import { describe, expect, it } from "vitest";

import { isSupportedEvidenceKey } from "../../../src/features/tech-log/adapters/static/evidence-assets.ts";
import {
  evidenceCatalogEntriesFromAssets,
  supportsResolvableEvidenceKey,
} from "../../../src/features/tech-log/domain/content-format/asset-evidence-catalog.ts";
import {
  ContentFormatError,
  parseCaseContent,
} from "../../../src/features/tech-log/domain/content-format/parse-case-content.ts";
import {
  evidenceCatalogEntryFor,
  projectWorkingCopy,
} from "../../../src/features/tech-log/domain/content-format/project-public-render-model.ts";
import { serializeCaseContent } from "../../../src/features/tech-log/domain/content-format/serialize-case-content.ts";
import type { components } from "../../../src/features/tech-log/contracts/studio/generated.ts";
import type { Asset } from "../../../src/features/tech-log/contracts/studio/contract.ts";

/**
 * Fix round 4. Calls the production composition itself
 * (`supportsResolvableEvidenceKey`) rather than re-deriving it: every caller
 * -- `validate-working-copy.ts`, `adapters/mock/project-public-render-model.ts`,
 * `instant-preview.tsx` -- builds its key gate from this exact function, so a
 * caller drifting away from it now shows up here too. The question is "does a
 * resolvable Asset (or the legacy static key) back this", never "is there any
 * EVIDENCE catalog row for it" -- that is the projection's separate catalog
 * check against its own `catalog` argument. Tests below that pass no `assets`
 * reduce to the legacy check alone.
 */
function supportsEvidenceKey(
  key: string,
  assets: readonly Asset[] = [],
): boolean {
  return supportsResolvableEvidenceKey(assets, isSupportedEvidenceKey)(key);
}

const rich = `## 측정 결과 {#measurements}

:::table id="fetch-loss" caption="반환 손실" rowHeaderColumn="1"
| 상태 | 결과 |
| --- | ---: |
| before | :status[20건]{tone="warning"} |
:::

\`\`\`sql label="재현 쿼리"
select * from feed_item;
\`\`\``;

describe("Content Format v1", () => {
  it("parses and serializes the rich source fixture byte-for-byte", () => {
    const parsed = parseCaseContent(rich);

    expect(serializeCaseContent(parsed)).toBe(rich);
    expect(parseCaseContent(serializeCaseContent(parsed))).toEqual(parsed);
    expect(parsed.map((block) => block.type)).toEqual([
      "HEADING",
      "DATA_TABLE",
      "CODE_BLOCK",
    ]);
  });

  it("accepts the plain Markdown the server renderer already accepted", () => {
    /*
      이 문법들은 서버 렌더러가 원래 읽던 것인데 이 파서만 거절하고 있었다 — 같은 본문이 Studio
      와 공개 화면에서 다르게 읽혔다. 표는 `:::table` 로 감싸지 않아도 되고, callout 이름은 서버가
      아는 note/tip/warning/danger 를 쓴다.
    */
    expect(parseCaseContent("| A | B |\n|---|---|\n| 1 | 2 |").map((block) => block.type)).toEqual([
      "DATA_TABLE",
    ]);
    expect(parseCaseContent(":::note\n\n참고할 것.\n\n:::").map((block) => block.type)).toEqual([
      "CALLOUT",
    ]);
    expect(parseCaseContent(":::danger\n\n위험.\n\n:::").map((block) => block.type)).toEqual([
      "CALLOUT",
    ]);
    expect(parseCaseContent("# 제목1\n\n###### 제목6").map((block) => block.type)).toEqual([
      "HEADING",
      "HEADING",
    ]);
    expect(parseCaseContent("---").map((block) => block.type)).toEqual(["THEMATIC_BREAK"]);
    expect(parseCaseContent("![대체](/api/v1/public/media/x)").map((block) => block.type)).toEqual([
      "IMAGE",
    ]);
    // 속성이 없는 directive 도 이름이 온전해야 한다. 정규화 정규식이 되돌아가며 마지막 글자를
    // 속성 쪽으로 넘기는 바람에 `:::note` 가 `:::not{e}` 로 바뀌던 적이 있다.
    expect(() => parseCaseContent(":::unknown\n\ntext\n\n:::")).toThrow(
      /unknown block directive: unknown/,
    );
  });

  it("rejects unsafe, raw HTML, and unsupported input with source positions", () => {
    const rejected = [
      "<script>alert(1)</script>",
      "[x](javascript:alert(1))",
      "[x](//evil.example/path)",
      "[x](//techlog.invalid/path)",
      "[x](///techlog.invalid/path)",
      "[x](//user@techlog.invalid/path)",
      "[x](/\\evil.example/path)",
      "[x](/\\\\evil.example/path)",
      "[x](</safe\u0001path>)",
      "[x](</safe\u001fpath>)",
      "[x](</safe\u007fpath>)",
      "- outer\n  - nested",
      "- [ ] task",
      "> > nested",
      ':::unknown key="value"\ntext\n:::',
      ':::evidence key="https://example.com/x.png" alt="x" caption="x" zoom="true"\n:::',
      "![x](javascript:alert(1))",
      "![x](//evil.example/x.png)",
    ];

    for (const source of rejected) {
      expect(() => parseCaseContent(source), source).toThrow(
        /CONTENT_FORMAT_INVALID/,
      );
    }

    try {
      parseCaseContent("safe\n\n<script>alert(1)</script>");
      throw new Error("expected malformed content to fail");
    } catch (error) {
      expect(error).toBeInstanceOf(ContentFormatError);
      expect((error as ContentFormatError).issues).toEqual([
        {
          line: 3,
          column: 1,
          detail: "unsupported block syntax: html",
        },
      ]);
    }
  });

  it("keeps explicitly allowed links and same-origin paths", () => {
    const [paragraph] = parseCaseContent(
      "[fragment](#section) [path](/safe/path) [query](/safe/path?q=one) [http](http://example.com/path) [https](https://example.com/path) [mail](mailto:test@example.com)",
    );

    expect(paragraph?.type).toBe("PARAGRAPH");
    if (paragraph?.type !== "PARAGRAPH") return;
    expect(
      paragraph.content
        .filter((inline) => inline.type === "LINK")
        .map((inline) => inline.href),
    ).toEqual([
      "#section",
      "/safe/path",
      "/safe/path?q=one",
      "http://example.com/path",
      "https://example.com/path",
      "mailto:test@example.com",
    ]);
  });

  it("generates stable Korean heading IDs and suffixes duplicates", () => {
    const blocks = parseCaseContent("## 한글 API!\n\n## 한글 API?\n\n## !!!");

    expect(
      blocks.map((block) => (block.type === "HEADING" ? block.id : null)),
    ).toEqual(["한글-api", "한글-api-2", "section"]);
  });

  it("round trips every supported block and inline variant", () => {
    const source = `## 본문 {#body}

일반 *강조* **강함** \`code\` [내부](/path) [메일](mailto:test@example.com)

> 한 문단 인용

- 첫째
- 둘째

1. 하나
2. 둘

:::callout tone="info" label="정보"
안전한 안내입니다.
:::

:::evidence key="fetch-strategy-boundary" alt="비교" caption="경계" zoom="false"
:::`;
    const parsed = parseCaseContent(source);

    expect(parseCaseContent(serializeCaseContent(parsed))).toEqual(parsed);
    expect(parsed.map((block) => block.type)).toEqual([
      "HEADING",
      "PARAGRAPH",
      "BLOCKQUOTE",
      "UNORDERED_LIST",
      "ORDERED_LIST",
      "CALLOUT",
      "EVIDENCE_FIGURE",
    ]);
  });

  it("parses a decorative evidence figure with an empty alt", () => {
    const source =
      ':::evidence key="fetch-strategy-boundary" alt="" caption="" zoom="false"\n:::';
    const [block] = parseCaseContent(source);

    expect(block?.type).toBe("EVIDENCE_FIGURE");
    if (block?.type !== "EVIDENCE_FIGURE") return;
    expect(block.alt).toBe("");
  });

  it("round-trips an empty alt without reintroducing it as a parse error", () => {
    const source =
      ':::evidence key="fetch-strategy-boundary" alt="" caption="" zoom="false"\n:::';
    const parsed = parseCaseContent(source);

    expect(() => parseCaseContent(serializeCaseContent(parsed))).not.toThrow();
  });

  it("still rejects an unsafe evidence key", () => {
    expect(() =>
      parseCaseContent(
        ':::evidence key="../etc" alt="x" caption="" zoom="false"\n:::',
      ),
    ).toThrow(/CONTENT_FORMAT_INVALID/);
  });

  it("derives stable table column and row IDs", () => {
    const [table] = parseCaseContent(`:::table id="metrics" caption="측정" rowHeaderColumn="none"
| 이름 | 수치 |
| :--- | ---: |
| before | 20 |
:::`);

    expect(table?.type).toBe("DATA_TABLE");
    if (table?.type !== "DATA_TABLE") return;
    expect(table.columns.map((column) => column.id)).toEqual([
      "metrics-column-1",
      "metrics-column-2",
    ]);
    expect(table.rows.map((row) => row.id)).toEqual(["metrics-row-1"]);
  });

  it("rejects unsupported inline syntax in table headers", () => {
    for (const header of [
      "<script>alert(1)</script>",
      "![image](https://example.com/image.png)",
      "~~deleted~~",
    ]) {
      const source = `:::table id="unsafe-header" caption="검증" rowHeaderColumn="none"
| ${header} |
| --- |
| value |
:::`;
      expect(() => parseCaseContent(source), header).toThrow(
        /CONTENT_FORMAT_INVALID/,
      );
    }
  });

  const metricsTable = `:::table id="metrics" caption="측정" rowHeaderColumn="none"
| 이름 | 값 |
| --- | --- |
| before | 20 |
:::`;

  it("rejects duplicate table IDs", () => {
    expect(() =>
      parseCaseContent(`${metricsTable}\n\n${metricsTable}`),
    ).toThrow(/duplicate explicit ID: metrics/);
  });

  it("rejects heading and table base ID collisions in either order", () => {
    expect(() =>
      parseCaseContent(`## 제목 {#metrics}\n\n${metricsTable}`),
    ).toThrow(/duplicate explicit ID: metrics/);
    expect(() =>
      parseCaseContent(`${metricsTable}\n\n## 제목 {#metrics}`),
    ).toThrow(/duplicate explicit ID: metrics/);
  });

  it("rejects heading IDs that collide with a later table column ID", () => {
    expect(() =>
      parseCaseContent(`## 열 {#metrics-column-1}\n\n${metricsTable}`),
    ).toThrow(/duplicate explicit ID: metrics-column-1/);
  });

  it("rejects table row IDs that collide with a later heading ID", () => {
    expect(() =>
      parseCaseContent(`${metricsTable}\n\n## 행 {#metrics-row-1}`),
    ).toThrow(/duplicate explicit ID: metrics-row-1/);
  });

  function expectRoundTrip(source: string) {
    const parsed = parseCaseContent(source);
    expect(parseCaseContent(serializeCaseContent(parsed))).toEqual(parsed);
  }

  it("round trips literal backslashes and intraword underscores", () => {
    expectRoundTrip("literal_under_score and \\*star\\* and \\\\slash");
  });

  it("round trips literal emphasis-shaped underscores", () => {
    expectRoundTrip("literal \\_emphasis\\_");
  });

  it("keeps escaped block-leading list and quote markers as paragraphs", () => {
    for (const source of ["\\- literal", "\\> quote"]) {
      const parsed = parseCaseContent(source);
      expect(parsed[0]?.type).toBe("PARAGRAPH");
      expect(parseCaseContent(serializeCaseContent(parsed))).toEqual(parsed);
    }
  });

  it("round trips inline code containing backticks", () => {
    expectRoundTrip("Use ``code ` tick`` here.");
  });

  it("round trips all-space inline code without semantic padding", () => {
    expectRoundTrip("Use ``   `` here.");
  });

  it("round trips escaped pipes in table cells", () => {
    expectRoundTrip(`:::table id="pipes" caption="파이프" rowHeaderColumn="none"
| 표현 | 값 |
| --- | --- |
| a \\| b | c |
:::`);
  });

  it("round trips directive-looking text inside a longer code fence", () => {
    expectRoundTrip(`\`\`\`\`text label="문법 예시"
:::callout tone="warning" label="코드 안"
\`\`\`inner
literal
\`\`\`
\`\`\`\``);
  });
});

const catalog: components["schemas"]["CatalogEntry"][] = [
  {
    id: "topic-jpa",
    type: "TOPIC",
    label: "JPA",
    publicPath: "/topics/jpa",
    dependencyRevision: "r1",
  },
  {
    id: "project-backend",
    type: "PROJECT",
    label: "Backend Skeleton",
    publicPath: "/projects/backend-skeleton",
    dependencyRevision: "r1",
  },
  {
    id: "case-fetch",
    type: "RELATION",
    kind: "CASE",
    label: "Fetch Join Case",
    publicPath: "/cases/collection-fetch-join-pagination",
    dependencyRevision: "r1",
  },
  {
    id: "evidence-fetch",
    type: "EVIDENCE",
    label: "Fetch 전략 비교",
    publicPath: "/media/fetch-strategy-boundary.svg",
    dependencyRevision: "r1",
  },
  {
    id: "resolution-evidence",
    type: "EVIDENCE",
    label: "Fetch Join Case",
    publicPath: "/cases/collection-fetch-join-pagination",
    dependencyRevision: "r1",
  },
];

function caseWithEvidence(
  key: string,
): components["schemas"]["CaseInput"] {
  return {
    kind: "CASE",
    title: "Case",
    slug: "case",
    summary: "summary",
    topicId: "topic-jpa",
    projectId: "project-backend",
    relations: [
      {
        id: "relation-1",
        targetId: "case-fetch",
        reason: "근거",
        order: 1,
      },
    ],
    problem: "problem",
    conclusion: "conclusion",
    environment: "environment",
    reproduction: "dataset",
    lastVerifiedOn: "2026-08-14",
    bodyMarkdown: `## 본문\n\n:::evidence key="${key}" alt="설명" caption="근거" zoom="true"\n:::`,
  };
}

describe("Public render model projection", () => {
  it("is pure and resolves a supported catalog evidence entry", () => {
    const input = caseWithEvidence("fetch-strategy-boundary");
    const before = structuredClone(input);
    const model = projectWorkingCopy(
      input,
      catalog,
      {
        generatedAt: "2026-08-14T00:00:00Z",
        dependencyRevision: "r1",
      },
      supportsEvidenceKey,
    );

    expect(model.kind).toBe("CASE");
    expect(model.topic.label).toBe("JPA");
    expect(model.project?.label).toBe("Backend Skeleton");
    expect(model.relations[0]?.title).toBe("Fetch Join Case");
    expect(input).toEqual(before);
  });

  it("preserves resolved Question fields and requires EVIDENCE", () => {
    const input: components["schemas"]["QuestionInput"] = {
      kind: "QUESTION",
      title: "Question",
      slug: "question",
      summary: "summary",
      topicId: "topic-jpa",
      projectId: null,
      relations: [],
      questionStatus: "RESOLVED",
      facts: [],
      assumptions: [],
      unknowns: [],
      constraints: [],
      options: [],
      nextValidation: "다음에도 측정합니다.",
      resolution: {
        summary: "분리하기로 결정했습니다.",
        evidenceTargetId: "resolution-evidence",
        linkLabel: "Case 읽기",
      },
    };
    const model = projectWorkingCopy(
      input,
      catalog,
      { mode: "PREVIEW", publishedAt: null },
      supportsEvidenceKey,
    );

    expect(model.kind).toBe("QUESTION");
    if (model.kind !== "QUESTION") return;
    expect(model.nextValidation).toBe(input.nextValidation);
    expect(model.resolution?.summary).toBe(input.resolution?.summary);
    expect(model.resolution?.evidenceTarget.publicPath).toBe(
      "/cases/collection-fetch-join-pagination",
    );
    expect(() =>
      projectWorkingCopy(
        {
          ...input,
          resolution: {
            ...input.resolution!,
            evidenceTargetId: "topic-jpa",
          },
        },
        catalog,
        { mode: "PREVIEW", publishedAt: null },
        supportsEvidenceKey,
      ),
    ).toThrow(/EVIDENCE catalog/);
  });

  const unsupportedEvidenceCatalog = [
    ...catalog,
    {
      id: "unsupported-id",
      type: "EVIDENCE",
      label: "지원하지 않음",
      publicPath: "/media/unsupported-id.svg",
      dependencyRevision: "r1",
    },
    {
      id: "other-id",
      type: "EVIDENCE",
      label: "unsupported-label",
      publicPath: "/media/unsupported-label.svg",
      dependencyRevision: "r1",
    },
  ] satisfies components["schemas"]["CatalogEntry"][];

  function expectUnsupportedEvidence(key: string) {
    expect(() =>
      projectWorkingCopy(
        caseWithEvidence(key),
        unsupportedEvidenceCatalog,
        { mode: "PREVIEW", publishedAt: null },
        supportsEvidenceKey,
      ),
    ).toThrow(/supported local evidence key/);
  }

  it("rejects an unknown evidence key", () => {
    expectUnsupportedEvidence("unknown-asset");
  });

  it("rejects a catalog-matching unsupported evidence ID", () => {
    expectUnsupportedEvidence("unsupported-id");
  });

  it("rejects a catalog-matching unsupported evidence label", () => {
    expectUnsupportedEvidence("unsupported-label");
  });

  // Fix round 2 regression coverage. `catalog` above already carries
  // "resolution-evidence" -- a real `EVIDENCE` row that exists for a
  // QUESTION resolution target (see "requires EVIDENCE" above), not media.
  // A production caller whose gate 1 collapsed into gate 2 (round 1's bug)
  // would let this key through with no Asset and no legacy key backing it;
  // this is the exact class of catalog row the reviewer used to reproduce
  // that regression.
  it("rejects a real EVIDENCE catalog row that exists for a different purpose than media (round 2 regression)", () => {
    expect(() =>
      projectWorkingCopy(
        caseWithEvidence("resolution-evidence"),
        catalog,
        { mode: "PREVIEW", publishedAt: null },
        supportsEvidenceKey,
      ),
    ).toThrow(/supported local evidence key/);
  });

  it("accepts a key backed by a loaded READY Asset even though the document catalog carries no matching row", () => {
    const assets: Asset[] = [
      {
        id: "99999999-9999-4999-8999-999999999999",
        assetKey: "boundary-check",
        kind: "DIAGRAM",
        mediaType: "image/svg+xml",
        originalFilename: "boundary.svg",
        byteSize: 10,
        width: null,
        height: null,
        altText: null,
        decorative: false,
        managementStatus: "READY",
        publicPath: "/media/boundary-check.svg",
        usageCount: 0,
        version: 1,
        createdAt: "2026-08-14T00:00:00.000Z",
        updatedAt: "2026-08-14T00:00:00.000Z",
      },
    ];
    // `catalog` alone has no row for "boundary-check" -- gate 2 only passes
    // because the caller merges in `evidenceCatalogEntriesFromAssets`, the
    // same way every production caller does.
    const evidenceCatalog = [...catalog, ...evidenceCatalogEntriesFromAssets(assets)];

    const model = projectWorkingCopy(
      caseWithEvidence("boundary-check"),
      evidenceCatalog,
      { mode: "PREVIEW", publishedAt: null },
      (key: string) => supportsEvidenceKey(key, assets),
    );

    expect(model.kind).toBe("CASE");
  });
});