#!/usr/bin/env python
# Copyright (C) 2016 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""
This script will populate an empty standard Gerrit instance with some
data for local testing.

TODO(hiesel): Make real git commits instead of empty changes
TODO(hiesel): Add comments
"""

from __future__ import print_function
import atexit
import json
import optparse
import os
import random
import shutil
import subprocess
import tempfile
import requests
import requests.auth

DEFAULT_TMP_PATH = "/tmp"
TMP_PATH = ""
BASE_URL = "http://localhost:%d/a/"

ADMIN_BASIC_AUTH = requests.auth.HTTPBasicAuth("admin", "secret")

# GROUP_ADMIN stores a GroupInfo for the admin group (see Gerrit rest docs)
# In addition, GROUP_ADMIN["name"] stores the admin group"s name.
GROUP_ADMIN = {}

HEADERS = {"Content-Type": "application/json", "charset": "UTF-8"}

# Random names from US Census Data
FIRST_NAMES = [
  "Casey", "Yesenia", "Shirley", "Tara", "Wanda", "Sheryl", "Jaime", "Elaine",
  "Charlotte", "Carly", "Bonnie", "Kirsten", "Kathryn", "Carla", "Katrina",
  "Melody", "Suzanne", "Sandy", "Joann", "Kristie", "Sally", "Emma", "Susan",
  "Amanda", "Alyssa", "Patty", "Angie", "Dominique", "Cynthia", "Jennifer",
  "Theresa", "Desiree", "Kaylee", "Maureen", "Jeanne", "Kellie", "Valerie",
  "Nina", "Judy", "Diamond", "Anita", "Rebekah", "Stefanie", "Kendra", "Erin",
  "Tammie", "Tracey", "Bridget", "Krystal", "Jasmin", "Sonia", "Meghan",
  "Rebecca", "Jeanette", "Meredith", "Beverly", "Natasha", "Chloe", "Selena",
  "Teresa", "Sheena", "Cassandra", "Rhonda", "Tami", "Jodi", "Shelly", "Angela",
  "Kimberly", "Terry", "Joanna", "Isabella", "Lindsey", "Loretta", "Dana",
  "Veronica", "Carolyn", "Laura", "Karen", "Dawn", "Alejandra", "Cassie",
  "Lorraine", "Yolanda", "Kerry", "Stephanie", "Caitlin", "Melanie", "Kerri",
  "Doris", "Sandra", "Beth", "Carol", "Vicki", "Shelia", "Bethany", "Rachael",
  "Donna", "Alexandra", "Barbara", "Ana", "Jillian", "Ann", "Rachel", "Lauren",
  "Hayley", "Misty", "Brianna", "Tanya", "Danielle", "Courtney", "Jacqueline",
  "Becky", "Christy", "Alisha", "Phyllis", "Faith", "Jocelyn", "Nancy",
  "Gloria", "Kristen", "Evelyn", "Julie", "Julia", "Kara", "Chelsey", "Cassidy",
  "Jean", "Chelsea", "Jenny", "Diana", "Haley", "Kristine", "Kristina", "Erika",
  "Jenna", "Alison", "Deanna", "Abigail", "Melissa", "Sierra", "Linda",
  "Monica", "Tasha", "Traci", "Yvonne", "Tracy", "Marie", "Maria", "Michaela",
  "Stacie", "April", "Morgan", "Cathy", "Darlene", "Cristina", "Emily"
  "Ian", "Russell", "Phillip", "Jay", "Barry", "Brad", "Frederick", "Fernando",
  "Timothy", "Ricardo", "Bernard", "Daniel", "Ruben", "Alexis", "Kyle", "Malik",
  "Norman", "Kent", "Melvin", "Stephen", "Daryl", "Kurt", "Greg", "Alex",
  "Mario", "Riley", "Marvin", "Dan", "Steven", "Roberto", "Lucas", "Leroy",
  "Preston", "Drew", "Fred", "Casey", "Wesley", "Elijah", "Reginald", "Joel",
  "Christopher", "Jacob", "Luis", "Philip", "Mark", "Rickey", "Todd", "Scott",
  "Terrence", "Jim", "Stanley", "Bobby", "Thomas", "Gabriel", "Tracy", "Marcus",
  "Peter", "Michael", "Calvin", "Herbert", "Darryl", "Billy", "Ross", "Dustin",
  "Jaime", "Adam", "Henry", "Xavier", "Dominic", "Lonnie", "Danny", "Victor",
  "Glen", "Perry", "Jackson", "Grant", "Gerald", "Garrett", "Alejandro",
  "Eddie", "Alan", "Ronnie", "Mathew", "Dave", "Wayne", "Joe", "Craig",
  "Terry", "Chris", "Randall", "Parker", "Francis", "Keith", "Neil", "Caleb",
  "Jon", "Earl", "Taylor", "Bryce", "Brady", "Max", "Sergio", "Leon", "Gene",
  "Darin", "Bill", "Edgar", "Antonio", "Dalton", "Arthur", "Austin", "Cristian",
  "Kevin", "Omar", "Kelly", "Aaron", "Ethan", "Tom", "Isaac", "Maurice",
  "Gilbert", "Hunter", "Willie", "Harry", "Dale", "Darius", "Jerome", "Jason",
  "Harold", "Kerry", "Clarence", "Gregg", "Shane", "Eduardo", "Micheal",
  "Howard", "Vernon", "Rodney", "Anthony", "Levi", "Larry", "Franklin", "Jimmy",
  "Jonathon", "Carl",
]

LAST_NAMES = [
  "Savage", "Hendrix", "Moon", "Larsen", "Rocha", "Burgess", "Bailey", "Farley",
  "Moses", "Schmidt", "Brown", "Hoover", "Klein", "Jennings", "Braun", "Rangel",
  "Casey", "Dougherty", "Hancock", "Wolf", "Henry", "Thomas", "Bentley",
  "Barnett", "Kline", "Pitts", "Rojas", "Sosa", "Paul", "Hess", "Chase",
  "Mckay", "Bender", "Colins", "Montoya", "Townsend", "Potts", "Ayala", "Avery",
  "Sherman", "Tapia", "Hamilton", "Ferguson", "Huang", "Hooper", "Zamora",
  "Logan", "Lloyd", "Quinn", "Monroe", "Brock", "Ibarra", "Fowler", "Weiss",
  "Montgomery", "Diaz", "Dixon", "Olson", "Robertson", "Arias", "Benjamin",
  "Abbott", "Stein", "Schroeder", "Beck", "Velasquez", "Barber", "Nichols",
  "Ortiz", "Burns", "Moody", "Stokes", "Wilcox", "Rush", "Michael", "Kidd",
  "Rowland", "Mclean", "Saunders", "Chung", "Newton", "Potter", "Hickman",
  "Ray", "Larson", "Figueroa", "Duncan", "Sparks", "Rose", "Hodge", "Huynh",
  "Joseph", "Morales", "Beasley", "Mora", "Fry", "Ross", "Novak", "Hahn",
  "Wise", "Knight", "Frederick", "Heath", "Pollard", "Vega", "Mcclain",
  "Buckley", "Conrad", "Cantrell", "Bond", "Mejia", "Wang", "Lewis", "Johns",
  "Mcknight", "Callahan", "Reynolds", "Norris", "Burnett", "Carey", "Jacobson",
  "Oneill", "Oconnor", "Leonard", "Mckenzie", "Hale", "Delgado", "Spence",
  "Brandt", "Obrien", "Bowman", "James", "Avila", "Roberts", "Barker", "Cohen",
  "Bradley", "Prince", "Warren", "Summers", "Little", "Caldwell", "Garrett",
  "Hughes", "Norton", "Burke", "Holden", "Merritt", "Lee", "Frank", "Wiley",
  "Ho", "Weber", "Keith", "Winters", "Gray", "Watts", "Brady", "Aguilar",
  "Nicholson", "David", "Pace", "Cervantes", "Davis", "Baxter", "Sanchez",
  "Singleton", "Taylor", "Strickland", "Glenn", "Valentine", "Roy", "Cameron",
  "Beard", "Norman", "Fritz", "Anthony", "Koch", "Parrish", "Herman", "Hines",
  "Sutton", "Gallegos", "Stephenson", "Lozano", "Franklin", "Howe", "Bauer",
  "Love", "Ali", "Ellison", "Lester", "Guzman", "Jarvis", "Espinoza",
  "Fletcher", "Burton", "Woodard", "Peterson", "Barajas", "Richard", "Bryan",
  "Goodman", "Cline", "Rowe", "Faulkner", "Crawford", "Mueller", "Patterson",
  "Hull", "Walton", "Wu", "Flores", "York", "Dickson", "Barnes", "Fisher",
  "Strong", "Juarez", "Fitzgerald", "Schmitt", "Blevins", "Villa", "Sullivan",
  "Velazquez", "Horton", "Meadows", "Riley", "Barrera", "Neal", "Mendez",
  "Mcdonald", "Floyd", "Lynch", "Mcdowell", "Benson", "Hebert", "Livingston",
  "Davies", "Richardson", "Vincent", "Davenport", "Osborn", "Mckee", "Marshall",
  "Ferrell", "Martinez", "Melton", "Mercer", "Yoder", "Jacobs", "Mcdaniel",
  "Mcmillan", "Peters", "Atkinson", "Wood", "Briggs", "Valencia", "Chandler",
  "Rios", "Hunter", "Bean", "Hicks", "Hays", "Lucero", "Malone", "Waller",
  "Banks", "Myers", "Mitchell", "Grimes", "Houston", "Hampton", "Trujillo",
  "Perkins", "Moran", "Welch", "Contreras", "Montes", "Ayers", "Hayden",
  "Daniel", "Weeks", "Porter", "Gill", "Mullen", "Nolan", "Dorsey", "Crane",
  "Estes", "Lam", "Wells", "Cisneros", "Giles", "Watson", "Vang", "Scott",
  "Knox", "Hanna", "Fields",
]


def clean(json_string):
  # Strip JSON XSS Tag
  json_string = json_string.strip()
  if json_string.startswith(")]}'"):
    return json_string[5:]
  return json_string


def basic_auth(user):
  return requests.auth.HTTPBasicAuth(user["username"], user["http_password"])


def fetch_admin_group():
  global GROUP_ADMIN
  # Get admin group
  r = json.loads(clean(requests.get(BASE_URL + "groups/" + "?suggest=ad&p=All-Projects",
                                    headers=HEADERS,
                                    auth=ADMIN_BASIC_AUTH).text))
  admin_group_name = r.keys()[0]
  GROUP_ADMIN = r[admin_group_name]
  GROUP_ADMIN["name"] = admin_group_name


def generate_random_text():
  return " ".join([random.choice("lorem ipsum "
                                 "doleret delendam "
                                 "\n esse".split(" ")) for _ in range(1, 100)])


def set_up():
  global TMP_PATH
  TMP_PATH = tempfile.mkdtemp()
  atexit.register(clean_up)
  os.makedirs(TMP_PATH + "/ssh")
  os.makedirs(TMP_PATH + "/repos")
  fetch_admin_group()


def get_random_users(num_users):
  users = random.sample([(f, l) for f in FIRST_NAMES for l in LAST_NAMES],
                        num_users)
  names = []
  for u in users:
    names.append({"firstname": u[0],
                  "lastname": u[1],
                  "name": u[0] + " " + u[1],
                  "username": u[0] + u[1],
                  "email": u[0] + "." + u[1] + "@gerritcodereview.com",
                  "http_password": "secret",
                  "groups": []})
  return names


def generate_ssh_keys(gerrit_users):
  for user in gerrit_users:
    key_file = TMP_PATH + "/ssh/" + user["username"] + ".key"
    subprocess.check_output(["ssh-keygen", "-f", key_file, "-N", ""])
    with open(key_file + ".pub", "r") as f:
      user["ssh_key"] = f.read()


def create_gerrit_groups():
  groups = [
    {"name": "iOS-Maintainers", "description": "iOS Maintainers",
     "visible_to_all": True, "owner": GROUP_ADMIN["name"],
     "owner_id": GROUP_ADMIN["id"]},
    {"name": "Android-Maintainers", "description": "Android Maintainers",
     "visible_to_all": True, "owner": GROUP_ADMIN["name"],
     "owner_id": GROUP_ADMIN["id"]},
    {"name": "Backend-Maintainers", "description": "Backend Maintainers",
     "visible_to_all": True, "owner": GROUP_ADMIN["name"],
     "owner_id": GROUP_ADMIN["id"]},
    {"name": "Script-Maintainers", "description": "Script Maintainers",
     "visible_to_all": True, "owner": GROUP_ADMIN["name"],
     "owner_id": GROUP_ADMIN["id"]},
    {"name": "Security-Team", "description": "Sec Team",
     "visible_to_all": False, "owner": GROUP_ADMIN["name"],
     "owner_id": GROUP_ADMIN["id"]}]
  for g in groups:
    requests.put(BASE_URL + "groups/" + g["name"],
                 json.dumps(g),
                 headers=HEADERS,
                 auth=ADMIN_BASIC_AUTH)
  return [g["name"] for g in groups]


def create_gerrit_projects(owner_groups):
  projects = [
    {"id": "android", "name": "Android", "parent": "All-Projects",
     "branches": ["master"], "description": "Our android app.",
     "owners": [owner_groups[0]], "create_empty_commit": True},
    {"id": "ios", "name": "iOS", "parent": "All-Projects",
     "branches": ["master"], "description": "Our ios app.",
     "owners": [owner_groups[1]], "create_empty_commit": True},
    {"id": "backend", "name": "Backend", "parent": "All-Projects",
     "branches": ["master"], "description": "Our awesome backend.",
     "owners": [owner_groups[2]], "create_empty_commit": True},
    {"id": "scripts", "name": "Scripts", "parent": "All-Projects",
     "branches": ["master"], "description": "some small scripts.",
     "owners": [owner_groups[3]], "create_empty_commit": True}]
  for p in projects:
    requests.put(BASE_URL + "projects/" + p["name"],
                 json.dumps(p),
                 headers=HEADERS,
                 auth=ADMIN_BASIC_AUTH)
  return [p["name"] for p in projects]


def create_gerrit_users(gerrit_users):
  for user in gerrit_users:
    requests.put(BASE_URL + "accounts/" + user["username"],
                 json.dumps(user),
                 headers=HEADERS,
                 auth=ADMIN_BASIC_AUTH)


def create_change(user, project_name):
  random_commit_message = generate_random_text()
  change = {
    "project": project_name,
    "subject": random_commit_message.split("\n")[0],
    "branch": "master",
    "status": "NEW",
  }
  requests.post(BASE_URL + "changes/",
                json.dumps(change),
                headers=HEADERS,
                auth=basic_auth(user))


def clean_up():
  shutil.rmtree(TMP_PATH)


def main():
  p = optparse.OptionParser()
  p.add_option("-u", "--user_count", action="store",
               default=100,
               type='int',
               help="number of users to generate")
  p.add_option("-p", "--port", action="store",
               default=8080,
               type='int',
               help="port of server")
  (options, _) = p.parse_args()
  global BASE_URL
  BASE_URL = BASE_URL % options.port
  print(BASE_URL)

  set_up()
  gerrit_users = get_random_users(options.user_count)

  group_names = create_gerrit_groups()
  for idx, u in enumerate(gerrit_users):
    u["groups"].append(group_names[idx % len(group_names)])
    if idx % 5 == 0:
      # Also add to security group
      u["groups"].append(group_names[4])

  generate_ssh_keys(gerrit_users)
  create_gerrit_users(gerrit_users)

  project_names = create_gerrit_projects(group_names)

  for idx, u in enumerate(gerrit_users):
    for _ in range(random.randint(1, 5)):
      create_change(u, project_names[4 * idx / len(gerrit_users)])

main()