### Complete Calcurse-CalDAV Configuration Example

Source: https://calcurse.org/files/calcurse-caldav.html

A comprehensive example of a calcurse-caldav configuration file for a Gmail account, including OAuth2 credentials and synchronization settings.

```config
[General]

...

Hostname = apidata.googleusercontent.com
Path = /caldav/v2/example@gmail.com/events/
AuthMethod = oauth2
SyncFilter = cal

...

[OAuth2]
ClientID = 22802342jlkjlksjdlfkjq1htpvbcn.apps.googleusercontent.com
ClientSecret = XPYGqHFsfF343GwJeOGiUi
Scope = https://www.googleapis.com/auth/calendar
RedirectURI = http://127.0.0.1
```

--------------------------------

### Secure Password Authentication with Environment Variable

Source: https://calcurse.org/files/calcurse-caldav.html

Pass the password securely using the CALCURSE_CALDAV_PASSWORD environment variable, for example, with the 'pass' utility.

```bash
CALCURSE_CALDAV_PASSWORD=$(pass show calcurse) calcurse-caldav
```

--------------------------------

### OAuth2 Authentication Configuration

Source: https://calcurse.org/files/calcurse-caldav.html

To enable OAuth2 authentication, modify the AuthMethod in the config file to 'oauth2' and provide the necessary ClientID, ClientSecret, Scope, and RedirectURI obtained from the API provider. Ensure the 'oauth2client' library is installed.

```ini
AuthMethod: "oauth2"
ClientID: "..."
ClientSecret: "..."
Scope: "..."
RedirectURI: "..."
```

--------------------------------

### Calcurse-CalDAV Initialization Modes

Source: https://calcurse.org/files/calcurse-caldav.html

Use these arguments when running calcurse-caldav for the first time to set the synchronization direction.

```bash
--init=keep-remote Remove all local calcurse items and import remote objects
```

```bash
--init=keep-local  Remove all remote objects and push local calcurse items
```

```bash
--init=two-way     Copy local objects to the CalDAV server and vice versa
```

--------------------------------

### Initializing Synchronization with Authorization Code

Source: https://calcurse.org/files/calcurse-caldav.html

This command initializes the calcurse-caldav synchronization process after obtaining an authorization code. The `--init keep-remote` flag ensures remote data is kept, and the `--authcode` flag provides the necessary authorization.

```bash
calcurse-caldav --init keep-remote --authcode '4/Ok6mBNW2nppfIwyL-Q1ZPVkEk3zZdZN3mHcY#'
```

--------------------------------

### Calcurse-CalDAV Configuration Parameters

Source: https://calcurse.org/files/calcurse-caldav.html

These parameters are essential for setting up the connection to Google Calendar. Ensure the Path is correctly formatted with your Calendar ID.

```config
Hostname = apidata.googleusercontent.com
Path = /caldav/v2/*your_calendar_id_here*/events/
Scope = https://www.googleapis.com/auth/calendar
SyncFilter = cal
```

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