WHERE id = $1
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AND created_by_user_id = $2
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AND deleted_at IS NULL
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RETURNING id
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`,
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[id, userId]
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);
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return Boolean(result);
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}
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export function isConfigType(type: string): type is ConfigType {
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return Object.hasOwn(configDefinitions, type);
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}
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