Add paste web front page v2 (Bootstrap)

Separate the web file into submodule

Signed-off-by: Joe Ma <rikkaneko23@gmail.com>

web/v2/js/paste.js

@@ -0,0 +1,167 @@
+/*
+ * This file is part of paste.
+ * Copyright (c) 2023 Joe Ma <rikkaneko23@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+let input_div = {
+  file: null,
+  text: null,
+  url: null,
+};
+
+let inputs = {
+  file: null,
+  text: null,
+  url: null,
+};
+
+let selected_type = 'file';
+
+function validate_url(path) {
+  let url;
+  try {
+    url = new URL(path);
+  } catch (_) {
+    return false;
+  }
+  return url.protocol === 'http:' || url.protocol === 'https:';
+}
+
+function show_pop_alert(message, alert_type = 'alert-primary') {
+  remove_pop_alert();
+  $('body').prepend(jQuery.parseHTML(
+      `<div class="alert ${alert_type} alert-dismissible position-absolute top-0 start-50 translate-middle-x outer" 
+            style="margin-top: 80px; max-width: 500px; width: 80%" id="pop_alert" role="alert"> \
+      <div>${message}</div> \
+      <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button> \
+      </div>`,
+  ));
+}
+
+function remove_pop_alert() {
+  const alert = $('#pop_alert');
+  if (alert.length)
+    alert.remove();
+}
+
+$(function () {
+  input_div.file = $('#file_upload_layout');
+  input_div.text = $('#text_input_layout');
+  input_div.url = $('#url_input_layout');
+  inputs.file = $('#file_upload');
+  inputs.text = $('#text_input');
+  inputs.url = $('#url_input');
+
+  let file_stat = $('#file_stats');
+  let title = $('#paste_title');
+  let char_count = $('#char_count');
+  let pass_input = $('#pass_input');
+  let show_pass_icon = $('#show_pass_icon');
+  let upload_button = $('#upload_button');
+  let url_validate_result = $('#url_validate_result');
+  let tos_btn = $('#tos_btn');
+
+  inputs.file.on('change', function () {
+    inputs.file.removeClass('is-invalid');
+    file_stat.removeClass('text-danger');
+    if (this.files[0] === undefined) {
+      file_stat.textContent = '0 bytes';
+      return;
+    }
+    let bytes = this.files[0]?.size ?? 0;
+    let size = bytes + ' bytes';
+    const units = ['KiB', 'MiB', 'GiB', 'TiB'];
+    for (let i = 0, approx = bytes / 1024; approx > 1; approx /= 1024, i++) {
+      size = approx.toFixed(3) + ' ' + units[i];
+    }
+    title.val(this.files[0]?.name || '');
+    file_stat.text(`${this.files[0]?.type || 'application/octet-stream'}, ${size}`);
+
+    // Check length
+    if (bytes > 10485760) {
+      inputs.file.addClass('is-invalid');
+      file_stat.addClass('text-danger');
+      file_stat.text('The uploaded file is larger than the 10 MB limit.');
+    }
+  });
+
+  inputs.text.on('input', function () {
+    inputs.text.removeClass('is-invalid');
+    char_count.removeClass('text-danger');
+    char_count.text(`${this.value.length} characters`);
+    if (this.value.length <= 0) {
+      inputs.text.addClass('is-invalid');
+      char_count.addClass('text-danger');
+      char_count.text('Input text cannot be empty.');
+    }
+  });
+
+  $('#show_pass_button').on('click', function () {
+    if (pass_input.attr('type') === 'password') {
+      pass_input.attr('type', 'text');
+      show_pass_icon.removeClass('bi-eye bi-eye-slash');
+      show_pass_icon.addClass('bi-eye');
+    } else if (pass_input.attr('type') === 'text') {
+      pass_input.attr('type', 'password');
+      show_pass_icon.removeClass('bi-eye bi-eye-slash');
+      show_pass_icon.addClass('bi-eye-slash');
+    }
+  });
+
+  inputs.url.on('input', function () {
+    inputs.url.removeClass('is-invalid');
+    url_validate_result.removeClass('text-danger');
+    if (!validate_url(this.value)) {
+      inputs.url.addClass('is-invalid');
+      url_validate_result.addClass('text-danger');
+      url_validate_result.text('Invalid URL');
+    }
+  });
+
+  upload_button.on('click', function () {
+    inputs[selected_type].trigger('input');
+    const form = $('#upload_form')[0];
+    const formdata = new FormData(form);
+    let content = {};
+    formdata.forEach((val, key) => {
+      content[key] = val;
+    });
+
+    if (inputs[selected_type].hasClass('is-invalid') || !(!!content.u?.size || !!content.u?.length)) {
+      show_pop_alert('Please check your upload file or content', 'alert-danger');
+      return false;
+    }
+
+    if (!tos_btn.prop('checked')) {
+      show_pop_alert('Please read the TOS before upload', 'alert-warning');
+      return false;
+    }
+
+    // TODO Upload to pb service
+    show_pop_alert('Paste created!', 'alert-success');
+  });
+});
+
+function select_input_type(name) {
+  selected_type = name;
+  Object.keys(input_div).forEach(key => {
+    input_div[key].collapse('hide');
+    inputs[key].prop('disabled', true);
+  });
+  input_div[name].collapse('show');
+  inputs[name].prop('disabled', false);
+  inputs[name].prop('required', true);
+}