/**
 * AKSRT front-end article submit (write/post page).
 * Handles TinyMCE content, featured cover, pay box, draft/submit AJAX.
 *
 * @package AKSRT
 */
/* global notyf */
(function () {
  'use strict';

  var cfg = window.aksrtSubmitData || {};
  var i18n = cfg.i18n || {};
  var ajaxUrl = cfg.ajaxUrl || '/wp-admin/admin-ajax.php';
  var nonce = cfg.nonce || '';

  function qs(sel, root) {
    return (root || document).querySelector(sel);
  }

  function qsa(sel, root) {
    return Array.prototype.slice.call((root || document).querySelectorAll(sel));
  }

  function escapeHtml(value) {
    return String(value || '')
      .replace(/&/g, '&')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;')
      .replace(/'/g, '&#039;');
  }

  function getEditorContent() {
    if (window.tinymce) {
      var ed = window.tinymce.get('post_content');
      if (ed) {
        return ed.getContent();
      }
    }
    var ta = qs('#post_content') || qs('[name="post_content"]');
    return ta ? ta.value : '';
  }

  function serializeForm(form) {
    var data = {};
    var fd = new FormData(form);
    fd.forEach(function (value, key) {
      if (Object.prototype.hasOwnProperty.call(data, key)) {
        if (!Array.isArray(data[key])) {
          data[key] = [data[key]];
        }
        data[key].push(value);
      } else {
        data[key] = value;
      }
    });
    return data;
  }

  function toFormBody(obj) {
    var params = new URLSearchParams();
    function append(key, val) {
      if (val === undefined || val === null) {
        return;
      }
      if (Array.isArray(val)) {
        val.forEach(function (v) {
          append(key, v);
        });
        return;
      }
      if (typeof val === 'object') {
        Object.keys(val).forEach(function (k) {
          append(key + '[' + k + ']', val[k]);
        });
        return;
      }
      params.append(key, String(val));
    }
    Object.keys(obj).forEach(function (k) {
      append(k, obj[k]);
    });
    return params;
  }

  var App = {
    form: null,
    isDirty: false,
    isSubmitting: false,
    featured: { type: '', data: {} },
    featuredOptions: {},

    init: function () {
      this.form = document.getElementById('aksrt-submit-form');
      if (!this.form || this.form.getAttribute('data-aksrt-submit-ready') === '1') {
        return;
      }
      this.form.setAttribute('data-aksrt-submit-ready', '1');
      this.bindDirty();
      this.bindAutoHeight();
      this.bindSubmitButtons();
      this.bindDraftDelete();
      this.bindFeatured();
      this.bindPay();
      this.bindLeaveWarning();
      this.bindTagActive();
      this.loadFeaturedFromDom();
    },

    bindDirty: function () {
      var self = this;
      this.form.addEventListener('input', function () {
        self.isDirty = true;
        self.form.setAttribute('data-dirty', 'true');
      });
      if (window.tinymce) {
        var tryBind = function () {
          var ed = window.tinymce.get('post_content');
          if (ed) {
            ed.on('change keyup', function () {
              self.isDirty = true;
            });
          } else {
            setTimeout(tryBind, 400);
          }
        };
        tryBind();
      }
    },

    bindLeaveWarning: function () {
      var self = this;
      window.addEventListener('beforeunload', function (e) {
        if (self.isDirty && !self.isSubmitting && !window.post_is_save) {
          e.preventDefault();
          e.returnValue = i18n.confirmLeave || '';
        }
      });
    },

    bindAutoHeight: function () {
      qsa('[data-auto-height]').forEach(function (el) {
        var max = parseInt(el.getAttribute('data-max-height') || '78', 10);
        var resize = function () {
          el.style.height = 'auto';
          el.style.height = Math.min(el.scrollHeight, max) + 'px';
        };
        el.addEventListener('input', resize);
        resize();
      });
    },

    bindTagActive: function () {
      qsa('.aksrt-submit-tag input, .newpost-filter-tags input').forEach(function (input) {
        var sync = function () {
          var tag = input.closest('.aksrt-submit-tag, .tag-list');
          if (tag) {
            tag.classList.toggle('is-active', input.checked);
            tag.classList.toggle('active', input.checked);
          }
        };
        input.addEventListener('change', sync);
        sync();
      });
    },

    bindSubmitButtons: function () {
      var self = this;
      qsa('.aksrt-submit-btn', this.form).forEach(function (btn) {
        btn.addEventListener('click', function (e) {
          e.preventDefault();
          if (self.isSubmitting) {
            return;
          }
          self.submit(btn, btn.getAttribute('data-action') || 'posts_save');
        });
      });
      this.form.addEventListener('submit', function (e) {
        e.preventDefault();
      });
    },

    collectPayload: function (action) {
      var data = serializeForm(this.form);
      data.action = action === 'posts_draft' ? 'aksrt_save_draft' : 'aksrt_submit_post';
      data._nonce = nonce || data._nonce || '';
      data.post_content = getEditorContent();
      data.post_title = data.post_title || ((qs('#submit-title') && qs('#submit-title').value) || '');
      data.status = action === 'posts_draft' ? 'draft' : 'pending';
      data.submit_action = action;
      var featuredJson = qs('[data-featured-json]', this.form);
      if (featuredJson && featuredJson.value) {
        try {
          data.featured_data = JSON.parse(featuredJson.value);
        } catch (err) {
          data.featured_data = this.featured;
        }
      } else if (this.featured && this.featured.type) {
        data.featured_data = this.featured;
      }
      return data;
    },

    submit: function (btn, action) {
      var self = this;
      if (action !== 'posts_draft') {
        var captcha = window.AKSRTCaptcha;
        if (captcha && !btn.dataset.aksrtCaptchaReady) {
          captcha.run('front_submit', this.form).then(function (payload) {
            if (payload === null) return;
            btn.dataset.aksrtCaptchaReady = '1';
            self.submit(btn, action);
          }).catch(function () {
            captcha.reset('front_submit', self.form);
            notyf(i18n.error || '人机验证失败，请重试', 'danger');
          });
          return;
        }
        delete btn.dataset.aksrtCaptchaReady;
      }
      this.isSubmitting = true;
      var toastId = action === 'posts_draft'
        ? 'aksrt-front-submit-draft-toast'
        : 'aksrt-front-submit-publish-toast';
      var original = btn.innerHTML;
      btn.disabled = true;
      btn.innerHTML =
        '<i class="fa fas fa-spinner fa-spin"></i> ' +
        (action === 'posts_draft' ? i18n.saving || 'Saving...' : i18n.submitting || 'Submitting...');
      notyf(
        action === 'posts_draft' ? i18n.saving || '正在保存草稿…' : i18n.submitting || '正在提交文章…',
        'load',
        '',
        toastId
      );

      var payload = this.collectPayload(action);
      if (payload.featured_data && typeof payload.featured_data === 'object') {
        payload.featured_data = JSON.stringify(payload.featured_data);
      }

      fetch(ajaxUrl, {
        method: 'POST',
        credentials: 'same-origin',
        headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
        body: toFormBody(payload),
      })
        .then(function (r) {
          return r.json();
        })
        .then(function (res) {
          var ok = !!(res && res.success);
          var d = (res && (res.data || res)) || {};
          if (!ok) {
            throw new Error((d && d.message) || i18n.error || 'Error');
          }
          self.isDirty = false;
          window.post_is_save = true;
          if (d.posts_id || d.post_id) {
            var hid = self.form.querySelector('input[name="posts_id"]');
            if (hid) {
              hid.value = String(d.posts_id || d.post_id);
            }
          }
          if (d.time) {
            var timeEl = qs('.aksrt-submit-modified-time');
            if (timeEl) {
              timeEl.textContent = '';
              var timeBadge = document.createElement('span');
              timeBadge.className = 'badg';
              timeBadge.textContent = (i18n.lastSaved || '最后保存：') + d.time;
              timeEl.appendChild(timeBadge);
            }
          }
          if (d.url) {
            var view = qs('.aksrt-submit-view-btn');
            if (view) {
              view.textContent = '';
              var previewLink = document.createElement('a');
              previewLink.className = 'but c-blue';
              previewLink.target = '_blank';
              previewLink.rel = 'noopener';
              previewLink.href = String(d.url);
              var previewIcon = document.createElement('i');
              previewIcon.className = 'fa fas fa-file-alt';
              previewLink.appendChild(previewIcon);
              previewLink.appendChild(document.createTextNode(' ' + (i18n.preview || 'Preview')));
              view.appendChild(previewLink);
            }
          }
          notyf(
            d.message || (action === 'posts_draft' ? i18n.saved || '草稿已保存' : i18n.submitted || '投稿已提交'),
            'success',
            5,
            toastId
          );
          if (d.goto) {
            setTimeout(function () {
              window.location.href = d.goto;
            }, 1000);
            return;
          }
          if (d.reload) {
            setTimeout(function () {
              window.location.reload();
            }, 1000);
            return;
          }
          setTimeout(function () {
            btn.disabled = false;
            btn.innerHTML = original;
            self.isSubmitting = false;
          }, 300);
        })
        .catch(function (err) {
          notyf(err.message || i18n.error || '操作失败，请重试', 'danger', 5, toastId);
          btn.disabled = false;
          btn.innerHTML = original;
          self.isSubmitting = false;
        })
        .finally(function () {
          if (action !== 'posts_draft' && window.AKSRTCaptcha) {
            window.AKSRTCaptcha.reset('front_submit', self.form);
          }
        });
    },

    bindDraftDelete: function () {
      document.addEventListener('click', function (e) {
        var btn = e.target.closest('.aksrt-submit-drafts__delete');
        if (!btn) {
          return;
        }
        e.preventDefault();
        var id = btn.getAttribute('data-draft-id');
        if (!id) {
          return;
        }
        if (!window.confirm(i18n.confirmDelete || 'Delete?')) {
          return;
        }
        var toastId = 'aksrt-front-submit-delete-draft-toast';
        btn.disabled = true;
        notyf(i18n.deleting || '正在删除草稿…', 'load', '', toastId);
        fetch(ajaxUrl, {
          method: 'POST',
          credentials: 'same-origin',
          headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
          body: toFormBody({ action: 'aksrt_delete_draft', _nonce: nonce, draft_id: id }),
        })
          .then(function (r) {
            return r.json();
          })
          .then(function (res) {
            if (res && res.success) {
              var item = btn.closest('.aksrt-submit-drafts__item');
              if (item) {
                item.remove();
              }
              notyf((res.data && res.data.message) || i18n.deleted || '草稿已删除', 'success', 5, toastId);
            } else {
              btn.disabled = false;
              notyf((res && res.data && res.data.message) || i18n.error || '删除失败', 'danger', 5, toastId);
            }
          })
          .catch(function () {
            btn.disabled = false;
            notyf(i18n.error || '网络错误，请重试', 'danger', 5, toastId);
          });
      });
    },

    loadFeaturedFromDom: function () {
      var box = qs('.featured-edit, .aksrt-submit-featured');
      if (!box) {
        return;
      }
      var raw = box.getAttribute('data-featured-args');
      if (!raw) {
        return;
      }
      try {
        var args = JSON.parse(raw);
        if (args && args.type) {
          this.featured = { type: args.type, data: args.data || {} };
        }
        this.featuredOptions = (args && args.options) || {};
      } catch (e) {}
    },

    setFeatured: function (type, data) {
      this.featured = { type: type || '', data: data || {} };
      var jsonInput = qs('[data-featured-json]');
      if (jsonInput) {
        jsonInput.value = JSON.stringify(this.featured);
      }
      this.renderFeaturedPreview();
      this.isDirty = true;
    },

    destroyFeaturedPlayer: function (preview) {
      var old = qs('.new-dplayer', preview);
      if (!old || !window.jQuery) {
        return;
      }
      var dp = window.jQuery(old).data('dplayer');
      if (dp) {
        if (typeof dp.pause === 'function') {
          dp.pause();
        }
        if (typeof dp.destroy === 'function') {
          dp.destroy();
        }
      }
    },

    renderFeaturedPreview: function () {
      var preview = qs('[data-featured-preview]');
      if (!preview) {
        return;
      }
      var t = this.featured.type;
      var d = this.featured.data || {};
      var box = qs('.featured-edit');
      if (box) {
        box.classList.remove('featured-loaded', 'image', 'slide', 'video');
        if (t && t !== 'close') {
          box.classList.add('featured-loaded', t);
        }
      }
      var html = '';
      if (t === 'image' && d.url) {
        html = '<img src="' + escapeHtml(d.url) + '" alt="">';
      } else if (t === 'slide' && Array.isArray(d) && d[0] && d[0].url) {
        // 与参考主题一致：幻灯片封面渲染真实 swiper，由 auto_fun 里的 new_swiper 初始化。
        var slideImgs = d
          .filter(function (item) { return item && item.url; })
          .map(function (item) {
            return '<div class="swiper-slide"><img src="' + escapeHtml(item.url) + '" alt=""></div>';
          })
          .join('');
        html =
          '<div class="new-swiper scale-height" data-loop="true" data-autoplay="true" data-interval="2000" style="--scale-height:50%;">' +
          '<div class="swiper-wrapper">' + slideImgs + '</div>' +
          '<div class="swiper-button-prev"></div>' +
          '<div class="swiper-button-next"></div>' +
          '<div class="swiper-pagination"></div>' +
          '</div>';
      } else if (t === 'video') {
        html =
          '<div class="new-dplayer dplayer-scale-height" style="--scale-height:50%;" video-url="' +
          escapeHtml(d.url || '') +
          '" video-pic="' +
          escapeHtml(d.pic || '') +
          '"><div class="graphic" style="padding-bottom:50%;">' +
          '<div class="abs-center text-center"><i class="fa fas fa-play-circle fa-4x muted-3-color opacity5" aria-hidden="true"></i></div>' +
          '</div></div>';
      }
      this.destroyFeaturedPlayer(preview);
      preview.innerHTML = html;
      if ((t === 'video' || t === 'slide') && typeof window.auto_fun === 'function') {
        window.auto_fun();
      }
      var clearBtn = qs('[data-featured-action="close"]');
      if (clearBtn) {
        clearBtn.hidden = !t || t === 'close';
      }
    },

    openMediaPicker: function (options) {
      if (!window.AksrtSubmitMedia || typeof window.AksrtSubmitMedia.open !== 'function') {
        notyf(i18n.mediaPickerUnavailable || '媒体选择器加载失败，请刷新页面后重试', 'danger');
        return false;
      }
      window.AksrtSubmitMedia.open(options);
      return true;
    },

    bindFeatured: function () {
      var self = this;
      var box = qs('.featured-edit, .aksrt-submit-featured');
      if (!box) {
        return;
      }
      box.addEventListener('click', function (e) {
        var btn = e.target.closest('[data-featured-action]');
        if (!btn) {
          return;
        }
        e.preventDefault();
        var act = btn.getAttribute('data-featured-action');
        if (act === 'close') {
          self.setFeatured('close', {});
          return;
        }
        if (act === 'image') {
          // 与服务端 featured 校验对齐：多选（或仅有幻灯片权限时的单选）存为幻灯片封面，其余存为图片封面。
          var coverOptions = self.featuredOptions || {};
          var slideEnabled = !!coverOptions.slide;
          var imageAllowed = !!coverOptions.image;
          self.openMediaPicker({
            type: 'image',
            multiple: slideEnabled,
            maxItems: slideEnabled ? 30 : 1,
            allowExternal: false,
            onSelect: function (items) {
              var list = Array.isArray(items) ? items : [items];
              var slides = [];
              list.forEach(function (item) {
                if (!item) return;
                var url = item.url || '';
                var id = item.attachment_id || item.id || 0;
                if (url || id) slides.push({ url: url, id: id });
              });
              if (!slides.length) return;
              if (slides.length > 1 || (slideEnabled && !imageAllowed)) {
                self.setFeatured('slide', slides);
                return;
              }
              self.setFeatured('image', slides[0]);
            },
          });
          return;
        }
        if (act === 'video_pic') {
          var current = self.featured;
          if (current.type !== 'video' || !current.data || !current.data.url) {
            return;
          }
          self.openMediaPicker({
            type: 'image',
            multiple: false,
            allowExternal: false,
            title: i18n.setVideoCoverTitle || '为视频设置封面',
            onSelect: function (cover) {
              self.setFeatured('video', {
                url: current.data.url,
                pic: cover && cover.url ? cover.url : '',
                pic_id: cover ? (cover.attachment_id || cover.id || 0) : 0,
                id: current.data.id || 0,
              });
            },
          });
          return;
        }
        if (act === 'video') {
          self.openMediaPicker({
            type: 'video',
            multiple: false,
            allowExternal: true,
            allowEmbed: false,
            onSelect: function (item) {
              if (!item || !item.url) return;
              var video = {
                url: item.url,
                pic: '',
                pic_id: 0,
                id: item.attachment_id || item.id || 0,
              };
              self.setFeatured('video', video);
              window.setTimeout(function () {
                self.openMediaPicker({
                  type: 'image',
                  multiple: false,
                  allowExternal: false,
                  title: i18n.setVideoCoverTitle || '为视频设置封面',
                  onSelect: function (cover) {
                    self.setFeatured('video', {
                      url: video.url,
                      pic: cover && cover.url ? cover.url : '',
                      pic_id: cover ? (cover.attachment_id || cover.id || 0) : 0,
                      id: video.id,
                    });
                  },
                });
              }, 0);
            },
          });
        }
      });
    },

    bindPay: function () {
      var box = qs('[data-pay-box]');
      if (!box) {
        return;
      }
      var toggle = qs('[data-pay-toggle]', box);
      var fields = qs('[data-pay-fields]', box);
      var offHint = qs('[data-pay-off-hint]', box);
      var modoInput = qs('[data-pay-modo-input]', box);
      var cash = qs('[data-pay-cash]', box);
      var points = qs('[data-pay-points]', box);

      function syncToggle() {
        var on = toggle && toggle.checked;
        if (fields) {
          fields.hidden = !on;
        }
        if (offHint) {
          offHint.hidden = !!on;
        }
      }
      if (toggle) {
        toggle.addEventListener('change', syncToggle);
      }
      syncToggle();

      qsa('[data-pay-modo]', box).forEach(function (btn) {
        btn.addEventListener('click', function () {
          var v = btn.getAttribute('data-pay-modo') || '0';
          if (modoInput) {
            modoInput.value = v;
          }
          qsa('[data-pay-modo]', box).forEach(function (b) {
            b.classList.toggle('active', b === btn);
          });
          if (cash) {
            cash.hidden = v === 'points';
          }
          if (points) {
            points.hidden = v !== 'points';
          }
        });
      });

      window.aksrtSubmitPayDownloads.init({
        root: box,
        notify: notyf,
        markDirty: function () {
          App.isDirty = true;
          App.form.setAttribute('data-dirty', 'true');
        },
      });
    },

  };

  jQuery(document).off('auto_fun.aksrt-front-submit').on('auto_fun.aksrt-front-submit', function () { App.init(); });
})();