import { describe, expect, test } from "bun:test";

import {
  answersByTemplateIndex,
  normalizeSubmissionAnswers,
  submissionUpdateText,
  type SubmissionQuestion,
} from "@/lib/submission-intake";

const questions: SubmissionQuestion[] = [
  {
    id: "q-name",
    type: "text",
    label: "<b>Name</b>",
    required: true,
    options: [],
    allowOther: false,
  },
  {
    id: "q-skill",
    type: "radio",
    label: "Skill",
    required: true,
    options: ["Build", "Fight"],
    allowOther: true,
  },
  {
    id: "q-tags",
    type: "checkbox",
    label: "Tags",
    required: false,
    options: ["Alpha", "Beta"],
    allowOther: true,
  },
];

describe("Submission intake", () => {
  test("normalizes answers into stored and display values", () => {
    const normalized = normalizeSubmissionAnswers(questions, [
      { questionId: "q-name", value: "Erika" },
      { questionId: "q-skill", value: "Custom skill" },
      { questionId: "q-tags", value: ["Alpha", "Gamma"] },
    ]);

    expect(normalized).toEqual([
      { questionId: "q-name", value: "Erika", imageCdnId: null, displayValue: "Erika" },
      { questionId: "q-skill", value: "Custom skill", imageCdnId: null, displayValue: "Custom skill" },
      { questionId: "q-tags", value: '["Alpha","Gamma"]', imageCdnId: null, displayValue: "Alpha, Gamma" },
    ]);
  });

  test("validates required image-only and text plus image answers", () => {
    const imageQuestions: SubmissionQuestion[] = [
      {
        id: "q-image",
        type: "text",
        label: "Screenshot",
        required: false,
        options: [],
        allowOther: false,
        imageAnswerMode: "required",
      },
      {
        id: "q-text-image",
        type: "textarea",
        label: "Proof",
        required: true,
        options: [],
        allowOther: false,
        imageAnswerMode: "required",
      },
    ];

    expect(() => normalizeSubmissionAnswers(imageQuestions, [
      { questionId: "q-image", value: "" },
      { questionId: "q-text-image", value: "Details", imageCdnId: "img-2" },
    ])).toThrow("จำเป็นต้องอัปโหลดรูปสำหรับ “Screenshot”");

    expect(normalizeSubmissionAnswers(imageQuestions, [
      { questionId: "q-image", value: "", imageCdnId: "img-1" },
      { questionId: "q-text-image", value: "Details", imageCdnId: "img-2" },
    ])).toEqual([
      { questionId: "q-image", value: "", imageCdnId: "img-1", displayValue: "" },
      { questionId: "q-text-image", value: "Details", imageCdnId: "img-2", displayValue: "Details" },
    ]);
  });

  test("rejects answers for questions outside the Form", () => {
    expect(() => normalizeSubmissionAnswers(questions, [
      { questionId: "q-name", value: "Erika" },
      { questionId: "missing", value: "Injected" },
    ])).toThrow("ข้อมูลคำตอบไม่ตรงกับแบบฟอร์ม");
  });

  test("rejects duplicate answers for one Question", () => {
    expect(() => normalizeSubmissionAnswers(questions, [
      { questionId: "q-name", value: "Erika" },
      { questionId: "q-name", value: "Duplicate" },
    ])).toThrow("ข้อมูลคำตอบไม่ตรงกับแบบฟอร์ม");
  });

  test("rejects unresolved Other answer placeholders", () => {
    expect(() => normalizeSubmissionAnswers(questions, [
      { questionId: "q-name", value: "Erika" },
      { questionId: "q-skill", value: "__OTHER__" },
    ])).toThrow("โปรดระบุคำตอบสำหรับ “Skill”");
  });

  test("maps answers by Question order for webhook templates", () => {
    const normalized = normalizeSubmissionAnswers(questions, [
      { questionId: "q-name", value: "Erika" },
      { questionId: "q-skill", value: "Build" },
      { questionId: "q-tags", value: ["Beta"] },
    ]);

    expect(answersByTemplateIndex(questions, normalized)).toEqual({
      "1": "Erika",
      "2": "Build",
      "3": "Beta",
    });
  });

  test("renders Update text from stored old answers", () => {
    const normalized = normalizeSubmissionAnswers(questions, [
      { questionId: "q-name", value: "Erika" },
      { questionId: "q-skill", value: "Fight" },
      { questionId: "q-tags", value: ["Alpha", "Gamma"] },
    ]);

    expect(submissionUpdateText(questions, normalized, {
      "q-name": "Erika",
      "q-skill": "Build",
      "q-tags": '["Alpha"]',
    })).toBe([
      "**Skill**: `Build` ➡️ `Fight`",
      "**Tags**: `Alpha` ➡️ `Alpha, Gamma`",
    ].join("\n"));
  });

  test("renders a stable no-change Update message", () => {
    const normalized = normalizeSubmissionAnswers(questions, [
      { questionId: "q-name", value: "Erika" },
      { questionId: "q-skill", value: "Build" },
      { questionId: "q-tags", value: ["Alpha"] },
    ]);

    expect(submissionUpdateText(questions, normalized, {
      "q-name": "Erika",
      "q-skill": "Build",
      "q-tags": '["Alpha"]',
    })).toBe("No changes made.");
  });
});