Create a search page using Optimizely Graph

Prerequisites

Tutorial

Go to the components folder with the cd src/components command.

Create a new component with touch SearchButton.tsx command.

import { useState } from "react";
import { useSearchParams } from "react-router-dom";

type CustomString = string | number | readonly string[] | undefined

function SearchButton(): JSX.Element {
    const [searchParams] = useSearchParams()
    const [searchValue, setSearchValue] = useState<CustomString>(searchParams.get("q")?.toString())
    
    function search(event: any, action: string){
        if ((action == "keypress" && event.charCode === 13) || action == "buttonclick") {
            window.location.href = `${window.location.origin}/search?q=${searchValue}`
        }
    }

    function onValueChange(event: any){
        setSearchValue(event.target.value);
    }

    return (
        <div>
            <div className="nav-table-cell">
                <input className="search-input" type="text" id="search-input" placeholder="Search" 
                    onKeyPress={(event) => {search(event, 'keypress')}} value={searchValue} onChange={onValueChange} />
                    <a className="search-icon" onClick={(event) => {search(event, 'buttonclick')}}>
                        <i className="fa fa-search"></i>
                    </a>
            </div>
        </div>
    );
}

export default SearchButton;

Go to graphql folder using cd/graphql command.

Create two new GraphQL files using touch commands:
ArtistSearch.graphql

query ArtistSearch($searchParam: String, $locales: Locales!, $order: OrderBy) {
  ArtistDetailsPage(
    locale: [$locales]
    orderBy: { _ranking: RELEVANCE, ArtistName: $order }
    where: { _or: [{ Name: { contains: $searchParam, boost: 10 } }, { Name: { startsWith: $searchParam, boost: 10 } }, { StageName: { startsWith: $searchParam } }] }
  ) {
    items {
      PerformanceStartTime
      PerformanceEndTime
      StageName
      ArtistName
      ArtistPhoto
      ArtistGenre
      ArtistDescription
      ArtistIsHeadliner
      RelativePath
      ParentLink {
        Url
      }
      _fulltext
    }
  }
}

OtherContentSearch.graphql

query OtherContentSearch($searchParam: String, $locales: Locales!, $order: OrderBy) {
  Content(
    locale: [$locales]
    orderBy: { _ranking: RELEVANCE, Name: $order }
    where: { _or: [
      { Name: { contains: $searchParam, boost: 10 } }, 
      { Name: { startsWith: $searchParam, boost: 10 } }
    ],
      _and:{
        ContentType:{
          notEq: "ArtistDetailsPage"
        }
      }
    }
  ) {
    items {
      Name
      RelativePath
      ParentLink {
        Url
      }
      _fulltext
      ContentType
    }
  }
}

Go to the pages folder using cd src/pages command.

Create a new page using touch SearchPage.tsx command.
SearchPage.tsx

import { useState } from "react";
import { useSearchParams } from "react-router-dom";
import Footer from "../components/Footer";
import Header from "../components/Header";
import SearchButton from "../components/SearchButton";
import { ArtistSearchQuery, OtherContentSearchQuery, useArtistSearchQuery, useOtherContentSearchQuery } from "../generated";
import { generateGQLSearchQueryVars } from "../helpers/queryCacheHelper";
import { getImageUrl, isEditOrPreviewMode } from "../helpers/urlHelper";
import ReactPaginate from 'react-paginate';

const singleKeyUrl = process.env.REACT_APP_CONTENT_GRAPH_GATEWAY_URL as string

function SearchPage() {
  const [token, setToken] = useState("")
  const [itemOffset, setItemOffset] = useState(0)
  const [otherItemOffset, setOtherItemOffset] = useState(0)
  const [itemsPerPage, setItemsPerPage] = useState(10)
  const [otherItemsPerPage, setOtherItemsPerPage] = useState(10)
  const [filterBy, setFilterBy] = useState("Artist")
  const [orderBy, setOrderBy] = useState("ASC")
  const [searchParams] = useSearchParams()
  const endOffset = itemOffset + itemsPerPage;
  const endOffsetOther = otherItemOffset + otherItemsPerPage;
  const modeEdit = isEditOrPreviewMode()
  let data: ArtistSearchQuery | undefined = undefined
  let otherData: OtherContentSearchQuery | undefined = undefined
  let queryString: string | null
  let resultNumber : number
  let otherResultNumber : number
  let variables: any
  let options: {value: string; key: string}[] = [
    {value: "ASC", key: "ASC"},
    {value: "DESC", key: "DESC"}
  ]
  let itemsPerPageOptions: {value: number; key: string}[] = [
    {value: 10, key: "10"},
    {value: 15, key: "15"}
  ]
  let filterByOption: {value: string; key: string}[] = [
    {value: "Artists", key: "Artist"},
    {value: "Other Content", key: "OtherContent"}
  ]

  queryString = searchParams.get("q")
  if(queryString === undefined || queryString == 'undefined'){
    queryString = ""
  }

  variables = generateGQLSearchQueryVars(token, window.location.pathname, queryString, orderBy);

  const { data : searchQueryData } = useArtistSearchQuery({ endpoint: singleKeyUrl }, variables, { staleTime: 2000, enabled: !modeEdit || !!token });
  data = searchQueryData
  resultNumber = data?.ArtistDetailsPage?.items?.length ?? 0
  const currentItems = data?.ArtistDetailsPage?.items?.slice(itemOffset, endOffset);
  const pageCount = Math.ceil(resultNumber / itemsPerPage);

  const { data : otherContentSearchQueryData } = useOtherContentSearchQuery({ endpoint: singleKeyUrl }, variables, { staleTime: 2000, enabled: !modeEdit || !!token });
  otherData = otherContentSearchQueryData
  otherResultNumber = otherData?.Content?.items?.length ?? 0
  const currentOtherItems = otherData?.Content?.items?.slice(otherItemOffset, endOffsetOther);
  const pageOtherCount = Math.ceil(otherResultNumber / itemsPerPage);

  const handlePageClick = (event: any) => {
    const newOffset = (event.selected * itemsPerPage) % resultNumber;
    setItemOffset(newOffset);
  };

  const handleItemsChange = (event: any) => {
    setItemsPerPage(event.target.value);
  };

  const handleOtherPageClick = (event: any) => {
    const newOffset = (event.selected * itemsPerPage) % otherResultNumber;
    setOtherItemOffset(newOffset);
  };

  const handleOtherItemsChange = (event: any) => {
    setOtherItemsPerPage(event.target.value);
  };

  const handleFilterByChange = (event: any) => {
    setFilterBy(event.target.value);
  };

  const handleChange = (event: any) => {
    setOrderBy(event.target.value);
  }

  return (
    <div>
      <Header />
      <div className="search-container">
        <div className="back-button">
          <a href={window.location.origin} className="home-link">
            <span>Back to Landing page</span>
          </a>
        </div>
        <div className="search-panel">
          <div style={{float: "left"}}>
            <SearchButton />
          </div>
          <div style={{float: "right"}}>
            <span>Filter by: </span>
            <select className="Button" onChange={handleFilterByChange}>
              {
                filterByOption.map((option) => {
                  return (
                    <option key={option.key} value={option.key}>{option.value}</option>
                  )
                })
              }
            </select>
          </div>
        </div>
        <div className="search-description">
          <h6>Your search for <span className="search-term">{queryString}</span> resulted in <span className="search-term">{filterBy == "Artist" ? resultNumber : otherResultNumber}</span> hits</h6>
        </div>
        <div className="search-sorting">
          <span>Sort: </span>
          <select onChange={e => handleChange(e)} className="Button">
            {
              options.map((option) => {
                return (
                  <option key={option.key} value={option.key}>{option.value}</option>
                )
              })
            }
          </select>
        </div>
        <div className="result-block">
          <div style={filterBy == "Artist" ? {display: "initial"}: {display: "none"}}>
            <div className="search-results">
              {
                currentItems?.map((content, idx) => {
                  return (
                    <div className="result" key={idx}>
                      <div className="card">
                        <div className="round">
                          <img className="ConditionalImage"
                            src={getImageUrl(content?.ArtistPhoto ?? '')}
                            alt={content?.ArtistName ?? ''} />
                        </div>
                        <div className="info">
                          <a href={content?.RelativePath ?? ''} className="EPiLink">
                            <p className="result-name">{content?.ArtistName}</p>
                          </a>
                        </div>
                      </div>               
                      <div>
                        <p className="result-description">{content?.ArtistDescription}</p>
                      </div>
                    </div>
                  )
                })
              }
            </div>
            <div className="search-pagination-block">
              <table>
                <tbody>
                <tr>
                  <td>
                    <span>Items per page: </span>
                    <select className="Button" onChange={handleItemsChange}>
                      {
                        itemsPerPageOptions.map((option) => {
                          return (
                            <option key={option.key} value={option.key}>{option.value}</option>
                          )
                        })
                      }
                    </select>
                  </td>
                  <td className="search-pagination">
                    <ReactPaginate
                      breakLabel="..."
                      nextLabel=">"
                      onPageChange={handlePageClick}
                      pageRangeDisplayed={5}
                      pageCount={pageCount}
                      previousLabel="<"
                      renderOnZeroPageCount={null}
                    />
                  </td>
                </tr>
                </tbody>
              </table>
            </div>
          </div>
          <div style={filterBy == "OtherContent" ? {display: "initial"}: {display: "none"}}>
            <div className="search-results">
              {
                currentOtherItems?.map((content, idx) => {
                  return (
                    <div className="result" key={idx}>
                      <div className="card">
                        <i className="fa fa-file"></i>
                        &nbsp;
                        <div className="info">
                          <a href={content?.RelativePath ?? ''} className="EPiLink">
                            <p className="result-name">{content?.Name}</p>
                          </a>
                        </div>
                      </div>               
                      <div>
                        <p className="result-description">{content?.RelativePath}</p>
                      </div>
                    </div>
                  )
                })
              }
            </div>
            <div className="search-pagination-block">
              <table>
                <tbody>
                <tr>
                  <td>
                    <span>Items per page: </span>
                    <select className="Button" onChange={handleOtherItemsChange}>
                      {
                        itemsPerPageOptions.map((option) => {
                          return (
                            <option key={option.key} value={option.key}>{option.value}</option>
                          )
                        })
                      }
                    </select>
                  </td>
                  <td className="search-pagination">
                    <ReactPaginate
                      breakLabel="..."
                      nextLabel=">"
                      onPageChange={handleOtherPageClick}
                      pageRangeDisplayed={5}
                      pageCount={pageOtherCount}
                      previousLabel="<"
                      renderOnZeroPageCount={null}
                    />
                  </td>
                </tr>
                </tbody>
              </table>
            </div>
          </div>
        </div>
        <Footer content={null}/>
      </div>
    </div>
  );
}

export default SearchPage;

Modify LandingPage.tsx page in order to create a new search box for the music festival site.
LandingPage.tsx

<div className="nav-table-row">
  <div className="nav-table-cell">
    <button className="Button buy-ticket-button">{content?.BuyTicketBlock?.Heading}</button>
  </div>
  <div className="nav-table-cell search-button-block">
    <SearchButton />
  </div>
</div>

Start the site with yarn start and you can see the search box now. It will redirect to the search page which contains search result.