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const POST_GRAPHQL_FIELDS = `
slug
title
coverImage {
url
}
date
author {
name
picture {
url
}
}
excerpt
content {
json
links {
assets {
block {
sys {
id
}
url
description
}
}
}
}
`;
async function fetchGraphQL(query: string, preview = false): Promise<any> {
return fetch(
`https://graphql.contentful.com/content/v1/spaces/${process.env.CONTENTFUL_SPACE_ID}`,
{
method: "POST",
headers: {
"Content-Type": "application/json",
Authorization: `Bearer ${
preview
? process.env.CONTENTFUL_PREVIEW_ACCESS_TOKEN
: process.env.CONTENTFUL_ACCESS_TOKEN
}`,
},
body: JSON.stringify({ query }),
next: { tags: ["posts"] },
},
).then((response) => response.json());
}
function extractPost(fetchResponse: any): any {
return fetchResponse?.data?.postCollection?.items?.[0];
}
function extractPostEntries(fetchResponse: any): any[] {
return fetchResponse?.data?.postCollection?.items;
}
export async function getPreviewPostBySlug(slug: string | null): Promise<any> {
const entry = await fetchGraphQL(
`query {
postCollection(where: { slug: "${slug}" }, preview: true, limit: 1) {
items {
${POST_GRAPHQL_FIELDS}
}
}
}`,
true,
);
return extractPost(entry);
}
export async function getAllPosts(isDraftMode: boolean): Promise<any[]> {
const entries = await fetchGraphQL(
`query {
postCollection(where: { slug_exists: true }, order: date_DESC, preview: ${
isDraftMode ? "true" : "false"
}) {
items {
${POST_GRAPHQL_FIELDS}
}
}
}`,
isDraftMode,
);
return extractPostEntries(entries);
}
export async function getPostAndMorePosts(
slug: string,
preview: boolean,
): Promise<any> {
const entry = await fetchGraphQL(
`query {
postCollection(where: { slug: "${slug}" }, preview: ${
preview ? "true" : "false"
}, limit: 1) {
items {
${POST_GRAPHQL_FIELDS}
}
}
}`,
preview,
);
const entries = await fetchGraphQL(
`query {
postCollection(where: { slug_not_in: "${slug}" }, order: date_DESC, preview: ${
preview ? "true" : "false"
}, limit: 2) {
items {
${POST_GRAPHQL_FIELDS}
}
}
}`,
preview,
);
return {
post: extractPost(entry),
morePosts: extractPostEntries(entries),
};
}
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