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interface.py
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interface.py
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from __future__ import print_function
from flask import Flask, request, render_template, Response
import scrape, database
import sys, json
TERM = 1165
MONTHS = {1:'Jan',2:'Feb',3:'Mar',4:'Apr',5:'May',6:'Jun',7:'Jul',8:'Aug',9:'Sep',10:'Oct',11:'Nov',12:'Dec'}
excluded_faculties = ['ALL', 'UAE', 'TEACH']
excluded_programs = ['ND']
replacement_faculties = {'CA':'MATH', 'ARCH':'ENG'}
program_specific_replacement_faculties = {'SE': 'ENG', 'CFM': 'MATH'}
def _parseDate(dateCode):
return '{date} {month} {year}'.format(date=int(dateCode[6:8]), month=MONTHS[int(dateCode[4:6])], year=dateCode[0:4])
app = Flask(__name__)
### Updating ### For scraping new data
def update():
print('Initializing database...')
database.initialize()
print('Getting available terms...')
terms = scrape.getTerms()
print('Terms retrieved. Updating table...')
database.insert('terms', terms)
print('Getting faculty information and dates for available terms...')
termsInfo = {
'faculties' : [],
'dates' : []
}
for term in terms:
termInfo = scrape.getFacultiesAndDates(term['id'])
termsInfo['faculties'].extend(termInfo['faculties'])
termsInfo['dates'].extend(termInfo['dates'])
print('Faculties and dates retrieved. Updating tables...')
database.insert('faculties', termsInfo['faculties'])
database.insert('dates', termsInfo['dates'])
print('Checking the database for new stats to retrieve...')
missingStats = database.getMissingEmploymentStats()
count = len(missingStats)
print('{count} records to retrieve. Starting retrieval...'.format(count=count))
employment = []
termsMap = processTerms(database.getTerms())
facultiesMap = {}
for termKey in termsMap:
facultiesMap[termKey] = processFaculties(database.getFaculties(termKey))
current = 1
for entry in missingStats:
delay = random.random()*.5
time.sleep(delay)
print('({percent:5.2f}%):{current}/{count} - Fetching info on {faculty} from {date} in {term}...'.format(percent=float(current)/count * 100, current=current, count=count, faculty=facultiesMap[entry[0]][entry[2]], date=str(entry[1]), term=termsMap[entry[0]]))
employment.extend(scrape.getEmploymentStats(*entry))
if current % 25 == 0:
print('Saving new entries...')
database.insert('employment', employment)
employment = []
current+=1
database.insert('employment', employment)
print('Update complete.')
### Processing ### Translate database results into usable values
def processTerms(terms):
results = {}
for term in terms:
results[term[0]] = str(term[1])
return results
def processFaculties(faculties):
results = {}
for faculty in faculties:
if not (str(faculty[1]) in excluded_faculties or str(faculty[2]) in excluded_programs):
results[faculty[0]] = str(faculty[1] + ' ' + faculty[2])
return results
def processDates(dates):
results = []
for date in dates:
results.append(str(date[0]))
return results
def processEmploymentStats(employment):
results = {}
for dbResult in employment:
facultyName = str(dbResult[0])
program = str(dbResult[1])
employed = dbResult[2]
unemployed = dbResult[3]
programId = str(dbResult[4])
# custom override
faculty = facultyName
if facultyName in replacement_faculties:
faculty = replacement_faculties[facultyName]
if program in program_specific_replacement_faculties:
faculty = program_specific_replacement_faculties[program]
if faculty not in excluded_faculties and program not in excluded_programs:
if faculty not in results:
results[faculty] = {
'name': faculty,
'programs': [],
'employed': 0,
'unemployed': 0
}
results[faculty]['employed'] += employed
results[faculty]['unemployed'] += unemployed
results[faculty]['programs'].append({
'name': facultyName + ' ' + program,
'employed': employed,
'unemployed': unemployed,
'id': programId
})
return results
def processEmploymentOverTime(employment):
results = {}
for dbResult in employment:
facultyName = str(dbResult[0])
program = str(dbResult[1])
employed = dbResult[2]
unemployed = dbResult[3]
programId = str(dbResult[4])
date = str(dbResult[5])
# custom override
faculty = facultyName
if facultyName in replacement_faculties:
faculty = replacement_faculties[facultyName]
if program in program_specific_replacement_faculties:
faculty = program_specific_replacement_faculties[program]
if faculty not in excluded_faculties and program not in excluded_programs:
if faculty not in results:
results[faculty] = {
'name': faculty,
'data': [],
'programs': {}
}
facultyObj = results[faculty]
if program not in facultyObj['programs']:
facultyObj['programs'][program] = {
'name': facultyName + ' ' + program,
'id': programId,
'data': []
}
programObj = facultyObj['programs'][program]
programObj['data'].append(employed)
currentDateIndex = len(programObj['data']) - 1
if len(facultyObj['data']) <= currentDateIndex:
facultyObj['data'].append(0)
facultyObj['data'][currentDateIndex] += employed
return results
### Generation ### Create objects and lists directly used for templates and charting
def generateDateOptions(term):
dateCodes = processDates(database.getDates(term))
dates = []
for dateCode in dateCodes:
dates.append({'code':dateCode, 'label':_parseDate(dateCode)})
return dates
def generateProgramOptions(term):
facultiesMap = processFaculties(database.getFaculties(term))
options = []
for code in facultiesMap:
options.append({'code':code, 'label':facultiesMap[code]})
return options
### Routing ###
@app.route('/')
def index():
return Response(render_template('index.html', dates=generateDateOptions(TERM), programs=generateProgramOptions(TERM)), mimetype='text/html')
@app.route('/byDate', methods=['GET'])
def getDataByDate():
dbResult = database.getEmploymentStatsByDate(1165, request.args.get('date'))
result = processEmploymentStats(dbResult)
return Response(json.dumps(result), mimetype='application/json')
@app.route('/overTime', methods=['GET'])
def getDataOverTime():
dbResult = database.getEmploymentStatsOverTime(1165)
dates = processDates(database.getDates(1165))
dates.reverse()
result = {
'dates': dates,
'employment': processEmploymentOverTime(dbResult)
}
return Response(json.dumps(result), mimetype='application/json')