import { afterEach, describe, it } from "node:test";
import { expect } from "expect";

import { validateEvidenceReferences } from "../../src/evidence/validate.js";
import { createTempRepo, type TempRepo } from "../helpers/temp-repo.js";

describe("validateEvidenceReferences", () => {
  const repos: TempRepo[] = [];

  afterEach(async () => {
    await Promise.all(repos.splice(0).map((repo) => repo.cleanup()));
  });

  it("reports deleted referenced files", async () => {
    const repo = await createTempRepo();
    repos.push(repo);
    await repo.writeFile(
      "docs/truthmark/truth/sample.md",
      "---\nstatus: active\nsource_of_truth:\n  - ../../src/missing.ts\n---\n# Sample\n",
    );

    const diagnostics = await validateEvidenceReferences(repo.rootDir, [
      "docs/truthmark/truth/sample.md",
    ]);

    expect(diagnostics).toContainEqual(
      expect.objectContaining({
        category: "source-traceability",
        severity: "error",
        file: "docs/truthmark/truth/sample.md",
      }),
    );
  });

  it("accepts source_of_truth glob references that match repository files", async () => {
    const repo = await createTempRepo();
    repos.push(repo);

    await repo.writeFile("src/index.ts", "export const value = 1;\n");
    await repo.writeFile(
      "docs/truthmark/truth/sample.md",
      "---\nstatus: active\nsource_of_truth:\n  - ../../../src/**/*.ts\n---\n# Sample\n",
    );

    const diagnostics = await validateEvidenceReferences(repo.rootDir, [
      "docs/truthmark/truth/sample.md",
    ]);

    expect(diagnostics).toEqual([]);
  });

  it("resolves bare source_of_truth filenames relative to the truth doc", async () => {
    const repo = await createTempRepo();
    repos.push(repo);

    await repo.writeFile("docs/truthmark/truth/overview.md", "# Overview\n");
    await repo.writeFile(
      "docs/truthmark/truth/sample.md",
      "---\nstatus: active\nsource_of_truth:\n  - overview.md\n---\n# Sample\n",
    );

    const diagnostics = await validateEvidenceReferences(repo.rootDir, [
      "docs/truthmark/truth/sample.md",
    ]);

    expect(diagnostics).toEqual([]);
  });

  it("validates final Source References bullets as traceability evidence", async () => {
    const repo = await createTempRepo();
    repos.push(repo);

    await repo.writeFile("src/index.ts", "export const value = 1;\n");
    await repo.writeFile(
      "docs/truthmark/truth/valid.md",
      `---
status: active
truth_kind: engineering-behavior
last_reviewed: 2026-06-14
---

# Valid

## Current Implementation Behavior

Uses the current source file.

## Source References

- ../../../src/index.ts
`,
    );
    await repo.writeFile(
      "docs/truthmark/truth/missing.md",
      `---
status: active
truth_kind: engineering-behavior
last_reviewed: 2026-06-14
---

# Missing

## Current Implementation Behavior

References a missing file.

## Source References

- ../../../src/missing.ts
`,
    );

    const diagnostics = await validateEvidenceReferences(repo.rootDir, [
      "docs/truthmark/truth/valid.md",
      "docs/truthmark/truth/missing.md",
    ]);

    expect(diagnostics).toContainEqual(
      expect.objectContaining({
        category: "source-traceability",
        severity: "error",
        file: "docs/truthmark/truth/missing.md",
      }),
    );
    expect(diagnostics).not.toContainEqual(
      expect.objectContaining({
        file: "docs/truthmark/truth/valid.md",
      }),
    );
  });

  it("reports evidence line spans outside the file even without a content hash", async () => {
    const repo = await createTempRepo();
    repos.push(repo);

    await repo.writeFile("src/index.ts", "export const value = 1;\n");
    await repo.writeFile(
      "docs/truthmark/truth/sample.md",
      `---
status: active
---
# Sample

\`\`\`yaml
evidence:
  - path: ../../../src/index.ts
    start_line: 10
    end_line: 12
\`\`\`
`,
    );

    const diagnostics = await validateEvidenceReferences(repo.rootDir, [
      "docs/truthmark/truth/sample.md",
    ]);

    expect(diagnostics).toContainEqual(
      expect.objectContaining({
        category: "source-traceability",
        severity: "error",
        file: "docs/truthmark/truth/sample.md",
        message: expect.stringContaining("outside the file"),
      }),
    );
  });

  it("treats evidence symbols as non-normative metadata", async () => {
    const repo = await createTempRepo();
    repos.push(repo);

    await repo.writeFile("src/index.ts", "export const value = 1;\n");
    await repo.writeFile(
      "docs/truthmark/truth/symbol.md",
      `---
status: active
---
# Symbol metadata

\`\`\`yaml
evidence:
  - path: ../../../src/index.ts
    symbol: missingSymbol
\`\`\`
`,
    );

    const diagnostics = await validateEvidenceReferences(repo.rootDir, [
      "docs/truthmark/truth/symbol.md",
    ]);

    expect(diagnostics).toEqual([]);
  });

  it("ignores malformed non-evidence YAML while reporting malformed evidence YAML", async () => {
    const repo = await createTempRepo();
    repos.push(repo);

    await repo.writeFile("src/index.ts", "export const value = 1;\n");
    await repo.writeFile(
      "docs/truthmark/truth/non-evidence.md",
      `---
status: active
source_of_truth:
  - ../../../src/index.ts
---
# Non-evidence YAML

\`\`\`yaml
example:
  - value: [
\`\`\`
`,
    );
    await repo.writeFile(
      "docs/truthmark/truth/evidence.md",
      `---
status: active
source_of_truth:
  - ../../../src/index.ts
---
# Evidence YAML

\`\`\`yaml
evidence:
  - path: ../../../src/index.ts
    start_line: [
\`\`\`
`,
    );

    const diagnostics = await validateEvidenceReferences(repo.rootDir, [
      "docs/truthmark/truth/non-evidence.md",
      "docs/truthmark/truth/evidence.md",
    ]);

    expect(diagnostics).toContainEqual(
      expect.objectContaining({
        category: "source-traceability",
        severity: "error",
        file: "docs/truthmark/truth/evidence.md",
        message: expect.stringContaining("Malformed evidence YAML block"),
      }),
    );
    expect(diagnostics).not.toContainEqual(
      expect.objectContaining({
        category: "source-traceability",
        severity: "error",
        file: "docs/truthmark/truth/non-evidence.md",
        message: expect.stringContaining("Malformed evidence YAML block"),
      }),
    );
  });
});