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|
require "crypto/bcrypt"
class Guff::UserModel < Guff::Model
SQL = TemplateCache.new({
get_users: "
SELECT a.user_id,
a.created_at,
a.is_active,
a.user_name,
b.role_name,
c.email
FROM users a
JOIN roles b
ON (b.role_id = a.role_id)
JOIN user_logins c
ON (c.user_id = a.user_id)
ORDER BY LOWER(a.user_name)
",
add_user: "
INSERT INTO users(user_name) VALUES (:user_name)
",
edit_user: "
UPDATE users
SET %{sets}
WHERE user_id = :user_id
",
delete_login: "
DELETE FROM user_logins WHERE user_id = :user_id
",
add_login: "
INSERT INTO user_logins(user_id, email, pass_hash) VALUES
(:user_id, :email, :pass_hash)
",
edit_login: "
UPDATE user_logins
SET %{sets}
WHERE user_id = :user_id
",
login: "
SELECT a.user_id,
a.pass_hash
FROM user_logins a
JOIN users b
ON (b.user_id = a.user_id AND
b.is_active)
WHERE a.email = :email
",
})
def initialize(models : Models)
super(models, SQL)
end
def get_users
r = [] of Hash(String, Int64 | String | Bool)
all(:get_users, nil, nil) do |row|
r << {
"user_id": row["user_id"] as Int64,
"created_at": row["created_at"] as String,
"is_active": ((row["is_active"] as Int64) == 1),
"user_name": row["user_name"] as String,
"role_name": row["role_name"] as String,
"email": row["email"] as String,
}
end
r
end
def add_user(
name : String,
active : Bool? = nil,
role : String? = nil,
email : String? = nil,
password : String? = nil,
)
user_id = -1_i64
transaction do
# add user
query(:add_user, {
"user_name": name
}, nil)
# get user_id
user_id = last_insert_row_id as Int64
# set active and/or role
if active || role
edit_user(user_id,
active: active,
role: role,
)
end
# add login
if email || password
add_login(user_id,
email.not_nil!,
password.not_nil!
)
end
end
# return id
user_id
end
def edit_user(
user_id : Int64,
name : String? = nil,
active : Bool? = nil,
role : String? = nil,
email : String? = nil,
password : String? = nil,
)
transaction do
sets = [] of String
args = { "user_id": user_id.to_s }
if name != nil
args["name"] = name.not_nil!
sets << "user_name = :name"
end
if active != nil
args["is_active"] = active.not_nil! ? "1" : "0"
sets << "is_active = :is_active"
end
if role != nil
args["role"] = role.not_nil!
sets << "
role_id = (SELECT role_id
FROM roles
WHERE role_name = :role)
"
end
# exec query
query(:edit_user, args, {
"sets": sets.join(", "),
}) if sets.size > 0
if email != nil || password != nil
edit_login(user_id, email, password)
end
end
end
def delete_login(user_id : Int64)
query(:delete_login, {
"user_id": user_id.to_s
}, nil)
end
def add_login(
user_id : Int64,
email : String,
password : String,
)
# hash password
pass_hash = hash_password(password)
transaction do
# clear old credentials
delete_login(user_id)
# add new credentials
query(:add_login, {
"user_id": user_id.to_s,
"email": email,
"pass_hash": pass_hash,
}, nil)
end
end
private def edit_login(
user_id : Int64,
email : String? = nil,
password : String? = nil,
)
transaction do
sets = [] of String
args = { "user_id": user_id.to_s }
if email != nil
args["email"] = email.not_nil!
sets << "email = :email"
end
if password != nil
args["pass_hash"] = hash_password(password.not_nil!)
sets << "pass_hash = :pass_hash"
end
# exec query
query(:edit_login, args, {
"sets": sets.join(", "),
}) if sets.size > 0
end
end
def login(
email : String,
password : String
)
# map email to user id and pass hash
row = row(:login, {
"email": email,
}, nil)
raise "invalid login" unless row
# shut compiler up
row = row.not_nil!
# get pass hash from db
pass_hash = Crypto::Bcrypt::Password.new(row["pass_hash"].to_s)
# compare hash against password
raise "invalid login" unless pass_hash == password
# return user id
row["user_id"] as Int64
end
private def hash_password(password : String)
# TODO: check password strength
raise "password too short" if password.size < 4
# hash password
Crypto::Bcrypt::Password.create(password, cost: 10).to_s
end
end
|
