daniel-c-harvey
35 lines
1.5 KiB
C#
35 lines
1.5 KiB
C#
namespace DeepDrftPublic.Seo;
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/// <summary>
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/// Pure composition of the <c>robots.txt</c> body (Phase 23 wave 23.1). The environment gate is the
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/// caller's: the endpoint reads <see cref="Microsoft.AspNetCore.Hosting.IWebHostEnvironment.IsProduction"/>
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/// server-side and passes the boolean here, so the production-vs-beta branch lives in one testable place.
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/// Fail-safe is closed — anything that is not Production yields <c>Disallow: /</c> (Invariant E1).
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/// </summary>
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public static class RobotsTxt
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{
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/// <summary>
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/// Builds the directive body. In Production: allow everything except the embed shell and the proxy API
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/// paths, plus a <c>Sitemap:</c> pointer (OQ-R2). In any non-production environment: a closed door
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/// (<c>Disallow: /</c>) with no sitemap pointer, so a crawl of beta sees nothing and the sitemap is
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/// never advertised.
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/// </summary>
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/// <param name="isProduction">The server-side <c>IsProduction()</c> result — the single gate.</param>
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/// <param name="baseUrl">Canonical origin (no trailing slash) for the <c>Sitemap:</c> line; Production only.</param>
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public static string Build(bool isProduction, string baseUrl)
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{
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if (!isProduction)
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{
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return "User-agent: *\n" +
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"Disallow: /\n";
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}
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var origin = baseUrl.TrimEnd('/');
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return "User-agent: *\n" +
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"Allow: /\n" +
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"Disallow: /FramePlayer\n" +
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"Disallow: /api/\n" +
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$"Sitemap: {origin}/sitemap.xml\n";
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}
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}
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