From f1157895dbec3f21a1237bc52cd9dac897b7a43b Mon Sep 17 00:00:00 2001
From: Anand Chitipothu <anandology@gmail.com>
Date: Tue, 30 Nov 2021 08:29:24 +0530
Subject: [PATCH] feat: added portal page to join a cohort

Issue #271
---
 school/hooks.py                             |  1 +
 school/lms/api.py                           | 25 ++++++
 school/lms/doctype/lms_course/lms_course.py |  4 +
 school/www/cohorts/join.html                | 88 +++++++++++++++++++++
 school/www/cohorts/join.py                  | 24 ++++++
 5 files changed, 142 insertions(+)
 create mode 100644 school/www/cohorts/join.html
 create mode 100644 school/www/cohorts/join.py

diff --git a/school/hooks.py b/school/hooks.py
index 7eaed275..7c217970 100644
--- a/school/hooks.py
+++ b/school/hooks.py
@@ -146,6 +146,7 @@ website_route_rules = [
 	{"from_route": "/courses/<course>/subgroups/<cohort>/<subgroup>", "to_route": "cohorts/subgroup", "defaults": {"page": "info"}},
 	{"from_route": "/courses/<course>/subgroups/<cohort>/<subgroup>/students", "to_route": "cohorts/subgroup", "defaults": {"page": "students"}},
 	{"from_route": "/courses/<course>/subgroups/<cohort>/<subgroup>/join-requests", "to_route": "cohorts/subgroup", "defaults": {"page": "join-requests"}},
+	{"from_route": "/courses/<course>/join/<cohort>/<subgroup>/<invite_code>", "to_route": "cohorts/join"},
 	{"from_route": "/users", "to_route": "profiles/profile"}
 ]
 
diff --git a/school/lms/api.py b/school/lms/api.py
index b60d2d13..fac39d52 100644
--- a/school/lms/api.py
+++ b/school/lms/api.py
@@ -45,3 +45,28 @@ def save_current_lesson(course_name, lesson_name):
     doc.current_lesson = lesson_name
     doc.save(ignore_permissions=True)
     return {"current_lesson": doc.current_lesson}
+
+
+@frappe.whitelist()
+def join_cohort(course, cohort, subgroup, invite_code):
+    """Creates a Cohort Join Request for given user.
+    """
+    course_doc = frappe.get_doc("LMS Course", course)
+    cohort_doc = course_doc and course_doc.get_cohort(cohort)
+    subgroup_doc = cohort_doc and cohort_doc.get_subgroup(subgroup)
+
+    if not subgroup_doc or subgroup_doc.invite_code != invite_code:
+        return {
+            "ok": False,
+            "error": "Invalid join link"
+        }
+
+    data = {
+        "doctype": "Cohort Join Request",
+        "cohort": cohort_doc.name,
+        "subgroup": subgroup_doc.name,
+        "email": frappe.session.user
+    }
+    doc = frappe.get_doc(data)
+    doc.insert(ignore_permissions=True)
+    return {"ok": True}
diff --git a/school/lms/doctype/lms_course/lms_course.py b/school/lms/doctype/lms_course/lms_course.py
index 6815dd6e..9562445c 100644
--- a/school/lms/doctype/lms_course/lms_course.py
+++ b/school/lms/doctype/lms_course/lms_course.py
@@ -213,6 +213,10 @@ class LMSCourse(Document):
     def get_cohorts(self):
         return find_all("Cohort", course=self.name, order_by="creation")
 
+    def get_cohort(self, cohort_slug):
+        name = frappe.get_value("Cohort", {"course": self.name, "slug": cohort_slug})
+        return name and frappe.get_doc("Cohort", name)
+
     def is_cohort_staff(self, user_email):
         """Returns True if the user is either a mentor or a staff for one or more active cohorts of this course.
         """
diff --git a/school/www/cohorts/join.html b/school/www/cohorts/join.html
new file mode 100644
index 00000000..a31ecc63
--- /dev/null
+++ b/school/www/cohorts/join.html
@@ -0,0 +1,88 @@
+{% extends "www/cohorts/base.html" %}
+
+{% block title %}Join Course{% endblock %}
+
+{% block page_content %}
+
+<h2>Join Course</h2>
+
+<p>
+  Course: {{course.title}}
+</p>
+<p>
+  Cohort: {{cohort.title}}
+</p>
+<p>
+  Subgroup: {{subgroup.title}}
+</p>
+
+{% if frappe.session.user == "Guest" %}
+
+<div class="alert alert-warning">
+  <p>
+  Please login to be able to join the course.</p>
+
+  <p>
+  If you don't already have an account, you can <a href="/login#signup">sign up for a new account</a>.
+  </p>
+  <a class="btn btn-primary" href="/login">Login to continue</a>
+</div>
+{% elif subgroup.has_student(frappe.session.user) %}
+  <div class="alert alert-info">
+    <p>You are already a student of this course.</p>
+    <a class="btn btn-primary" href="#">Go to the course</a>
+  </div>
+{% elif subgroup.has_join_request(frappe.session.user) %}
+  <div class="alert alert-info">
+    <p>We have received your request to join the course. You'll hear back from us soon.</p>
+  </div>
+{% else %}
+
+<a class="btn btn-primary" id="join">Join the course</a>
+
+{% endif %}
+
+{% endblock %}
+
+{% block script %}
+
+<script type="text/javascript">
+
+$(function() {
+  console.log("ready!")
+  $("#join").click(function() {
+    var parts = window.location.pathname.split("/")
+    var course = parts[2];
+    var cohort = parts[4];
+    var subgroup = parts[5];
+    var invite_code = parts[6];
+
+    frappe.call('school.lms.api.join_cohort', {
+      course: course,
+      cohort: cohort,
+      subgroup: subgroup,
+      invite_code: invite_code
+    })
+    .then(r => {
+      if (r.message.ok) {
+        let d = new frappe.ui.Dialog({
+          title: "Notification",
+          primary_action_label: "Proceed",
+          primary_action() {
+            d.hide();
+            window.location.reload();
+          }
+        });
+        var message = "We've received your interest to join the course. We'll hear from us soon.";
+        d.show();
+        d.set_message(message);
+      }
+      else {
+        frappe.msgprint(r.message.error);
+      }
+    });
+  });
+});
+</script>
+
+{% endblock %}
diff --git a/school/www/cohorts/join.py b/school/www/cohorts/join.py
new file mode 100644
index 00000000..4b6368a3
--- /dev/null
+++ b/school/www/cohorts/join.py
@@ -0,0 +1,24 @@
+import frappe
+from . import utils
+
+def get_context(context):
+    context.no_cache = 1
+
+    course = utils.get_course(frappe.form_dict["course"])
+    cohort = course and utils.get_cohort(course, frappe.form_dict["cohort"])
+    subgroup = cohort and utils.get_subgroup(cohort, frappe.form_dict["subgroup"])
+    if not subgroup:
+        context.template = "www/404.html"
+        return
+
+    invite_code = frappe.form_dict["invite_code"]
+    if subgroup.invite_code != invite_code:
+        context.template = "www/404.html"
+        return
+
+    utils.add_nav(context, "All Courses", "/courses")
+    utils.add_nav(context, course.title, "/courses/" + course.name)
+
+    context.course = course
+    context.cohort = cohort
+    context.subgroup = subgroup