// Blog Management JavaScript

let postsData = [];
let postModal;

document.addEventListener("DOMContentLoaded", function () {
  postModal = new bootstrap.Modal(document.getElementById("postModal"));
  checkAuth().then((authenticated) => {
    if (authenticated) {
      loadPosts();
    }
  });

  const urlParams = new URLSearchParams(window.location.search);
  if (urlParams.get("action") === "create") {
    showCreatePost();
  }

  // Auto-generate slug from title
  document.getElementById("postTitle")?.addEventListener("input", function () {
    if (!document.getElementById("postId").value) {
      document.getElementById("postSlug").value = slugify(this.value);
    }
  });
});

async function loadPosts() {
  try {
    const response = await fetch("/api/admin/blog", { credentials: "include" });
    const data = await response.json();
    if (data.success) {
      postsData = data.posts;
      renderPosts(postsData);
    }
  } catch (error) {
    console.error("Failed to load posts:", error);
  }
}

function renderPosts(posts) {
  const tbody = document.getElementById("postsTableBody");
  if (posts.length === 0) {
    tbody.innerHTML = `
      <tr><td colspan="7" class="text-center p-4">
        <i class="bi bi-inbox" style="font-size: 3rem; color: #ccc;"></i>
        <p class="mt-3 text-muted">No blog posts found</p>
        <button class="btn btn-primary" onclick="showCreatePost()">
          <i class="bi bi-plus-circle"></i> Create Your First Post
        </button>
      </td></tr>`;
    return;
  }

  tbody.innerHTML = posts
    .map(
      (p) => `
    <tr>
      <td>${p.id}</td>
      <td><strong>${escapeHtml(p.title)}</strong></td>
      <td><code>${escapeHtml(p.slug)}</code></td>
      <td>${escapeHtml((p.excerpt || "").substring(0, 40))}...</td>
      <td><span class="badge ${
        p.ispublished ? "badge-success" : "badge-warning"
      }">
        ${p.ispublished ? "Published" : "Draft"}</span></td>
      <td>${formatDate(p.createdat)}</td>
      <td>
        <button class="btn btn-sm btn-info" onclick="editPost(${p.id})">
          <i class="bi bi-pencil"></i>
        </button>
        <button class="btn btn-sm btn-danger" onclick="deletePost(${
          p.id
        }, '${escapeHtml(p.title)}')">
          <i class="bi bi-trash"></i>
        </button>
      </td>
    </tr>`
    )
    .join("");
}

function filterPosts() {
  const searchTerm = document.getElementById("searchInput").value.toLowerCase();
  const filtered = postsData.filter(
    (p) =>
      p.title.toLowerCase().includes(searchTerm) ||
      p.slug.toLowerCase().includes(searchTerm)
  );
  renderPosts(filtered);
}

function showCreatePost() {
  document.getElementById("modalTitle").textContent = "Create Blog Post";
  document.getElementById("postForm").reset();
  document.getElementById("postId").value = "";
  document.getElementById("postPublished").checked = false;
  postModal.show();
}

async function editPost(id) {
  try {
    const response = await fetch(`/api/admin/blog/${id}`, {
      credentials: "include",
    });
    const data = await response.json();
    if (data.success) {
      const post = data.post;
      document.getElementById("modalTitle").textContent = "Edit Blog Post";
      document.getElementById("postId").value = post.id;
      document.getElementById("postTitle").value = post.title;
      document.getElementById("postSlug").value = post.slug;
      document.getElementById("postExcerpt").value = post.excerpt || "";
      document.getElementById("postContent").value = post.content || "";
      document.getElementById("postMetaTitle").value = post.metatitle || "";
      document.getElementById("postMetaDescription").value =
        post.metadescription || "";
      document.getElementById("postPublished").checked = post.ispublished;
      postModal.show();
    }
  } catch (error) {
    console.error("Failed to load post:", error);
    showError("Failed to load post details");
  }
}

async function savePost() {
  const id = document.getElementById("postId").value;
  const formData = {
    title: document.getElementById("postTitle").value,
    slug: document.getElementById("postSlug").value,
    excerpt: document.getElementById("postExcerpt").value,
    content: document.getElementById("postContent").value,
    metatitle: document.getElementById("postMetaTitle").value,
    metadescription: document.getElementById("postMetaDescription").value,
    ispublished: document.getElementById("postPublished").checked,
  };

  if (!formData.title || !formData.slug || !formData.content) {
    showError("Please fill in all required fields");
    return;
  }

  try {
    const url = id ? `/api/admin/blog/${id}` : "/api/admin/blog";
    const method = id ? "PUT" : "POST";
    const response = await fetch(url, {
      method: method,
      headers: { "Content-Type": "application/json" },
      credentials: "include",
      body: JSON.stringify(formData),
    });

    const data = await response.json();
    if (data.success) {
      showSuccess(
        id ? "Post updated successfully" : "Post created successfully"
      );
      postModal.hide();
      loadPosts();
    } else {
      showError(data.message || "Failed to save post");
    }
  } catch (error) {
    console.error("Failed to save post:", error);
    showError("Failed to save post");
  }
}

async function deletePost(id, title) {
  if (!confirm(`Are you sure you want to delete "${title}"?`)) return;
  try {
    const response = await fetch(`/api/admin/blog/${id}`, {
      method: "DELETE",
      credentials: "include",
    });
    const data = await response.json();
    if (data.success) {
      showSuccess("Post deleted successfully");
      loadPosts();
    } else {
      showError(data.message || "Failed to delete post");
    }
  } catch (error) {
    console.error("Failed to delete post:", error);
    showError("Failed to delete post");
  }
}

function slugify(text) {
  return text
    .toLowerCase()
    .replace(/[^\w\s-]/g, "")
    .replace(/[\s_-]+/g, "-")
    .replace(/^-+|-+$/g, "");
}

async function logout() {
  try {
    const response = await fetch("/api/admin/logout", {
      method: "POST",
      credentials: "include",
    });
    if (response.ok) window.location.href = "/admin/login.html";
  } catch (error) {
    console.error("Logout failed:", error);
  }
}

function escapeHtml(text) {
  const map = {
    "&": "&amp;",
    "<": "&lt;",
    ">": "&gt;",
    '"': "&quot;",
    "'": "&#039;",
  };
  return text.replace(/[&<>"']/g, (m) => map[m]);
}

function formatDate(dateString) {
  return new Date(dateString).toLocaleDateString("en-US", {
    year: "numeric",
    month: "short",
    day: "numeric",
  });
}

function showSuccess(message) {
  alert(message);
}
function showError(message) {
  alert("Error: " + message);
}