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

import { isSupportedEvidenceKey } from "../../../src/features/tech-log/adapters/static/evidence-assets.ts";
import {
  ContentFormatError,
  parseCaseContent,
} from "../../../src/features/tech-log/domain/content-format/parse-case-content.ts";
import { 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";

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("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",
      "# level one",
      "- [ ] task",
      "> > nested",
      ':::unknown key="value"\ntext\n:::',
      ':::evidence key="https://example.com/x.png" alt="x" caption="x" zoom="true"\n:::',
    ];

    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("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",
      },
      isSupportedEvidenceKey,
    );

    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 },
      isSupportedEvidenceKey,
    );

    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 },
        isSupportedEvidenceKey,
      ),
    ).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 },
        isSupportedEvidenceKey,
      ),
    ).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");
  });
});