forked from leeprovoost/go-rest-api-template
/
database.go
75 lines (66 loc) · 1.66 KB
/
database.go
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package main
import "errors"
// DataStorer defines all the database operations
type DataStorer interface {
List() (map[string]User, error)
Get(i int) (User, error)
Add(u User) (User, error)
Update(u User) (User, error)
Delete(i int) (bool, error)
}
// Database will hold the connection and key db info
type Database struct {
UserList map[int]User
MaxUserID int
}
var db *Database
// List returns a list of JSON documents
func (db *Database) List() (map[string][]User, error) {
var list []User
for _, v := range db.UserList {
list = append(list, v)
}
responseObject := make(map[string][]User)
responseObject["users"] = list
return responseObject, nil
}
// Get a single JSON document
func (db *Database) Get(i int) (User, error) {
user, ok := db.UserList[i]
if !ok {
return user, errors.New("user does not exist")
}
return user, nil
}
// Add a User JSON document, returns the JSON document with the generated id
func (db *Database) Add(u User) (User, error) {
db.MaxUserID = db.MaxUserID + 1
newUser := User{
ID: db.MaxUserID,
FirstName: u.FirstName,
LastName: u.LastName,
DateOfBirth: u.DateOfBirth,
LocationOfBirth: u.LocationOfBirth,
}
db.UserList[db.MaxUserID] = newUser
return newUser, nil
}
// Update an existing user
func (db *Database) Update(u User) (User, error) {
id := u.ID
_, ok := db.UserList[id]
if !ok {
return u, errors.New("user does not exist")
}
db.UserList[id] = u
return db.UserList[id], nil
}
// Delete a user
func (db *Database) Delete(i int) (bool, error) {
_, ok := db.UserList[i]
if !ok {
return false, errors.New("could not delete this user")
}
delete(db.UserList, i)
return true, nil
}