<template>
  <div v-if="protocol.id" class="task-protocol">
    <div ref="header" class="task-section-header ml-[-1rem] w-[calc(100%_+_2rem)] px-4 bg-sn-white sticky top-0 transition" v-if="!inRepository">
      <div class="portocol-header-left-part grow" :class="{'overflow-hidden': headerSticked && moduleName}">
        <template v-if="headerSticked && moduleName">
          <i class="sn-icon sn-icon-navigator sci--layout--navigator-open cursor-pointer p-1.5 border rounded border-sn-light-grey mr-4"></i>
          <div @click="scrollTop" class="task-section-title  min-w-[5rem] cursor-pointer" :title="moduleName">
            <h2 class="truncate leading-6">{{ moduleName }}</h2>
          </div>
        </template>
        <template v-else>
          <a class="task-section-caret"
            tabindex="0"
            role="button"
            data-toggle="collapse"
            href="#protocol-content"
            aria-expanded="true"
            aria-controls="protocol-content"
            data-e2e="e2e-IC-task-protocol-visibilityToggle"
          >
            <i class="sn-icon sn-icon-right"></i>
            <div class="task-section-title truncate">
              <h2 data-e2e="e2e-TX-task-protocol-sectionTitle">{{ i18n.t('Protocol') }}</h2>
            </div>
          </a>
        </template>
        <div :class="{'hidden': headerSticked}">
          <div class="my-module-protocol-status">
            <!-- protocol status dropdown gets mounted here -->
          </div>
        </div>
      </div>
      <div class="actions-block">
        <div class="protocol-buttons-group shrink-0 bg-sn-white">
          <a v-if="urls.add_step_url"
             class="btn btn-secondary icon-btn xl:!px-4"
             :title="i18n.t('protocols.steps.new_step_title')"
             @keyup.enter="addStep(steps.length)"
             @click="addStep(steps.length)"
             tabindex="0"
             data-e2e="e2e-BT-task-protocol-newStep">
              <span class="sn-icon sn-icon-new-task" aria-hidden="true"></span>
              <span class="tw-hidden xl:inline">{{ i18n.t("protocols.steps.new_step") }}</span>
          </a>
          <template v-if="steps.length > 0">
            <button
              :title="i18n.t('protocols.steps.collapse_label')"
              v-if="!stepCollapsed"
              class="btn btn-secondary icon-btn xl:!px-4"
              @click="collapseSteps"
              tabindex="0"
              data-e2e="e2e-BT-task-protocol-collapseAll"
            >
              <i class="sn-icon sn-icon-collapse-all"></i>
              <span class="tw-hidden xl:inline">{{ i18n.t("protocols.steps.collapse_label") }}</span>
            </button>
            <button v-else
              :title="i18n.t('protocols.steps.expand_label')"
              class="btn btn-secondary icon-btn xl:!px-4"
              @click="expandSteps"
              tabindex="0"
              data-e2e="e2e-BT-task-protocol-expandAll"
            >
              <i class="sn-icon sn-icon-expand-all"></i>
              <span class="tw-hidden xl:inline">{{ i18n.t("protocols.steps.expand_label") }}</span>
            </button>
          </template>
          <ProtocolOptions
            v-if="protocol.attributes && protocol.attributes.urls"
            :protocol="protocol"
            :inRepository="inRepository"
            @protocol:delete_steps="deleteSteps"
            @protocol:add_protocol_steps="addSteps"
            :canDeleteSteps="steps.length > 0 && urls.delete_steps_url !== null"
          />
          <button
            class="btn btn-light icon-btn"
            data-toggle="modal"
            data-target="#print-protocol-modal"
            tabindex="0"
            data-e2e="e2e-BT-task-protocol-print"
          >
            <span class="sn-icon sn-icon-printer" aria-hidden="true"></span>
          </button>
          <a v-if="steps.length > 0 && urls.reorder_steps_url"
            class="btn btn-light icon-btn"
            data-toggle="modal"
            @click="startStepReorder"
            @keyup.enter="startStepReorder"
            :class="{'disabled': steps.length == 1}"
            tabindex="0"
            data-e2e="e2e-BT-task-protocol-reorderSteps"
          >
              <i class="sn-icon sn-icon-sort" aria-hidden="true"></i>
          </a>
        </div>
      </div>
    </div>
    <div
      id="protocol-content"
      class="protocol-content collapse in"
      aria-expanded="true"
      data-e2e="e2e-CO-task-protocol-content"
    >
      <div class="sci-divider" v-if="!inRepository"></div>
      <div class="mb-4">
        <div class="protocol-name mt-4" v-if="!inRepository">
          <InlineEdit
            v-if="urls.update_protocol_name_url"
            :value="protocol.attributes.name"
            :characterLimit="255"
            :placeholder="i18n.t('my_modules.protocols.protocol_status_bar.enter_name')"
            :allowBlank="!inRepository"
            :attributeName="`${i18n.t('Protocol')} ${i18n.t('name')}`"
            @update="updateName"
            :dataE2e="'task-protocol-title'"
          />
          <span v-else>
            {{ protocol.attributes.name }}
          </span>
        </div>
        <ProtocolMetadata v-if="protocol.attributes && protocol.attributes.in_repository" :protocol="protocol" @update="updateProtocol" @publish="startPublish"/>
        <div :class="inRepository ? 'protocol-section protocol-information' : ''">
          <div v-if="inRepository" id="protocol-description" class="protocol-section-header">
            <div class="protocol-description-container">
              <a class="protocol-section-caret"
                role="button"
                data-toggle="collapse"
                href="#protocol-description-container"
                aria-expanded="false"
                aria-controls="protocol-description-container">
                <i class="sn-icon sn-icon-right"></i>
                <span id="protocolDescriptionLabel" class="protocol-section-title" data-e2e="e2e-TX-protocolTemplates-protocolDescription-title">
                  <h2>
                    {{ i18n.t("protocols.header.protocol_description") }}
                  </h2>
                </span>
              </a>
            </div>
          </div>
          <div id="protocol-description-container"
            class="text-base content__text-container"
            :class=" inRepository ? 'protocol-description collapse in' : ''"
            data-e2e="e2e-IF-protocolTemplates-protocolDescription-content">
            <div v-if="urls.update_protocol_description_url">
              <Tinymce
                :value="protocol.attributes.description"
                :value_html="protocol.attributes.description_view"
                :placeholder="i18n.t('my_modules.protocols.protocol_status_bar.empty_description_edit_label')"
                :updateUrl="urls.update_protocol_description_url"
                :objectType="'Protocol'"
                :objectId="parseInt(protocol.id)"
                :fieldName="'protocol[description]'"
                :lastUpdated="protocol.attributes.updated_at"
                :assignableMyModuleId="protocol.attributes.assignable_my_module_id"
                :characterLimit="1000000"
                @update="updateDescription"
              />
            </div>
            <div v-else-if="protocol.attributes.description_view" v-html="wrappedTables" class="view-text-element"></div>
            <div v-else class="empty-protocol-description">
              {{ i18n.t("protocols.no_text_placeholder") }}
            </div>
          </div>
        </div>
      </div>
      <div :class="inRepository ? 'protocol-section protocol-steps-section protocol-information' : ''">
        <div v-if="inRepository" id="protocol-steps" class="protocol-section-header">
          <div class="protocol-steps-container w-full flex flex-row items-center justify-between">
            <a class="protocol-section-caret" role="button" data-toggle="collapse" href="#protocol-steps-container" aria-expanded="false" aria-controls="protocol-steps-container">
              <i class="sn-icon sn-icon-right"></i>
              <span id="protocolStepsLabel" class="protocol-section-title" data-e2e="e2e-TX-protocol-templateSteps-title">
                <h2>
                  {{ i18n.t("protocols.header.protocol_steps") }}
                </h2>
              </span>
            </a>
            <ProtocolOptions
              v-if="protocol.attributes && protocol.attributes.urls"
              :protocol="protocol"
              :inRepository="inRepository"
              @protocol:delete_steps="deleteSteps"
              @protocol:add_protocol_steps="addSteps"
              :canDeleteSteps="steps.length > 0 && urls.delete_steps_url !== null"
            />
          </div>
        </div>
        <div class="sci-divider my-4" v-if="!inRepository"></div>
        <div id="protocol-steps-container" :class=" inRepository ? 'protocol-steps collapse in' : ''">
          <div v-if="urls.add_step_url && inRepository" class="py-5 flex flex-row gap-8 justify-between">
            <a
              class="btn btn-secondary"
              :title="i18n.t('protocols.steps.new_step_title')"
              data-e2e="e2e-BT-protocol-templateSteps-newStepTop"
              @keyup.enter="addStep(steps.length)"
              @click="addStep(steps.length)"
              tabindex="0">
                <span class="sn-icon sn-icon-new-task" aria-hidden="true"></span>
                <span>{{ i18n.t("protocols.steps.new_step") }}</span>
            </a>
            <div v-if="steps.length > 0" class="flex justify-between items-center gap-4">
              <button @click="collapseSteps" class="btn btn-secondary flex px-4" tabindex="0" data-e2e="e2e-BT-protocol-templateSteps-collapse">
                <i class="sn-icon sn-icon-collapse-all"></i>
                {{ i18n.t("protocols.steps.collapse_label") }}
              </button>
              <button @click="expandSteps" class="btn btn-secondary flex px-4" tabindex="0" data-e2e="e2e-BT-protocol-templateSteps-expand">
                <i class="sn-icon sn-icon-expand-all"></i>
                {{ i18n.t("protocols.steps.expand_label") }}
              </button>
              <a v-if="steps.length > 0 && urls.reorder_steps_url"
                class="btn btn-light icon-btn"
                data-toggle="modal"
                data-e2e="e2e-BT-protocol-templateSteps-reorder"
                @click="startStepReorder"
                @keyup.enter="startStepReorder"
                :class="{'disabled': steps.length == 1}"
                tabindex="0" >
              <i class="sn-icon sn-icon-sort" aria-hidden="true"></i>
          </a>
          </div>
          </div>
          <div :class="{
              'tw-hidden': loadingOverlay
            }"
            class="protocol-steps pb-8"
          >
            <div v-for="(step, index) in steps" :key="step.id" class="step-block">
              <div v-if="index > 0 && urls.add_step_url" class="insert-step" @click="addStep(index)" data-e2e="e2e-BT-protocol-templateSteps-insertStep">
                <i class="sn-icon sn-icon-new-task"></i>
                <span class="mr-3">{{ i18n.t("protocols.steps.add_step") }}</span>
              </div>
              <Step
                ref="steps"
                :step.sync="steps[index]"
                @reorder="startStepReorder"
                :inRepository="inRepository"
                :stepToReload="stepToReload"
                :activeDragStep="activeDragStep"
                @step:delete="updateStepsPosition"
                @step:update="updateStep"
                @stepUpdated="refreshProtocolStatus"
                @step:insert="updateStepsPosition"
                @step:elements:loaded="stepToReload = null; elementsLoaded++"
                @step:move_element="reloadStep"
                @step:attachments:loaded="stepToReload = null; attachmentsLoaded++"
                @step:move_attachment="reloadStep"
                @step:drag_enter="dragEnter"
                @step:collapsed="checkStepsState"
                :reorderStepUrl="steps.length > 1 ? urls.reorder_steps_url : null"
                :userSettingsUrl="userSettingsUrl"
                :assignableMyModuleId="protocol.attributes.assignable_my_module_id"
              />
              <div v-if="(index === steps.length - 1) && urls.add_step_url" class="insert-step" @click="addStep(index + 1)" data-e2e="e2e-BT-protocol-templateSteps-insertStep">
                <i class="sn-icon sn-icon-new-task"></i>
                <span class="mr-3">{{ i18n.t("protocols.steps.add_step") }}</span>
              </div>
            </div>
            <div v-if="steps.length > 0 && urls.add_step_url && inRepository" class="py-5">
              <a
                class="btn btn-secondary"
                :title="i18n.t('protocols.steps.new_step_title')"
                data-e2e="e2e-BT-protocol-templateSteps-newStepBottom"
                @keyup.enter="addStep(steps.length)"
                @click="addStep(steps.length)"
                tabindex="0">
                  <span class="sn-icon sn-icon-new-task" aria-hidden="true"></span>
                  <span>{{ i18n.t("protocols.steps.new_step") }}</span>
              </a>
            </div>
          </div>
          <div v-if="loadingOverlay" class="text-center h-20 flex items-center justify-center">
            <div class="sci-loader"></div>
          </div>
        </div>
      </div>
    </div>
    <ReorderableItemsModal v-if="reordering"
      :title="i18n.t('protocols.reorder_steps.modal.title')"
      :items="steps"
      :includeNumbers="true"
      dataE2e="protocol-reorderSteps"
      @reorder="updateStepOrder"
      @close="closeStepReorderModal"
    />
    <PublishProtocol v-if="publishing"
      :protocol="protocol"
      @publish="publishProtocol"
      @cancel="closePublishModal"
    />
    <clipboardPasteModal v-if="showClipboardPasteModal"
                         :image="pasteImages"
                         :objects="steps"
                         :objectType="'step'"
                         :selectedObjectId="firstObjectInViewport()"
                         @files="uploadFilesToStep"
                         @cancel="showClipboardPasteModal = false"
    />
  </div>
</template>

<script>
import InlineEdit from '../shared/inline_edit.vue';
import Step from './step';
import ProtocolMetadata from './protocolMetadata';
import ProtocolOptions from './protocolOptions';
import Tinymce from '../shared/tinymce.vue';
import ReorderableItemsModal from '../shared/reorderable_items_modal.vue';
import PublishProtocol from './modals/publish_protocol.vue';
import clipboardPasteModal from '../shared/content/attachments/clipboard_paste_modal.vue';
import AssetPasteMixin from '../shared/content/attachments/mixins/paste.js';
import axios from '../../packs/custom_axios';
import UtilsMixin from '../mixins/utils.js';
import stackableHeadersMixin from '../mixins/stackableHeadersMixin';
import moduleNameObserver from '../mixins/moduleNameObserver';

export default {
  name: 'ProtocolContainer',
  props: {
    protocolUrl: {
      type: String,
      required: true
    }
  },
  components: {
    Step, InlineEdit, ProtocolOptions, Tinymce, ReorderableItemsModal, ProtocolMetadata, PublishProtocol, clipboardPasteModal
  },
  mixins: [UtilsMixin, stackableHeadersMixin, moduleNameObserver, AssetPasteMixin],
  computed: {
    wrappedTables() {
      return window.wrapTables(this.protocol.attributes.description_view);
    },
    inRepository() {
      return this.protocol.attributes.in_repository;
    },
    linked() {
      return this.protocol.attributes.linked;
    },
    urls() {
      return this.protocol.attributes.urls || {};
    }
  },
  data() {
    return {
      protocol: {
        attributes: {}
      },
      steps: [],
      reordering: false,
      publishing: false,
      stepToReload: null,
      activeDragStep: null,
      userSettingsUrl: null,
      stepCollapsed: false,
      anchorId: null,
      elementsLoaded: 0,
      attachmentsLoaded: 0,
      loadingOverlay: false
    };
  },
  created() {
    const urlParams = new URLSearchParams(window.location.search);
    this.anchorId = urlParams.get('step_id');

    if (this.anchorId) {
      this.loadingOverlay = true;
    }
  },
  watch: {
    elementsLoaded() {
      if (this.anchorId) {
        this.scrollToStep();
      }
    },
    attachmentsLoaded() {
      if (this.anchorId) {
        this.scrollToStep();
      }
    }
  },
  mounted() {
    this.userSettingsUrl = document.querySelector('meta[name="user-settings-url"]').getAttribute('content');
    $.get(this.protocolUrl, (result) => {
      this.protocol = result.data;
      this.$nextTick(() => {
        this.refreshProtocolStatus();
        if (!this.inRepository) {
          window.addEventListener('scroll', this.initStackableHeaders, false);
          this.initStackableHeaders();
        }
      });
      $.get(this.urls.steps_url, (result) => {
        this.steps = result.data;
      });
    });
  },
  beforeUnmount() {
    if (!this.inRepository) {
      window.removeEventListener('scroll', this.initStackableHeaders, false);
    }
  },
  methods: {
    scrollToStep() {
      if (this.elementsLoaded === this.steps.length && this.attachmentsLoaded === this.steps.length) {
        this.loadingOverlay = false;
        this.$nextTick(() => {
          if (this.anchorId) {
            const step = this.$refs.steps.find((child) => child.step?.id === this.anchorId);
            if (step) {
              step.$refs.stepContainer.scrollIntoView({ behavior: 'smooth', block: 'start' });
            }
            this.anchorId = null;
          }
        });
      }
    },
    getHeader() {
      return this.$refs.header;
    },
    reloadStep(step) {
      this.stepToReload = step;
    },
    checkStepsState() {
      this.stepCollapsed = this.$refs.steps.every((step) => step.isCollapsed);
    },
    collapseSteps() {
      $('.step-container .collapse').collapse('hide');
      this.updateStepStateSettings(true);
      this.$refs.steps.forEach((step) => step.isCollapsed = true);
      this.stepCollapsed = true;
    },
    expandSteps() {
      $('.step-container .collapse').collapse('show');
      this.updateStepStateSettings(false);
      this.$refs.steps.forEach((step) => step.isCollapsed = false);
      this.stepCollapsed = false;
    },
    updateStepStateSettings(newState) {
      const updatedData = this.steps.reduce((acc, currentStep) => {
        acc[currentStep.id] = newState;
        return acc;
      }, {});

      this.steps = this.steps.map((step) => ({
        ...step,
        attributes: {
          ...step.attributes,
          collapsed: newState
        }
      }));

      const settings = {
        key: 'task_step_states',
        data: updatedData
      };

      axios.put(this.userSettingsUrl, { settings: [settings] });
    },
    deleteSteps() {
      $.post(this.urls.delete_steps_url, () => {
        this.steps = [];
        this.refreshProtocolStatus();
      }).fail(() => {
        HelperModule.flashAlertMsg(this.i18n.t('errors.general'), 'danger');
      });
    },
    addSteps(steps) {
      this.steps.push(...steps);
      this.refreshProtocolStatus();
    },
    refreshProtocolStatus() {
      if (this.inRepository) return;
      // legacy method from app/assets/javascripts/my_modules/protocols.js
      refreshProtocolStatusBar();

      // Update protocol options drowpdown for linked tasks
      this.refreshProtocolDropdownOptions();
    },
    refreshProtocolDropdownOptions() {
      if (!this.linked && this.inRepository) return;

      $.get(this.protocolUrl, (result) => {
        this.protocol.attributes.urls = result.data.attributes.urls;
      });
    },
    updateProtocol(attributes) {
      this.protocol.attributes = attributes;
    },
    updateName(newName) {
      this.protocol.attributes.name = newName;
      $.ajax({
        type: 'PATCH',
        url: this.urls.update_protocol_name_url,
        data: { protocol: { name: newName } },
        success: () => {
          this.refreshProtocolStatus();
        }
      });
    },
    updateDescription(protocol) {
      this.protocol.attributes = protocol.attributes;
      this.refreshProtocolStatus();
    },
    addStep(position) {
      $.post(this.urls.add_step_url, { position }, (result) => {
        result.data.newStep = true;
        this.updateStepsPosition(result.data);

        // scroll to bottom if step was appended at the end
        if (position === this.steps.length - 1) {
          this.$nextTick(() => this.scrollToBottom());
        }
        this.refreshProtocolStatus();
      }).fail((data) => {
        HelperModule.flashAlertMsg(data.responseJSON.error ? Object.values(data.responseJSON.error).join(', ') : I18n.t('errors.general'), 'danger');
      });
    },
    updateStepsPosition(step, action = 'add') {
      const { position } = step.attributes;
      if (action === 'delete') {
        this.steps.splice(position, 1);
      }
      const unordered_steps = this.steps.map((s) => {
        if (s.attributes.position >= position) {
          if (action === 'add') {
            s.attributes.position += 1;
          } else {
            s.attributes.position -= 1;
          }
        }
        return s;
      });
      if (action === 'add') {
        unordered_steps.push(step);
      }
      this.reorderSteps(unordered_steps);
    },
    updateStep(attributes) {
      this.steps[attributes.position].attributes = {
        ...this.steps[attributes.position].attributes,
        ...attributes
      };
      this.refreshProtocolStatus();
    },
    reorderSteps(steps) {
      this.steps = steps.sort((a, b) => a.attributes.position - b.attributes.position);
      this.refreshProtocolStatus();
    },
    updateStepOrder(orderedSteps) {
      orderedSteps.forEach((step, position) => {
        const index = this.steps.findIndex((e) => e.id === step.id);
        this.steps[index].attributes.position = position;
      });

      const stepPositions = {
        step_positions: this.steps.map(
          (step) => [step.id, step.attributes.position]
        )
      };

      $.ajax({
        type: 'POST',
        url: this.protocol.attributes.urls.reorder_steps_url,
        data: JSON.stringify(stepPositions),
        contentType: 'application/json',
        dataType: 'json',
        error: (() => HelperModule.flashAlertMsg(this.i18n.t('errors.general'), 'danger')),
        success: (() => this.reorderSteps(this.steps))
      });
    },
    startStepReorder() {
      this.reordering = true;
    },
    closeStepReorderModal() {
      this.reordering = false;
    },
    startPublish() {
      $.ajax({
        type: 'GET',
        url: this.urls.version_comment_url,
        contentType: 'application/json',
        dataType: 'json',
        success: (result) => {
          this.protocol.attributes.version_comment = result.version_comment;
          this.publishing = true;
        }
      });
    },
    closePublishModal() {
      this.publishing = false;
    },
    scrollToBottom() {
      window.scrollTo(0, document.body.scrollHeight);
    },
    publishProtocol(comment) {
      this.protocol.attributes.version_comment = comment;
      $.post(this.urls.publish_url, { version_comment: comment, view: 'show' });
    },
    scrollTop() {
      window.scrollTo(0, 0);
      setTimeout(() => {
        $('.my_module-name .view-mode').trigger('click');
        $('.my_module-name .input-field').focus();
      }, 300);
    },
    dragEnter(id) {
      this.activeDragStep = id;
    },
    uploadFilesToStep(file, stepId) {
      this.$refs.steps.find((child) => child.step?.id == stepId).uploadFiles(file);
    },
    firstObjectInViewport() {
      const step = $('.step-container:not(.locked)').toArray().find((element) => {
        const { top, bottom } = element.getBoundingClientRect();
        return bottom > 0 && top < window.innerHeight;
      });
      return step ? step.dataset.id : null;
    }
  }
};
</script>
