gatsby-config.mjs

import * as dotenv from 'dotenv';
import remarkGfm from "remark-gfm"
import { fileURLToPath } from "url"
import { dirname } from "path"

dotenv.config({
  path: `.env.${process.env.NODE_ENV}`,
});

const __dirname = dirname(fileURLToPath(import.meta.url))

const config = {
  siteMetadata: {
    title: "Vojtech Ruzicka's Programming Blog",
    author: "Vojtech Ruzicka",
    description:
      "Blog about Full-stack Software Development. Clean code, Design patterns, Java, Spring, Javascript, Angular, React and more.",
    siteUrl: "https://www.vojtechruzicka.com",
  },
  pathPrefix: "/",
  plugins: [
    {
      resolve: "gatsby-plugin-mdx-frontmatter",
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        path: `${__dirname}/src/pages`,
        name: "pages",
      },
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        path: `${__dirname}/src/posts`,
        name: "posts",
      },
    },
    {
      resolve: `gatsby-plugin-mdx`,
      options: {
        extensions: [`.mdx`],
        mdxOptions: {
          remarkPlugins: [remarkGfm],
        },
        gatsbyRemarkPlugins: [
          {
            resolve: "gatsby-remark-code-buttons",
            options: {
              toasterText: "Copied to clipboard.",
              tooltipText: `Copy to clipboard`,
            },
          },
          {
            resolve: "@weknow/gatsby-remark-codepen",
            options: {
              theme: "dark",
              height: 400,
              defaultTab: "result",
            },
          },
          {
            resolve: `gatsby-remark-images`,
            options: {
              maxWidth: 700,
              backgroundColor: "transparent",
              showCaptions: false,
              withWebp: true,
              withAvif: true,
            },
          },
          `gatsby-transformer-json`,
          {
            resolve: `gatsby-source-filesystem`,
            options: {
              path: `./src/data/`,
            },
          },
          {
            resolve: `gatsby-remark-responsive-iframe`,
            options: {
              wrapperStyle: `margin-bottom: 1.0725rem`,
            },
          },
          "gatsby-remark-prismjs",
          "gatsby-remark-copy-linked-files",
          "gatsby-remark-autolink-headers",
        ],
      },
    },
    {
      resolve: `gatsby-plugin-sharp`,
      options: {
        defaults: {
          formats: [`auto`, `webp`, `avif`],
          placeholder: `blurred`,
        },
      },
    },
    `gatsby-transformer-sharp`,
    "gatsby-plugin-image",
    {
      resolve: `gatsby-plugin-google-gtag`,
      options: {
        // You can add multiple tracking ids and a pageview event will be fired for all of them.
        trackingIds: [
          "UA-76533683-1", // Google Analytics 3
          "G-5SJ6ERGH23", // Google Analytics 4
        ],
        // This object gets passed directly to the gtag config command
        // This config will be shared across all trackingIds
        gtagConfig: {
          anonymize_ip: true,
          cookie_expires: 0,
        },
        // This object is used for configuration specific to this plugin
        pluginConfig: {
          // Puts tracking script in the head instead of the body
          head: false,
        },
      },
    },
    {
      resolve: `gatsby-plugin-feed-mdx`,
      options: {
        query: `
                {
                  site {
                    siteMetadata {
                      title
                      description
                      siteUrl
                      site_url: siteUrl
                    }
                  }
                }
              `,
        setup: ({
          query: {
            site: { siteMetadata },
            ...rest
          },
        }) => {
          return {
            ...siteMetadata,
            ...rest,
            custom_namespaces: {
              webfeeds: "http://webfeeds.org/rss/1.0",
            },
          };
        },
        feeds: [
          {
            serialize: ({ query: { site, allMdx } }) => {
              const rssCutoffDate = new Date("2023-01-01")

              return allMdx.edges
                .filter((edge) => edge.node.frontmatter.hidden !== "true")
                .filter((edge) => {
                  // Don't include old posts in the RSS feed
                  const postDate = new Date(edge.node.frontmatter.date)

                  if(postDate > rssCutoffDate) {
                    return true;
                  }

                  return false;
                }
                )
                .map((edge) => {
                  return Object.assign({}, edge.node.frontmatter, {
                    description: edge.node.frontmatter.excerpt,
                    url: site.siteMetadata.siteUrl + edge.node.frontmatter.path,
                    guid: site.siteMetadata.siteUrl + edge.node.frontmatter.path,
                    custom_elements: [
                      { "content:encoded": edge.node.html },
                      {
                        "webfeeds:logo":
                          site.siteMetadata.siteUrl + "/favicon.svg",
                      },
                      {
                        "webfeeds:icon":
                          site.siteMetadata.siteUrl + "/favicon.svg",
                      },
                      { "webfeeds:accentColor": "007acc" },
                      { "webfeeds:analytics": "UA-76533683-1" },
                      {
                        "webfeeds:cover": {
                          _attr: {
                            image:
                              site.siteMetadata.siteUrl +
                              edge.node.frontmatter.featuredImage
                                .childImageSharp.original.src,
                          },
                        },
                      },
                    ],
                  });
                });
            },
            query: `
                        {
                          allMdx(sort: {frontmatter: {date: DESC}}) {
                            edges {
                              node {
                                frontmatter {
                                  excerpt
                                  title
                                  date
                                  path
                                  hidden
                                  featuredImage {
                                    childImageSharp {
                                        original {
                                          src
                                        }
                                    }
                                  }
                                }
                              }
                            }
                          }
                        }
          `,
            output: "/feed",
            title: "Vojtech Ruzicka's Programming Blog",
          },
        ],
      },
    },
    `gatsby-plugin-sass`,
    {
      resolve: "gatsby-plugin-typography",
      options: {
        pathToConfigModule: "src/utils/typography",
      },
    },
    {
      resolve: `gatsby-plugin-manifest`,
      options: {
        name: "Vojtech Ruzicka's Programming Blog",
        short_name: "VR Blog",
        start_url: "https://www.vojtechruzicka.com",
        background_color: "#fff",
        theme_color: "#007acc",
        display: "minimal-ui",
        icons: [
          {
            src: `/favicons/favicon.png`,
            sizes: `64x64`,
            type: `image/png`,
          },
          {
            src: `/favicons/640x640.png`,
            sizes: `640x640`,
            type: `image/png`,
          },
        ],
      },
    },
    {
      resolve: `gatsby-plugin-canonical-urls`,
      options: {
        siteUrl: `https://www.vojtechruzicka.com`,
      },
    },
    {
      resolve: `gatsby-plugin-sitemap`,
      options: {
        excludes: [`/pages/*`],
      },
    },
    `gatsby-plugin-offline`,
    `gatsby-plugin-netlify`,
  ],
};

export default config;