/// <summary>
/// Renders the high-level switch action instance into zero or more <see cref="SwitchExecuteAction" />
/// instances and then adds these to the <see cref="ActionRenderingContext" />.<see cref="ActionRenderingContext.Actions" />
/// collection.
/// </summary>
/// <param name="context">The action rendering context.</param>
/// <exception cref="NotSupportedException">Thrown for parameters that are not supported for the current execution context.</exception>
/// <remarks>
/// <note>
/// It is perfectly reasonable for an action to render no actions to the
/// context or to render multiple actions based on its properties.
/// </note>
/// </remarks>
public override void Render(ActionRenderingContext context)
{
if (callID1 != Guid.Empty && callID2 != Guid.Empty)
{
context.Actions.Add(new SwitchExecuteAction("uuid_bridge", "{0:D} {1:D}", callID1, callID2));
return;
}
// Special case FreeSWITCH style dialstrings.
if (dialstring != null)
{
if (context.IsDialplan)
{
context.Actions.Add(new SwitchExecuteAction("bridge", dialstring));
}
else
{
context.Actions.Add(new SwitchExecuteAction(CallID, "bridge", dialstring));
}
return;
}
if (endpoints.Count == 0)
{
throw new InvalidOperationException("Attempt to render a BridgeAction with no endpoints.");
}
// Add an action queue any DTMF digits.
if (queuedDtmfDigits != null && queuedDtmfDigits.Length > 0)
{
var duration = ToneDuration;
if (duration < Switch.MinDtmfDuration)
{
duration = Switch.MinDtmfDuration;
}
else if (duration > Switch.MaxDtmfDuration)
{
duration = Switch.MaxDtmfDuration;
}
if (context.IsDialplan)
{
context.Actions.Add(new SwitchExecuteAction("queue_dtmf", "{0}@{1}", queuedDtmfDigits, (int)duration.TotalMilliseconds));
}
else
{
context.Actions.Add(new SwitchExecuteAction(CallID, "queue_dtmf", "{0}@{1}", queuedDtmfDigits, (int)duration.TotalMilliseconds));
}
}
// Add any propety variables to the variables collection.
if (AnswerTimeout.HasValue)
{
Variables["call_timeout"] = SwitchHelper.GetScheduleSeconds(AnswerTimeout.Value).ToString();
}
if (BypassMedia.HasValue)
{
Variables["bypass_media"] = BypassMedia.Value ? "true" : "false";
}
if (Ringback.HasValue && Ringback.Value)
{
Variables["ringback"] = "${us-ring}";
}
if (CallerIDName != null)
{
Variables["effective_caller_id_name"] = CallerIDName;
}
if (CallerIDNumber != null)
{
Variables["effective_caller_id_number"] = CallerIDNumber;
}
// I'm not going to use the FreeSWITCH global channel variable syntax {..} at the beginning of
// the dialstring since this is really just a human friendly shortcut. Instead, I'm going
// to explicitly add any global variables that aren't overridden to each endpoint.
if (Variables.Count > 0)
{
foreach (var endpoint in Endpoints)
{
foreach (var variable in Variables)
{
if (!endpoint.Variables.ContainsKey(variable.Key))
{
endpoint.Variables[variable.Key] = variable.Value;
}
}
}
}
// Render the dialstring if there's only one endpoint.
if (endpoints.Count == 1)
{
if (context.IsDialplan)
{
context.Actions.Add(new SwitchExecuteAction("bridge", endpoints[0].ToString()));
}
else
{
context.Actions.Add(new SwitchExecuteAction(CallID, "bridge", endpoints[0].ToString()));
}
return;
}
// We have multiple endpoints so we need to render based on the bridge mode.
var sb = new StringBuilder();
switch (Mode)
{
case BridgeMode.LinearHunt:
foreach (var endpoint in endpoints)
{
sb.AppendFormat("{0},", endpoint);
}
break;
case BridgeMode.RandomHunt:
endpoints.Shuffle();
foreach (var endpoint in endpoints)
{
sb.AppendFormat("{0},", endpoint);
}
break;
case BridgeMode.RingAll:
foreach (var endpoint in endpoints)
{
sb.AppendFormat("{0}|", endpoint);
}
break;
}
if (sb.Length > 0)
{
sb.Length--;
}
if (context.IsDialplan)
{
context.Actions.Add(new SwitchExecuteAction("bridge", sb.ToString()));
}
else
{
context.Actions.Add(new SwitchExecuteAction(CallID, "bridge", sb.ToString()));
}
}
