2019 WAEC Economics Theory The diagram below represents the equilibrium position of a firm in a perfectly competitive industry….

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• {{ element.page_num }} {{ element.page_num }}
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`, props: ['data'], created() { let num_pages = (this.data.total > this.data.per_page) ? Math.ceil(parseFloat(this.data.total)/parseFloat(this.data.per_page)) : 0;

for(let i = 1; i <= num_pages; i++){ this.elements.push({ page_num: i, isActive: i === this.data.current_page, disabled: i === this.data.current_page }) } }, data() { return { elements: [], } }, methods: { onPageSelect(num){ let url = this.data.path + '?c_page=' + num; this.navigate(url); }, navigate(url){ window.bus.$emit('comment_nav', url); } }, computed: { hasPages(){ return this.data.total > this.data.per_page; } } });

if(this.is_busy) return; this.is_busy = true;

let action = (this.selection && (this.selection === type)) ? '' : type;

if(action) { if (action === 'like') this.comment.like_ratings_count++; else this.comment.dislike_ratings_count++; }

if(this.selection){ if (this.selection === 'like') this.comment.like_ratings_count--; else this.comment.dislike_ratings_count--; }

this.selection = action; let formData = new FormData(); formData.append( 'comment_id', this.comment.id); formData.append( 'rate', type); formData.append( '_token', this.token);

fetch(`${BASE_URL}api/comments/rate_post`, { method: 'post', body: formData, }) .then(res => { if(res.status !== 200) { res.json().then(response => { console.log(response); }); } else { res.json().then(response => {

}); } }) .catch(err => console.log(err)) .finally(() => { this.is_busy = false; }); }, fetchRatings(type){ if(this.is_busy) return; this.is_busy = true;

fetch(`${BASE_URL}api/comments/ratings/${this.comment.id}/${type}`, { method: 'GET' }) .then(response => response.json()) .then(data => { window.bus.$emit('ratings', {ratings: data, type}); }) .catch(err => console.log(err)) .finally(() => { this.is_busy = false}); }, } })

`, props: ['comment'], data() { return {} }, methods: {} })

{{ reply.posted_by.display_name }}:

  {{ reply.created_at }}

`, props: ['comment', 'reply', 'rate_selection', 'token', 'current_user'], data() { return {} }, methods: {} })

{{ comment.posted_by.display_name }}
{{ comment.created_at }}

   Reply    Quote    Follow    Unfollow

• Image

  ×

  Post Reply

`, props: ['comment', 'is_alt', 'is_opera_mini', 'current_user', 'settings', 'user_ratings', 'user_follows', 'type', 'post_id', 'token'], data() { return { images: [] } }, methods: { user_rating(comment){ comment = (comment === undefined) ? this.comment : comment; let rating = (comment && (comment.id in this.user_ratings)) ? this.user_ratings[comment.id] : ''; return rating; }, show_reply_box(){ if(!IS_LOGGED_ON){ this.comment.show_reply_box = false; window.bus.$emit('show_login', ''); return; }

this.comment.show_reply_box = !this.comment.show_reply_box;

if(this.comment.show_reply_box && !this.is_opera_mini) { setTimeout(function(){ $('textarea.emojionearea').emojioneArea(); }, 500); } }, save(submitEvent){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

if(this.comment.is_saving) return;

let formElements = submitEvent.target.elements; let message = formElements.message.value;

if(!message && this.images.length < 1) { this.comment.notification.error('No comment message or image specified'); return; } this.comment.is_saving = true; let formData = new FormData(); formData.append('comment', message); formData.append('parent_id', this.comment.id); formData.append( '_token', this.token); this.images.forEach((image) => { formData.append('images[]', image); });

fetch(`${BASE_URL}api/comments/${this.type}/${this.post_id}`, { method: 'post', body: formData, }) .then(res => { if(res.status !== 200) { res.json().then(response => { this.comment.notification.error(response.join()); }); } else { res.json().then(response => { this.comment.notification.success('Comment was successfully added.'); this.$emit('save', response);

//Clear form formElements.message.value = ''; let d = submitEvent.target.querySelector('.emojionearea-editor'); if(d) d.innerHTML = ""; this.images = []; formElements.image.value = ''; }); } }) .catch(err => console.log(err)) .finally(() => { this.comment.is_saving = false; }); }, onImageSelect(event, index){ this.images[index] = event.target.files[0]; }, quote(){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

window.bus.$emit('quote', this.comment); let elem = document.getElementById("comment_form"); if(elem) elem.scrollIntoView(); }, updateFollowStatus(status){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

if(this.comment.is_saving) return; this.comment.is_saving = true;

let formData = new FormData(); formData.append( 'comment_id', this.comment.id); formData.append( 'status', status); formData.append( '_token', this.token);

fetch(`${BASE_URL}api/comments/follow_status`, { method: 'post', body: formData, }) .then(res => { if(res.status !== 200) { res.json().then(response => { console.log(response); }); } else { res.json().then(response => { if(status === 'follow') { if(!this.user_follows.includes(this.comment.id)) this.user_follows.push(this.comment.id); } else{ if(this.user_follows.includes(this.comment.id)) { let index = this.user_follows.indexOf(this.comment.id); this.user_follows.splice(index, 1); } } }); } }) .catch(err => console.log(err)) .finally(() => { this.comment.is_saving = false; }); } }, computed: { is_following(){ return (this.comment && this.user_follows.includes(this.comment.id)); } } })

{{ comment.posted_by.display_name }}
{{ comment.created_at }}

   Reply    Quote    Follow    Unfollow

• Image

  ×

  Post Reply

`, props: ['comment', 'is_alt', 'is_opera_mini', 'current_user', 'settings', 'user_ratings', 'user_follows', 'type', 'post_id', 'token'], data() { return { images: [] } }, methods: { user_rating(comment){ comment = (comment === undefined) ? this.comment : comment; let rating = (comment && (comment.id in this.user_ratings)) ? this.user_ratings[comment.id] : ''; return rating; }, show_reply_box(){ if(!IS_LOGGED_ON){ this.comment.show_reply_box = false; window.bus.$emit('show_login', ''); return; }

this.comment.show_reply_box = !this.comment.show_reply_box;

if(this.comment.show_reply_box && !this.is_opera_mini) { setTimeout(function(){ $('textarea.emojionearea').emojioneArea(); }, 500); } }, save(submitEvent){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

if(this.comment.is_saving) return;

let formElements = submitEvent.target.elements; let message = formElements.message.value;

if(!message && this.images.length < 1) { this.comment.notification.error('No comment message or image specified'); return; } this.comment.is_saving = true; let formData = new FormData(); formData.append('comment', message); formData.append('parent_id', this.comment.id); formData.append( '_token', this.token); this.images.forEach((image) => { formData.append('images[]', image); });

fetch(`${BASE_URL}api/comments/${this.type}/${this.post_id}`, { method: 'post', body: formData, }) .then(res => { if(res.status !== 200) { res.json().then(response => { this.comment.notification.error(response.join()); }); } else { res.json().then(response => { this.comment.notification.success('Comment was successfully added.'); this.$emit('save', response);

//Clear form formElements.message.value = ''; let d = submitEvent.target.querySelector('.emojionearea-editor'); if(d) d.innerHTML = ""; this.images = []; formElements.image.value = ''; }); } }) .catch(err => console.log(err)) .finally(() => { this.comment.is_saving = false; }); }, onImageSelect(event, index){ this.images[index] = event.target.files[0]; }, quote(){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

window.bus.$emit('quote', this.comment); let elem = document.getElementById("comment_form"); if(elem) elem.scrollIntoView(); }, updateFollowStatus(status){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

if(this.comment.is_saving) return; this.comment.is_saving = true;

let formData = new FormData(); formData.append( 'comment_id', this.comment.id); formData.append( 'status', status); formData.append( '_token', this.token);

fetch(`${BASE_URL}api/comments/follow_status`, { method: 'post', body: formData, }) .then(res => { if(res.status !== 200) { res.json().then(response => { console.log(response); }); } else { res.json().then(response => { if(status === 'follow') { if(!this.user_follows.includes(this.comment.id)) this.user_follows.push(this.comment.id); } else{ if(this.user_follows.includes(this.comment.id)) { let index = this.user_follows.indexOf(this.comment.id); this.user_follows.splice(index, 1); } } }); } }) .catch(err => console.log(err)) .finally(() => { this.comment.is_saving = false; }); } }, computed: { is_following(){ return (this.comment && this.user_follows.includes(this.comment.id)); } } })

`, props: ['comment', 'token', 'current_user'], data() { return { is_busy: false } }, methods: { reportComment(event){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

$('#report_modal').find('.modal-body #comment_id').val(this.comment.id);

$('#report_modal').modal('show') }, blockUser(){ if(!IS_LOGGED_ON){ window.bus.$emit('show_login', ''); return; }

let myPromise = new Promise((resolve, reject) => { let content = `Are you sure you want to block ${this.comment.posted_by.display_name}? You will not be able to view comments from this user.`; window.bus.$emit('open_confirm_dialog', { resolve, content }); });

myPromise.then(() => { if (this.is_busy) return; this.is_busy = true;

let formData = new FormData(); formData.append('user_id', this.comment.user_id); formData.append('_token', this.token);

fetch(`${BASE_URL}api/comments/block_user`, { method: 'post', body: formData, }) .then(res => { if (res.status === 200) { res.json().then(response => { window.bus.$emit('fetch_comments', ''); let content = this.comment.posted_by.display_name + ' was successfully blocked.'; window.bus.$emit('feedback_dialog', { content, title: "Success" }); }); } }) .catch(err => console.log(err)) .finally(() => { this.is_busy = false; }); }); },

} })

window.bus.$on('fetch_comments', (data) => { this.fetch(); });

window.bus.$on('comment_nav', (url) => { this.fetch(url); });

window.bus.$on('open_confirm_dialog', (data) => { this.confirm_modal_data = data; $('#user_block_confirm_dialog').modal('show'); });

window.bus.$on('feedback_dialog', (data) => { this.feedback_modal_data = data; $('#feedback_modal').modal('show'); });

window.bus.$on('show_login', (data) => { $('#member_login_modal').modal('show'); });

window.bus.$on('ratings', (data) => { this.ratings = data.ratings; let modalBox = $('#friendListModal'); if (modalBox.length) { var title = (data.type === 'like') ? 'Like' : 'Dislike'; title += (data.ratings.length > 1) ? 's' : ''; modalBox.find('.modal-title').html(data.ratings.length + ' ' + title); modalBox.modal('show'); } });

let comments = {"user_ratings":[],"user_follows":[],"comment_count":0,"current_page":1,"data":[],"first_page_url":"https:\/\/myschool.ng\/api\/comments\/classroom\/56408?c_page=1","from":null,"last_page":1,"last_page_url":"https:\/\/myschool.ng\/api\/comments\/classroom\/56408?c_page=1","next_page_url":null,"path":"https:\/\/myschool.ng\/api\/comments\/classroom\/56408","per_page":15,"prev_page_url":null,"to":null,"total":0}; this.setComments(comments);

let comments_achieved = []; this.setAComments(comments_achieved);

}, mounted() { let that = this; $('#report_modal').on('show.bs.modal', function(event) { var modal = $(this); modal.find('.modal-body select').val(''); modal.find('.modal-body textarea').val(''); that.report_form_feedback = null; }); }, methods: { fetch(url) { if (this.is_loading) return; this.is_loading = true; const achive = false; url = (url !== undefined) ? url + '&' : `${BASE_URL}api/comments/${this.type}/${this.post_id}` + '?'; url += $.param({ filter: this.selectedSort, achieved_at: achive, });

let elem = document.getElementById("commentsApp"); if (elem) elem.scrollIntoView();

fetch(url, { method: 'GET' }) .then(response => response.json()) .then(data => { const ach = false; if (this.active == 'latest' && ach) { this.setComments(data.comments); } else if (this.active == 'achieved' && ach) { this.setAComments(data.comments_achieved); setTimeout(() => { let tabElem = document.getElementById('old-tab'); tabElem.click() }, 1000)

} else { this.setComments(data.comments); } }) .catch(err => console.log(err)) .finally(() => { this.is_loading = false

}); }, onSortByChange(sort) { this.selectedSort = sort; this.fetch(); }, attachData(comment) { comment.show_reply_box = (IS_LOGGED_ON && comment.replies.length >= 5); comment.is_saving = false; comment.message = ''; if (!('images' in comment)) comment.images = []; comment.notification = this.notification_obj(); if (!('like_ratings_count' in comment)) comment.like_ratings_count = 0; if (!('dislike_ratings_count' in comment)) comment.dislike_ratings_count = 0; }, setComments(comments) { comments.data.forEach((comment) => { this.attachData(comment); }); this.comments = comments; this.user_ratings = comments.user_ratings; this.user_follows = comments.user_follows; this.comment_count = comments.comment_count;

$(document).ready(function() { setTimeout(function() { $('.lazy').lazy() }, 500);

if (!this.is_opera_mini) { setTimeout(function() { $('textarea.emojionearea').emojioneArea(); }, 500); } }); }, setAComments(comments) { comments.data.forEach((comment) => { this.attachData(comment); }); this.comments_achieved = comments; this.user_ratings = comments.user_ratings; this.user_follows = comments.user_follows; this.comment_count = comments.comment_count;

$(document).ready(function() { setTimeout(function() { $('.lazy').lazy() }, 500);

if (!this.is_opera_mini) { setTimeout(function() { $('textarea.emojionearea').emojioneArea(); }, 500); } }); }, newReplyHandler(comment, reply) { this.attachData(reply); comment.replies.push(reply); this.comment_count++; }, notification_obj() { return { type: 'error', message: '', class_name: function() { return this.type === 'success' ? 'alert-success' : 'alert-danger'; }, error: function(message) { this.type = 'error'; this.message = message; }, success: function(message) { this.type = 'success'; this.message = message; } }; }, sendReport() { if (!IS_LOGGED_ON) { window.bus.$emit('show_login', ''); return; }

this.report_form_feedback = null;

if (this.is_busy) return; this.is_busy = true;

const formElement = document.querySelector("#report_modal form"); let formData = new FormData(formElement); formData.append('_token', this.token);

fetch(`${BASE_URL}api/comments/report`, { method: 'post', body: formData, }) .then(res => { if (res.status === 200) { res.json().then(response => { this.report_form_feedback = { status: 'success' }

/*let index = this.comments.data.findIndex(x => { return x.id === parseInt(response.comment_id); }); console.log(index);*/ }); } else if (res.status === 400) { res.json().then(response => { this.report_form_feedback = { status: 'error', message: response[0] }; }); } }) .catch(err => console.log(err)) .finally(() => { this.is_busy = false;

setTimeout(() => { this.report_form_feedback = null; }, 2000) }); }, yesAction() { $('#user_block_confirm_dialog').modal('hide'); this.confirm_modal_data.resolve(); } }, watch: { comment_count: function(count) { $('.comment-count-d').html(count); } } });

Quick Questions

if (this.is_saving) return;

let comment = this.$refs['comment'].value;

if (!comment && this.images.length < 1) { this.notification.error('No comment message or image specified'); return; } this.is_saving = true; let formData = new FormData(); formData.append('comment', comment); formData.append('_token', this.token); // formData.append('rc_token', // rc_token); if (this.quote) formData.append('qtid', this.quote.id); this.images.forEach((image) => { formData.append('images[]', image); });

fetch(`${BASE_URL}api/comments/${this.type}/${this.post_id}`, { method: 'post', body: formData, }) .then(res => { if (res.status !== 200) { res.json().then(response => { console.log(response); this.notification.error(response.join()); }); } else { res.json().then(response => { this.$refs['comment'].value = ''; $('.emojionearea-editor').html(''); this.images = []; $('input[type=file]').val(''); window.bus.$emit('new_comment', response); this.notification.success('Comment was successfully added.'); }); } }) .catch(err => console.log(err)) .finally(() => { this.is_saving = false; }); }, onImageSelect(event, index) { this.images[index] = event.target.files[0]; }, notification_obj() { return { type: 'error', message: '', class_name: function() { return this.type === 'success' ? 'alert-success' : 'alert-danger'; }, error: function(message) { this.type = 'error'; this.message = message; }, success: function(message) { this.type = 'success'; this.message = message; } }; } } });