import test from "node:test";
import assert from "node:assert/strict";

import {
  buildFallbackReleaseSummary,
  classifyCommit,
  normalizeSectionTitle,
  normalizeVersion,
  resolveChannel
} from "../../apps/desktop/scripts/generate-release-summary.mjs";
import {
  GITHUB_RELEASE_BODY_MAX_LENGTH,
  RELEASE_NOTES_TRUNCATION_NOTICE
} from "../../apps/desktop/scripts/lib/githubReleaseBody.mjs";
import { resolvePreviousReleaseTag } from "../../apps/desktop/scripts/lib/previousReleaseTag.mjs";
import {
  REVIEW_END,
  REVIEW_START,
  SECTION_END,
  SECTION_START,
  SUGGESTION_START,
  buildApprovedReleaseSummary,
  buildUpdatedReleaseBody
} from "../../apps/desktop/scripts/upsert-release-summary.mjs";
import { validateReleaseSummary } from "../../apps/desktop/scripts/validate-release-summary.mjs";

function validReleaseSummary(overrides = {}) {
  return {
    schemaVersion: "tutti.desktop.release.summary.v1",
    tag: "v1.2.4-rc.1",
    version: "1.2.4-rc.1",
    channel: "rc",
    prerelease: true,
    targetCommit: "0123456789abcdef",
    compare: { from: "v1.2.4-rc.0", range: "v1.2.4-rc.0..HEAD", to: "HEAD" },
    generatedAt: "2026-07-21T00:00:00.000Z",
    summarySource: "fallback",
    zh: {
      headline: "本次版本优化发布流程。",
      sections: [{ title: "发布与更新", items: ["验证候选版本。"] }],
      qaFocus: ["验证更新。"]
    },
    en: {
      headline: "This release improves the release flow.",
      sections: [
        { title: "Release and Updates", items: ["Validate the candidate."] }
      ],
      qaFocus: ["Verify updates."]
    },
    ...overrides
  };
}

test("desktop release summary classifies commit messages for human sections", () => {
  assert.equal(
    classifyCommit("abc1234 feat(update): add channel picker"),
    "功能变更"
  );
  assert.equal(
    classifyCommit("abc1234 fix(release): avoid rc latest"),
    "问题修复"
  );
  assert.equal(
    classifyCommit("abc1234 chore(release): update desktop workflow"),
    "发布与更新"
  );
});

test("desktop release summary maps technical headings to user-facing sections", () => {
  assert.equal(normalizeSectionTitle("核心功能与架构", "zh"), "功能变更");
  assert.equal(normalizeSectionTitle("后端与服务端改进", "zh"), "体验优化");
  assert.equal(
    normalizeSectionTitle("Core Features & Architecture", "en"),
    "Feature Updates"
  );
  assert.equal(
    normalizeSectionTitle("Backend & Service Enhancements", "en"),
    "Experience Improvements"
  );
});

test("desktop release summary resolves channel from version shape", () => {
  assert.equal(normalizeVersion("v1.2.4"), "1.2.4");
  assert.equal(normalizeVersion("tutti-desktop-v1.2.4-rc.1"), "1.2.4-rc.1");
  assert.equal(normalizeVersion("tutti-desktop-v1.2.4-beta.1"), "1.2.4-beta.1");
  assert.equal(resolveChannel({ version: "1.2.4" }), "stable");
  assert.equal(resolveChannel({ version: "1.2.4-rc.1" }), "rc");
  assert.equal(resolveChannel({ version: "1.2.4-beta.1" }), "beta");
});

test("GitHub release notes compare prereleases against the latest same-channel tag", () => {
  const previousTag = resolvePreviousReleaseTag({
    channel: "rc",
    tag: "v0.2.2-rc.9",
    tags: ["v0.2.2-rc.9", "v0.2.2-rc.8", "v0.2.2-beta.5", "v0.2.0"],
    version: "0.2.2-rc.9"
  });

  assert.equal(previousTag, "v0.2.2-rc.8");
});

test("GitHub release notes fall back to the latest stable tag", () => {
  const previousTag = resolvePreviousReleaseTag({
    channel: "beta",
    tag: "v0.3.0-beta.0",
    tags: ["v0.3.0-beta.0", "v0.2.2-rc.8", "v0.2.1", "v0.2.0"],
    version: "0.3.0-beta.0"
  });

  assert.equal(previousTag, "v0.2.1");
});

test("desktop release summary fallback emits zh and en sections", () => {
  const summary = buildFallbackReleaseSummary({
    commits: [
      "abc1234 feat(update): add release channel picker",
      "def5678 fix(release): keep rc out of latest metadata"
    ]
  });

  assert.equal(summary.source, "fallback");
  assert.match(summary.zh.headline, /桌面端/);
  assert.ok(summary.zh.sections.length >= 2);
  assert.ok(summary.en.sections.length >= 2);
});

test("desktop release summary creates editable review and replaceable suggestion sections", () => {
  const nextBody = buildUpdatedReleaseBody({
    existingBody: [
      "## What's Changed",
      "- Raw GitHub note",
      "",
      SECTION_START,
      "old summary",
      SECTION_END
    ].join("\n"),
    summary: {
      zh: {
        headline: "本次版本聚焦发布链路稳定性。",
        sections: [
          { title: "发布与更新", items: ["稳定包入口只指向正式版。"] }
        ],
        qaFocus: ["验证下载入口。"]
      },
      en: {
        headline: "This release focuses on release stability.",
        sections: [
          {
            title: "Release and Updates",
            items: ["Stable downloads only point to official releases."]
          }
        ],
        qaFocus: ["Verify the download entry."]
      }
    }
  });

  assert.equal(nextBody.match(new RegExp(REVIEW_START, "g"))?.length, 1);
  assert.equal(nextBody.match(new RegExp(SUGGESTION_START, "g"))?.length, 1);
  assert.match(nextBody, /本次版本聚焦发布链路稳定性/);
  assert.match(nextBody, /Stable downloads only point to official releases/);
  assert.match(nextBody, /Release Notes/);
  assert.doesNotMatch(nextBody, /QA Focus/);
  assert.doesNotMatch(nextBody, /Verify the download entry/);
  assert.match(nextBody, /Raw GitHub note/);
  assert.doesNotMatch(nextBody, /old summary/);
});

test("desktop release summary preserves human review when a candidate is rebuilt", () => {
  const humanReview = [
    REVIEW_START,
    "## Release Notes",
    "### 中文",
    "人工确认标题",
    "#### 问题修复",
    "- 人工确认内容",
    "### English",
    "Reviewed headline",
    "#### Bug Fixes",
    "- Reviewed item",
    REVIEW_END
  ].join("\n");
  const nextBody = buildUpdatedReleaseBody({
    existingBody: `${humanReview}\n\n## What's Changed\n- keep me`,
    summary: validReleaseSummary({
      zh: {
        headline: "新的机器建议",
        sections: [{ title: "功能变更", items: ["机器内容"] }],
        qaFocus: []
      }
    })
  });
  assert.match(nextBody, /人工确认内容/);
  assert.match(nextBody, /新的机器建议/);
  assert.match(nextBody, /keep me/);
});

test("approved summary is parsed from the human review instead of generated suggestions", () => {
  const body = buildUpdatedReleaseBody({
    existingBody: "",
    summary: validReleaseSummary()
  }).replace("验证候选版本。", "人工筛选后的更新内容");
  const approved = buildApprovedReleaseSummary({
    body,
    generatedSummary: validReleaseSummary(),
    reviewedAt: "2026-08-17T01:00:00.000Z"
  });
  assert.equal(approved.summarySource, "human-reviewed");
  assert.deepEqual(approved.zh.sections[0].items, ["人工筛选后的更新内容"]);
  assert.equal(approved.generatedAt, "2026-08-17T01:00:00.000Z");
});

test("approved summary accepts reviewed items written as plain Markdown lines", () => {
  const body = [
    REVIEW_START,
    "## Release Notes",
    "### 中文",
    "人工确认标题",
    "#### 功能变更",
    "默认开启快捷提示词管理",
    "支持会话分叉",
    "### English",
    "Reviewed headline",
    "#### Feature Changes",
    "Quick prompt management is enabled by default",
    "Conversation forking is supported",
    REVIEW_END
  ].join("\n");
  const approved = buildApprovedReleaseSummary({
    body,
    generatedSummary: validReleaseSummary()
  });

  assert.deepEqual(approved.zh.sections[0].items, [
    "默认开启快捷提示词管理",
    "支持会话分叉"
  ]);
  assert.deepEqual(approved.en.sections[0].items, [
    "Quick prompt management is enabled by default",
    "Conversation forking is supported"
  ]);
});

test("desktop release summary trims only generated notes at GitHub's body limit", () => {
  const oversizedNotes = [
    "## What's Changed",
    ...Array.from(
      { length: 2_000 },
      (_, index) => `- generated note ${index}: ${"x".repeat(80)}`
    )
  ].join("\n");
  const nextBody = buildUpdatedReleaseBody({
    existingBody: oversizedNotes,
    summary: validReleaseSummary({
      en: {
        headline: "A concise release summary.",
        sections: [{ title: "Bug Fixes", items: ["Kept releases reliable."] }],
        qaFocus: []
      }
    })
  });

  assert.ok(nextBody.length <= GITHUB_RELEASE_BODY_MAX_LENGTH);
  assert.match(nextBody, /A concise release summary/);
  assert.match(nextBody, /generated note 0:/);
  assert.doesNotMatch(nextBody, /generated note 1999:/);
  assert.ok(nextBody.includes(RELEASE_NOTES_TRUNCATION_NOTICE));
});

test("desktop release summary validator accepts a complete staged summary", () => {
  const summary = validReleaseSummary();
  assert.equal(
    validateReleaseSummary(summary, {
      tag: summary.tag,
      channel: summary.channel,
      targetCommit: summary.targetCommit
    }),
    summary
  );
});

test("desktop release summary validator accepts a human-reviewed summary", () => {
  assert.doesNotThrow(() =>
    validateReleaseSummary(
      validReleaseSummary({ summarySource: "human-reviewed" })
    )
  );
});

test("desktop release summary validator rejects inconsistent or incomplete summaries", () => {
  assert.throws(
    () => validateReleaseSummary(validReleaseSummary({ prerelease: false })),
    /prerelease flag/
  );
  assert.throws(
    () => validateReleaseSummary(validReleaseSummary({ en: { headline: "" } })),
    /en.headline/
  );
});