// gatsby-config.js

module.exports = {
  plugins: [
    // You can have multiple instances of this plugin to create indexes with
    // different names or engines. For example, multi-lingual sites could create
    // an index for each language.
    {
      resolve: 'gatsby-plugin-local-search',
      options: {
        // A unique name for the search index. This should be descriptive of
        // what the index contains. This is required.
        name: 'pages',

        // Set the search engine to create the index. This is required.
        // The following engines are supported: flexsearch, lunr
        engine: 'flexsearch',

        // Provide options to the engine. This is optional and only recommended
        // for advanced users.
        //
        // Note: Only the flexsearch engine supports options.
        engineOptions: 'speed',

        // GraphQL query used to fetch all data for the search index. This is
        // required.
        query: `
          {
            allMarkdownRemark {
              nodes {
                id
                frontmatter {
                  path
                  title
                }
                rawMarkdownBody
              }
            }
          }
        `,

        // Field used as the reference value for each document.
        // Default: 'id'.
        ref: 'id',

        // List of keys to index. The values of the keys are taken from the
        // normalizer function below.
        // Default: all fields
        index: ['title', 'body'],

        // List of keys to store and make available in your UI. The values of
        // the keys are taken from the normalizer function below.
        // Default: all fields
        store: ['id', 'path', 'title'],

        // Function used to map the result from the GraphQL query. This should
        // return an array of items to index in the form of flat objects
        // containing properties to index. The objects must contain the `ref`
        // field above (default: 'id'). This is required.
        normalizer: ({ data }) =>
          data.allMarkdownRemark.nodes.map(node => ({
            id: node.id,
            path: node.frontmatter.path,
            title: node.frontmatter.title,
            body: node.rawMarkdownBody,
          })),
      },
    },
  ],
}