# -*- coding: utf-8 -*-

# Script to create Git repositories in a group from a list of names and
# email addresses in a CSV file (such as exported from SynapseS).
#
# Minimally tested.  Seems to work.  Use at your own risk.
#
# By James Eagan <james.eagan@telecom-paris.fr>
# https://james.eagan.fr

import csv
import gitlab
import sys

GITLAB_URL='https://gitlab.telecom-paris.fr'
PRIVATE_TOKEN=sys.argv[3] if len(sys.argv) > 3 else ''

def readNames(fileName): 
    result = []
    with open(fileName) as fd:
        sneakPeek = fd.read(1024)
        fd.seek(0)
        sniffer = csv.Sniffer()
        dialect = sniffer.sniff(sneakPeek)
        hasHeader = sniffer.has_header(sneakPeek)
        
        reader = csv.reader(fd, dialect)
        # reader = csv.reader(fd, delimiter=';')
        if hasHeader:
            next(reader)
        for row in reader:
            result.append((row[0], row[1], row[2]))
    return result

def lookupUser(email, gitlab):
    return gitlab.users.list(search=email)[0]

def createProject(name, groupId, gitlab):
    return gitlab.projects.create({'name': name, 
                                   'namespace_id': groupId})

def addProjectMember(project, userId, accessLevel):
    return project.members.create({'user_id': userId, 
                                   'access_level': accessLevel})

def makeProjectsInGroupId(groupId, csvFile):
    api = gitlab.Gitlab(GITLAB_URL, PRIVATE_TOKEN)
    for (lastName, firstName, email) in readNames(csvFile):
        try:
#            if email.endswith('@telecom-paris.fr'):
#                email = email.split('@')[0] + "@telecom-paristech.fr"
            user = lookupUser(email, api)
            print("::: Creating project for {} {} <{}>…".format(
                                    lastName, firstName, email, user.id))
            print("::: Found {} ({})".format(user.name, user.id))
            project = createProject('{} {}'.format(lastName, firstName), 
                                    groupId, api)
            member = addProjectMember(project, user.id,
                                      gitlab.MAINTAINER_ACCESS)
        except IndexError as e:
            print >> sys.stderr, "!!! Could not create project for {}: User not found ({})".format(email, e)
        except Exception as e:
            # print("!!! Could not create user for {}: {}".format(email, e), file=sys.stderr)
            print >> sys.stderr, "!!! Error creating project for {}: {}".format(email, e)

if __name__ == '__main__':
    if len(sys.argv) != 4:
        print("*** Usage: python {} <csv> <groupId> <token>".format(sys.argv[0]))
        print("***        csv: a CSV file exported from Synapses.")
        print("***             The first three columns are assumed to be ")
        print("***             last name, first name, email address.")
        print("***    groupId: The GitLab id where all the projects will")
        print("***             be added.")
        print("***      token: A GitLab API token as created at ")
        print("***             {}/-/profile/personal_access_tokens".format(GITLAB_URL))
        print("***             Be sure to enable API scope.")
        sys.exit(1)
    makeProjectsInGroupId(sys.argv[2], sys.argv[1])