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| 1 | +// `meta verify` — the build-time prompt drift gate (FR-004 Plan #3, T6). |
| 2 | +// |
| 3 | +// Loads metadata from a directory; for each template node resolves its @textRef |
| 4 | +// text via a filesystem provider, derives the @payloadRef view-object's field |
| 5 | +// tree from the loaded metadata, and runs the engine's verify() — reporting drift |
| 6 | +// (a template variable the payload doesn't declare, an unresolved partial) so CI |
| 7 | +// fails before a renamed field can silently break a prompt. Runs at the last |
| 8 | +// fixed point before serve, never on the request path. |
| 9 | + |
| 10 | +using MetaObjects.Codegen; |
| 11 | +using MetaObjects.Loader; |
| 12 | +using MetaObjects.Render; |
| 13 | +using static MetaObjects.Shared.BaseTypes; |
| 14 | +using static MetaObjects.Template.TemplateConstants; |
| 15 | + |
| 16 | +namespace MetaObjects.Cli; |
| 17 | + |
| 18 | +/// <summary>The verify command's pure logic — no console I/O, so it is testable.</summary> |
| 19 | +public static class VerifyCommand |
| 20 | +{ |
| 21 | + public sealed record Drift(string Template, string Code, string Path); |
| 22 | + |
| 23 | + public sealed record Outcome( |
| 24 | + IReadOnlyList<string> LoadErrors, |
| 25 | + IReadOnlyList<Drift> Errors, |
| 26 | + IReadOnlyList<Drift> Warnings, |
| 27 | + IReadOnlyList<string> UnresolvedText) |
| 28 | + { |
| 29 | + /// <summary>Clean iff no load errors, no drift errors, and every @textRef resolved.</summary> |
| 30 | + public bool Ok => LoadErrors.Count == 0 && Errors.Count == 0 && UnresolvedText.Count == 0; |
| 31 | + } |
| 32 | + |
| 33 | + public static Outcome Run(string metadataDir, string templatesRoot) |
| 34 | + { |
| 35 | + var load = new FileMetaDataLoader().LoadDirectory(metadataDir); |
| 36 | + var loadErrors = load.Errors.Select(e => e.Code.ToString()).ToList(); |
| 37 | + |
| 38 | + var provider = new FilesystemProvider(templatesRoot); |
| 39 | + var errors = new List<Drift>(); |
| 40 | + var warnings = new List<Drift>(); |
| 41 | + var unresolved = new List<string>(); |
| 42 | + |
| 43 | + foreach (var tmpl in load.Root.OwnChildren().Where(c => c.Type == TYPE_TEMPLATE)) |
| 44 | + { |
| 45 | + // Missing @textRef / @payloadRef are already load errors (Pass 9 + schema). |
| 46 | + if (tmpl.OwnAttr(TEMPLATE_ATTR_TEXT_REF) is not string textRef || |
| 47 | + tmpl.OwnAttr(TEMPLATE_ATTR_PAYLOAD_REF) is not string payloadRef) |
| 48 | + continue; |
| 49 | + |
| 50 | + var text = provider.Resolve(textRef); |
| 51 | + if (text is null) |
| 52 | + { |
| 53 | + unresolved.Add($"template \"{tmpl.Name}\": @textRef \"{textRef}\" did not resolve under {templatesRoot}"); |
| 54 | + continue; |
| 55 | + } |
| 56 | + |
| 57 | + var fields = PayloadCodegen.BuildPayloadFieldTree(load.Root, payloadRef); |
| 58 | + IReadOnlyList<string> requiredSlots = tmpl.OwnAttr(TEMPLATE_ATTR_REQUIRED_SLOTS) switch |
| 59 | + { |
| 60 | + IReadOnlyList<string> ss => ss.ToList(), |
| 61 | + IReadOnlyList<object?> os => os.OfType<string>().ToList(), |
| 62 | + string s => [s], |
| 63 | + _ => [], |
| 64 | + }; |
| 65 | + |
| 66 | + var verifyOptions = new VerifyOptions { Provider = provider, RequiredSlots = requiredSlots }; |
| 67 | + foreach (var e in Verify.Check(text, fields, verifyOptions)) |
| 68 | + { |
| 69 | + var drift = new Drift(tmpl.Name, e.Code, e.Path); |
| 70 | + if (e.Code == Verify.ERR_REQUIRED_SLOT_UNUSED) warnings.Add(drift); |
| 71 | + else errors.Add(drift); |
| 72 | + } |
| 73 | + } |
| 74 | + |
| 75 | + return new Outcome(loadErrors, errors, warnings, unresolved); |
| 76 | + } |
| 77 | +} |
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