document.addEventListener("DOMContentLoaded", function () {
  const firebaseConfig = {
    apiKey: "AIzaSyBH95XOOxhQJkrgPEQcv3M8afwk9AiTM50",
    authDomain: "gachaheaven-270f7.firebaseapp.com",
    projectId: "gachaheaven-270f7",
    storageBucket: "gachaheaven-270f7.firebasestorage.app",
    messagingSenderId: "127155090057",
    appId: "1:127155090057:web:63397ea395e52fe7418c58",
    measurementId: "G-WX0NQHBMRN"
  };

  if (!firebase.apps.length) {
    firebase.initializeApp(firebaseConfig);
  }

  const db = firebase.firestore();

  const form = document.getElementById("applyForm");
  const agree = document.getElementById("agree");

  if (!form || !agree) return;

  const btn = form.querySelector(".apply_btn");

  ["tel1", "tel2", "tel3"].forEach(function (id) {
    const input = document.getElementById(id);
    if (!input) return;

    input.addEventListener("input", function () {
      this.value = this.value.replace(/[^0-9]/g, "");
    });
  });

  form.addEventListener("submit", async function (e) {
    e.preventDefault();

    if (!agree.checked) {
      alert("개인정보 수집 및 이용에 동의해 주세요.");
      return;
    }

    const inqType = document.getElementById("inqType").value.trim();
    const userName = document.getElementById("userName").value.trim();
    const tel1 = document.getElementById("tel1").value.trim();
    const tel2 = document.getElementById("tel2").value.trim();
    const tel3 = document.getElementById("tel3").value.trim();
    const region = document.getElementById("region").value.trim();
    const source = document.getElementById("source").value.trim();

    if (!inqType || !userName || !tel1 || !tel2 || !tel3 || !region || !source) {
      alert("필수 항목을 모두 입력해 주세요.");
      return;
    }

    const phone = tel1 + "-" + tel2 + "-" + tel3;

    try {
      btn.disabled = true;
      btn.textContent = "\uC811\uC218 \uC911...";

      await db.collection("consultations").add({
        inquiryType: inqType,
        name: userName,
        phone: phone,
        region: region,
        source: source,
        agreedToPrivacy: true,
        createdAt: firebase.firestore.FieldValue.serverTimestamp()
      });

      alert("\uC811\uC218\uAC00 \uC644\uB8CC\uB418\uC5C8\uC2B5\uB2C8\uB2E4.");
      form.reset();
    } catch (error) {
      console.error("Firestore 저장 실패:", error);
      alert("\uC811\uC218 \uC911 \uC624\uB958\uAC00 \uBC1C\uC0DD\uD588\uC2B5\uB2C8\uB2E4. \uC7A0\uC2DC \uD6C4 \uB2E4\uC2DC \uC2DC\uB3C4\uD574 \uC8FC\uC138\uC694.");
    } finally {
      btn.disabled = false;
      btn.textContent = "\uC0C1\uB2F4\uBB38\uC758 \uC2E0\uCCAD\uC644\uB8CC";
    }
  });
});