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auth.go
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auth.go
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package writeas
import (
"context"
"fmt"
"net/http"
)
// LogIn authenticates a user with Write.as.
// See https://developers.write.as/docs/api/#authenticate-a-user
func (c *Client) LogIn(ctx context.Context, username, pass string) (*AuthUser, error) {
u := &AuthUser{}
up := struct {
Alias string `json:"alias"`
Pass string `json:"pass"`
}{
Alias: username,
Pass: pass,
}
env, err := c.post(ctx, "/auth/login", up, u)
if err != nil {
return nil, err
}
var ok bool
if u, ok = env.Data.(*AuthUser); !ok {
return nil, fmt.Errorf("Wrong data returned from API.")
}
status := env.Code
if status != http.StatusOK {
if status == http.StatusBadRequest {
return nil, fmt.Errorf("Bad request: %s", env.ErrorMessage)
} else if status == http.StatusUnauthorized {
return nil, fmt.Errorf("Incorrect password.")
} else if status == http.StatusNotFound {
return nil, fmt.Errorf("User does not exist.")
} else if status == http.StatusTooManyRequests {
return nil, fmt.Errorf("Too many log in attempts in a short period of time.")
}
return nil, fmt.Errorf("Problem authenticating: %d. %v\n", status, err)
}
c.SetToken(u.AccessToken)
return u, nil
}
// LogOut logs the current user out, making the Client's current access token
// invalid.
func (c *Client) LogOut(ctx context.Context) error {
env, err := c.delete(ctx, "/auth/me", nil)
if err != nil {
return err
}
status := env.Code
if status != http.StatusNoContent {
if status == http.StatusNotFound {
return fmt.Errorf("Access token is invalid or doesn't exist")
}
return fmt.Errorf("Unable to log out: %v", env.ErrorMessage)
}
// Logout successful, so update the Client
c.token = ""
return nil
}
func (c *Client) isNotLoggedIn(code int) bool {
if c.token == "" {
return false
}
return code == http.StatusUnauthorized
}

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