import os

from crc import app, env
from jinja2 import Environment, FileSystemLoader
from flask import render_template, render_template_string
from flask_mail import Mail, Message


# TODO: Extract common mailing code into its own function

def send_ramp_up_submission_email(sender, recipients, approver_1, approver_2=None):
    with app.app_context():
        try:
            msg = Message('Research Ramp-up Plan Submitted',
                  sender=sender,
                  recipients=recipients)

            template = env.get_template('ramp_up_submission.txt')
            template_vars = {'approver_1': approver_1, 'approver_2': approver_2}
            msg.body = template.render(template_vars)
            template = env.get_template('ramp_up_submission.html')
            msg.html = template.render(template_vars)

            mail = Mail(app)
            mail.send(msg)
        except Exception as e:
            app.logger.error(str(e))

def send_ramp_up_approval_request_email(sender, recipients, primary_investigator):
    with app.app_context():
        try:
            msg = Message('Research Ramp-up Plan Approval Request',
                  sender=sender,
                  recipients=recipients)

            template = env.get_template('ramp_up_approval_request.txt')
            template_vars = {'primary_investigator': primary_investigator}
            msg.body = template.render(template_vars)
            template = env.get_template('ramp_up_approval_request.html')
            msg.html = template.render(template_vars)

            mail = Mail(app)
            mail.send(msg)
        except Exception as e:
            app.logger.error(str(e))

def send_ramp_up_approval_request_first_review_email(sender, recipients, primary_investigator, approver):
    with app.app_context():
        try:
            msg = Message('Research Ramp-up Plan Approval Request',
                  sender=sender,
                  recipients=recipients)

            template = env.get_template('ramp_up_approval_request_first_review.txt')
            template_vars = {'primary_investigator': primary_investigator, 'approver': approver}
            msg.body = template.render(template_vars)
            template = env.get_template('ramp_up_approval_request_first_review.html')
            msg.html = template.render(template_vars)

            mail = Mail(app)
            mail.send(msg)
        except Exception as e:
            app.logger.error(str(e))

def send_ramp_up_approved_email(sender, recipients, approver_1, approver_2=None):
    with app.app_context():
        try:
            msg = Message('Research Ramp-up Plan Approved',
                  sender=sender,
                  recipients=recipients)

            template = env.get_template('ramp_up_approved.txt')
            template_vars = {'approver_1': approver_1, 'approver_2': approver_2}
            msg.body = template.render(template_vars)
            template = env.get_template('ramp_up_approved.html')
            msg.html = template.render(template_vars)

            mail = Mail(app)
            mail.send(msg)
        except Exception as e:
            app.logger.error(str(e))

def send_ramp_up_denied_email(sender, recipients, approver):
    with app.app_context():
        try:
            msg = Message('Research Ramp-up Plan Denied',
                  sender=sender,
                  recipients=recipients)

            template = env.get_template('ramp_up_denied.txt')
            template_vars = {'approver': approver}
            msg.body = template.render(template_vars)
            template = env.get_template('ramp_up_denied.html')
            msg.html = template.render(template_vars)

            mail = Mail(app)
            mail.send(msg)
        except Exception as e:
            app.logger.error(str(e))