2021-04-12 18:05:09 +00:00
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import { UserInputError, AuthenticationError } from 'apollo-server-micro'
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2021-04-14 00:57:32 +00:00
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const createItem = async (parent, { title, text, url, parentId }, { me, models }) => {
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if (!me) {
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throw new AuthenticationError('You must be logged in')
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}
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const data = {
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title,
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url,
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text,
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user: {
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connect: {
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name: me.name
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}
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}
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}
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if (parentId) {
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data.parent = {
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connect: {
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id: parseInt(parentId)
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}
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}
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}
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2021-04-17 18:15:18 +00:00
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const item = await models.item.create({ data })
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item.comments = []
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return item
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}
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function nestComments (flat, parentId) {
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const result = []
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let added = 0
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for (let i = 0; i < flat.length;) {
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if (!flat[i].comments) flat[i].comments = []
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if (Number(flat[i].parentId) === Number(parentId)) {
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result.push(flat[i])
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added++
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i++
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} else if (result.length > 0) {
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const item = result[result.length - 1]
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const [nested, newAdded] = nestComments(flat.slice(i), item.id)
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if (newAdded === 0) {
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break
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}
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item.comments.push(...nested)
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i += newAdded
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added += newAdded
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} else {
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break
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}
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}
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return [result, added]
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2021-04-14 00:57:32 +00:00
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}
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2021-04-12 18:05:09 +00:00
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export default {
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Query: {
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items: async (parent, args, { models }) => {
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2021-04-14 23:56:29 +00:00
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return await models.$queryRaw(`
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2021-04-15 19:41:02 +00:00
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SELECT id, "created_at" as "createdAt", title, url, text,
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"userId", nlevel(path)-1 AS depth, ltree2text("path") AS "path"
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2021-04-14 23:56:29 +00:00
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FROM "Item"
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2021-04-15 19:41:02 +00:00
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WHERE "parentId" IS NULL`)
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2021-04-14 23:56:29 +00:00
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},
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item: async (parent, { id }, { models }) => {
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const res = await models.$queryRaw(`
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2021-04-15 19:41:02 +00:00
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SELECT id, "created_at" as "createdAt", title, url, text,
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"parentId", "userId", nlevel(path)-1 AS depth, ltree2text("path") AS "path"
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2021-04-14 23:56:29 +00:00
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FROM "Item"
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2021-04-15 19:41:02 +00:00
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WHERE id = ${id}`)
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2021-04-14 23:56:29 +00:00
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return res.length ? res[0] : null
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},
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2021-04-17 18:15:18 +00:00
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flatcomments: async (parent, { parentId }, { models }) => {
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2021-04-12 18:05:09 +00:00
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return await models.$queryRaw(`
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2021-04-15 19:41:02 +00:00
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SELECT id, "created_at" as "createdAt", text, "parentId",
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"userId", nlevel(path)-1 AS depth, ltree2text("path") AS "path"
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2021-04-12 18:05:09 +00:00
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FROM "Item"
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2021-04-15 19:41:02 +00:00
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WHERE path <@ (SELECT path FROM "Item" where id = ${parentId}) AND id != ${parentId}
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2021-04-12 18:05:09 +00:00
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ORDER BY "path"`)
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2021-04-15 19:41:02 +00:00
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},
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2021-04-17 18:15:18 +00:00
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comments: async (parent, { parentId }, { models }) => {
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const flat = await models.$queryRaw(`
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SELECT id, "created_at" as "createdAt", text, "parentId",
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"userId", nlevel(path)-1 AS depth, ltree2text("path") AS "path"
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FROM "Item"
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WHERE path <@ (SELECT path FROM "Item" where id = ${parentId}) AND id != ${parentId}
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ORDER BY "path"`)
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return nestComments(flat, parentId)[0]
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},
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2021-04-15 19:41:02 +00:00
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root: async (parent, { id }, { models }) => {
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const res = await models.$queryRaw(`
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SELECT id, title
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FROM "Item"
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WHERE id = (SELECT ltree2text(subltree(path, 0, 1))::integer FROM "Item" WHERE id = ${id})`)
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return res.length ? res[0] : null
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2021-04-12 18:05:09 +00:00
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}
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},
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Mutation: {
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2021-04-14 00:57:32 +00:00
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createLink: async (parent, { title, url }, { me, models }) => {
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if (!title) {
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throw new UserInputError('Link must have title', { argumentName: 'title' })
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2021-04-12 18:05:09 +00:00
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}
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2021-04-14 00:57:32 +00:00
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if (!url) {
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throw new UserInputError('Link must have url', { argumentName: 'url' })
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2021-04-12 18:05:09 +00:00
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}
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2021-04-14 00:57:32 +00:00
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return await createItem(parent, { title, url }, { me, models })
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},
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createDiscussion: async (parent, { title, text }, { me, models }) => {
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if (!title) {
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throw new UserInputError('Link must have title', { argumentName: 'title' })
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2021-04-12 18:05:09 +00:00
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}
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2021-04-14 00:57:32 +00:00
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return await createItem(parent, { title, text }, { me, models })
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},
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createComment: async (parent, { text, parentId }, { me, models }) => {
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if (!text) {
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throw new UserInputError('Comment must have text', { argumentName: 'text' })
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}
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if (!parentId) {
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2021-04-14 23:56:29 +00:00
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throw new UserInputError('Comment must have parent', { argumentName: 'text' })
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2021-04-12 18:05:09 +00:00
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}
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2021-04-14 00:57:32 +00:00
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return await createItem(parent, { text, parentId }, { me, models })
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2021-04-12 18:05:09 +00:00
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}
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},
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Item: {
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user: async (item, args, { models }) =>
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await models.user.findUnique({ where: { id: item.userId } }),
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2021-04-14 23:56:29 +00:00
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ncomments: async (item, args, { models }) => {
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const [{ count }] = await models.$queryRaw`
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SELECT count(*)
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FROM "Item"
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2021-04-15 19:41:02 +00:00
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WHERE path <@ text2ltree(${item.path}) AND id != ${item.id}`
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2021-04-14 23:56:29 +00:00
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return count
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},
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2021-04-14 00:57:32 +00:00
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sats: () => 0
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2021-04-12 18:05:09 +00:00
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}
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}
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