import React from 'react'
import { Link } from 'gatsby'
import styled from 'styled-components'
import { staticBadgeUrl } from '../../core/badge-urls/make-badge-url'
import { advertisedStyles, shieldsLogos } from '../lib/supported-features'
// ts-expect-error: because reasons?
import StaticBadgeMaker from './static-badge-maker'
import DynamicBadgeMaker from './dynamic-badge-maker'
import { H2, H3, Badge, VerticalSpace } from './common'
import { Snippet, StyledCode } from './snippet'

const LogoName = styled.span`
  white-space: nowrap;
`

const Lhs = styled.td`
  text-align: right;
`

const EscapingRuleTable = styled.table`
  margin: auto;
`

const QueryParamTable = styled.table`
  min-width: 50%;
  margin: auto;
  table-layout: fixed;
  border-spacing: 20px 10px;
`

const QueryParamSyntax = styled.td`
  max-width: 300px;
  text-align: left;
`

const QueryParamDocumentation = styled.td`
  max-width: 600px;
  text-align: left;
`

function QueryParam({
  snippet,
  documentation,
}: {
  snippet: string
  documentation: JSX.Element | JSX.Element[]
}): JSX.Element {
  return (
    <tr>
      <QueryParamSyntax>
        <Snippet snippet={snippet} />
      </QueryParamSyntax>
      <QueryParamDocumentation>{documentation}</QueryParamDocumentation>
    </tr>
  )
}

function EscapingConversion({
  lhs,
  rhs,
}: {
  lhs: JSX.Element
  rhs: JSX.Element
}): JSX.Element {
  return (
    <tr>
      <Lhs>{lhs}</Lhs>
      <td>→</td>
      <td>{rhs}</td>
    </tr>
  )
}

function ColorExamples({
  baseUrl,
  colors,
}: {
  baseUrl: string
  colors: string[]
}): JSX.Element {
  return (
    <span>
      {colors.map((color, i) => (
        <Badge
          alt={color}
          key={color}
          src={staticBadgeUrl({ baseUrl, label: '', message: color, color })}
        />
      ))}
    </span>
  )
}

function StyleExamples({ baseUrl }: { baseUrl: string }): JSX.Element {
  return (
    <QueryParamTable>
      <tbody>
        {advertisedStyles.map(style => {
          const snippet = `?style=${style}&logo=appveyor`
          const badgeUrl = staticBadgeUrl({
            baseUrl,
            label: 'style',
            message: style,
            color: 'green',
            namedLogo: 'appveyor',
            style,
          })
          return (
            <QueryParam
              documentation={<Badge alt={style} src={badgeUrl} />}
              key={style}
              snippet={snippet}
            />
          )
        })}
      </tbody>
    </QueryParamTable>
  )
}

function NamedLogos(): JSX.Element {
  const renderLogo = (logo: string): JSX.Element => (
    <LogoName key={logo}>{logo}</LogoName>
  )
  const [first, ...rest] = shieldsLogos
  const result = ([renderLogo(first)] as (JSX.Element | string)[]).concat(
    rest.reduce(
      (result, logo) => result.concat([', ', renderLogo(logo)]),
      [] as (JSX.Element | string)[]
    )
  )
  return <>{result}</>
}

function StaticBadgeEscapingRules(): JSX.Element {
  return (
    <EscapingRuleTable>
      <tbody>
        <EscapingConversion
          key="dashes"
          lhs={
            <span>
              Dashes <code>--</code>
            </span>
          }
          rhs={
            <span>
              <code>-</code> Dash
            </span>
          }
        />
        <EscapingConversion
          key="underscores"
          lhs={
            <span>
              Underscores <code>__</code>
            </span>
          }
          rhs={
            <span>
              <code>_</code> Underscore
            </span>
          }
        />
        <EscapingConversion
          key="spaces"
          lhs={
            <span>
              <code>_</code> or Space <code>&nbsp;</code>
            </span>
          }
          rhs={
            <span>
              <code>&nbsp;</code> Space
            </span>
          }
        />
      </tbody>
    </EscapingRuleTable>
  )
}

export default function Usage({ baseUrl }: { baseUrl: string }): JSX.Element {
  return (
    <section>
      <H2 id="your-badge">Your Badge</H2>

      <H3>Static</H3>
      <StaticBadgeMaker baseUrl={baseUrl} />

      <VerticalSpace />

      <p>Using dash "-" separator</p>
      <p>
        <Snippet snippet={`${baseUrl}/badge/<LABEL>-<MESSAGE>-<COLOR>`} />
      </p>
      <StaticBadgeEscapingRules />
      <p>Using query string parameters</p>
      <p>
        <Snippet
          snippet={`${baseUrl}/static/v1?label=<LABEL>&message=<MESSAGE>&color=<COLOR>`}
        />
      </p>

      <H3 id="colors">Colors</H3>
      <p>
        <ColorExamples
          baseUrl={baseUrl}
          colors={[
            'brightgreen',
            'green',
            'yellowgreen',
            'yellow',
            'orange',
            'red',
            'blue',
            'lightgrey',
          ]}
        />
        <br />
        <ColorExamples
          baseUrl={baseUrl}
          colors={[
            'success',
            'important',
            'critical',
            'informational',
            'inactive',
          ]}
        />
        <br />
        <ColorExamples
          baseUrl={baseUrl}
          colors={['blueviolet', 'ff69b4', '9cf']}
        />
      </p>

      <H3>Endpoint</H3>

      <p>
        <Snippet snippet={`${baseUrl}/endpoint?url=<URL>&style<STYLE>`} />
      </p>

      <p>
        Create badges from <Link to="/endpoint">your own JSON endpoint</Link>.
      </p>

      <H3 id="dynamic-badge">Dynamic</H3>

      <DynamicBadgeMaker baseUrl={baseUrl} />

      <p>
        <StyledCode>
          {baseUrl}
          /badge/dynamic/json?url=&lt;URL&gt;&amp;label=&lt;LABEL&gt;&amp;query=&lt;
          <a
            href="https://jsonpath.com"
            rel="noopener noreferrer"
            target="_blank"
            title="JSONPath syntax"
          >
            $.DATA.SUBDATA
          </a>
          &gt;&amp;color=&lt;COLOR&gt;&amp;prefix=&lt;PREFIX&gt;&amp;suffix=&lt;SUFFIX&gt;
        </StyledCode>
      </p>
      <p>
        <StyledCode>
          {baseUrl}
          /badge/dynamic/xml?url=&lt;URL&gt;&amp;label=&lt;LABEL&gt;&amp;query=&lt;
          <a
            href="http://xpather.com"
            rel="noopener noreferrer"
            target="_blank"
            title="XPath syntax"
          >
            &#x2F;&#x2F;data/subdata
          </a>
          &gt;&amp;color=&lt;COLOR&gt;&amp;prefix=&lt;PREFIX&gt;&amp;suffix=&lt;SUFFIX&gt;
        </StyledCode>
      </p>
      <p>
        <StyledCode>
          {baseUrl}
          /badge/dynamic/yaml?url=&lt;URL&gt;&amp;label=&lt;LABEL&gt;&amp;query=&lt;
          <a
            href="https://jsonpath.com"
            rel="noopener noreferrer"
            target="_blank"
            title="YAML (JSONPath) syntax"
          >
            $.DATA.SUBDATA
          </a>
          &gt;&amp;color=&lt;COLOR&gt;&amp;prefix=&lt;PREFIX&gt;&amp;suffix=&lt;SUFFIX&gt;
        </StyledCode>
      </p>

      <VerticalSpace />

      <H2 id="styles">Styles</H2>

      <p>
        The following styles are available. Flat is the default. Examples are
        shown with an optional logo:
      </p>
      <StyleExamples baseUrl={baseUrl} />

      <p>
        Here are a few other parameters you can use: (connecting several with
        "&" is possible)
      </p>
      <QueryParamTable>
        <tbody>
          <QueryParam
            documentation={
              <span>
                Override the default left-hand-side text (
                <a href="https://developer.mozilla.org/en-US/docs/Glossary/percent-encoding">
                  URL-Encoding
                </a>
                {} needed for spaces or special characters!)
              </span>
            }
            key="label"
            snippet="?label=healthinesses"
          />
          <QueryParam
            documentation={
              <span>
                Insert one of the named logos from (<NamedLogos />) or{' '}
                <a
                  href="https://simpleicons.org/"
                  rel="noopener noreferrer"
                  target="_blank"
                >
                  simple-icons
                </a>
                . Simple-icons are referenced using icon slugs which can be
                found on the simple-icons site or in the{' '}
                <a href="https://github.com/simple-icons/simple-icons/blob/develop/slugs.md">
                  slugs.md file
                </a>{' '}
                in the simple-icons repository.
              </span>
            }
            key="logo"
            snippet="?logo=appveyor"
          />
          <QueryParam
            documentation={
              <span>
                Insert custom logo image (≥ 14px high). There is a limit on the
                total size of request headers we can accept (8192 bytes). From a
                practical perspective, this means the base64-encoded image text
                is limited to somewhere slightly under 8192 bytes depending on
                the rest of the request header.
              </span>
            }
            key="logoSvg"
            snippet="?logo=data:image/png;base64,…"
          />
          <QueryParam
            documentation={
              <span>
                Set the color of the logo (hex, rgb, rgba, hsl, hsla and css
                named colors supported). Supported for named logos and Shields
                logos but not for custom logos. For multicolor Shields logos,
                the corresponding named logo will be used and colored.
              </span>
            }
            key="logoColor"
            snippet="?logoColor=violet"
          />
          <QueryParam
            documentation={
              <span>Set the horizontal space to give to the logo</span>
            }
            key="logoWidth"
            snippet="?logoWidth=40"
          />
          <QueryParam
            documentation={
              <span>
                Specify what clicking on the left/right of a badge should do.
                Note that this only works when integrating your badge in an
                <StyledCode>&lt;object&gt;</StyledCode> HTML tag, but not an
                <StyledCode>&lt;img&gt;</StyledCode> tag or a markup language.
              </span>
            }
            key="link"
            snippet="?link=http://left&amp;link=http://right"
          />
          <QueryParam
            documentation={
              <span>
                Set background of the left part (hex, rgb, rgba, hsl, hsla and
                css named colors supported). The legacy name "colorA" is also
                supported.
              </span>
            }
            key="labelColor"
            snippet="?labelColor=abcdef"
          />
          <QueryParam
            documentation={
              <span>
                Set background of the right part (hex, rgb, rgba, hsl, hsla and
                css named colors supported). The legacy name "colorB" is also
                supported.
              </span>
            }
            key="color"
            snippet="?color=fedcba"
          />
          <QueryParam
            documentation={
              <span>
                Set the HTTP cache lifetime (rules are applied to infer a
                default value on a per-badge basis, any values specified below
                the default will be ignored). The legacy name "maxAge" is also
                supported.
              </span>
            }
            key="cacheSeconds"
            snippet="?cacheSeconds=3600"
          />
        </tbody>
      </QueryParamTable>

      <p>
        We support <code>.svg</code> and <code>.json</code>. The default is{' '}
        <code>.svg</code>, which can be omitted from the URL.
      </p>

      <p>
        While we highly recommend using SVG, we also support <code>.png</code>{' '}
        for use cases where SVG will not work. These requests should be made to
        our raster server <code>https://raster.shields.io</code>. For example,
        the raster equivalent of{' '}
        <code>https://img.shields.io/npm/v/express</code> is{' '}
        <code>https://raster.shields.io/npm/v/express</code>. For backward
        compatibility, the badge server will redirect <code>.png</code> badges
        to the raster server.
      </p>
    </section>
  )
}