package rpc

import (
	"context"
	"errors"
	"reflect"

	"git.ipao.vip/rogee/go-sip/internal/ai"
	"git.ipao.vip/rogee/go-sip/internal/callflow"
)

// RunApprovedCall is the isolated Agent media entry point. Both the
// Dispatcher-signed call limit and the immutable AI conversation limit apply;
// neither missing media nor a missing hangup adapter can silently proceed.
func missingApprovedAdapter(value any) bool {
	if value == nil {
		return true
	}
	v := reflect.ValueOf(value)
	return v.Kind() == reflect.Pointer && v.IsNil()
}

func RunApprovedCall(ctx context.Context, approved ApprovedExecution, session callflow.MediaSession, hangup func(context.Context) error, pipeline callflow.ApprovedPipeline) (callflow.Result, error) {
	if missingApprovedAdapter(session) || hangup == nil || missingApprovedAdapter(pipeline) || approved.MaxCallDuration <= 0 {
		return callflow.Result{}, errors.New("approved Agent media, hangup, pipeline and signed call duration are required")
	}
	if approved.AI.Mode != string(ai.ModeFullAI) && approved.AI.Mode != string(ai.ModeASROnly) {
		return callflow.Result{}, errors.New("approved AI mode is unsupported")
	}
	ctx, cancel := context.WithTimeout(ctx, approved.MaxCallDuration)
	defer cancel()
	return callflow.ExecuteApproved(ctx, session, ai.Mode(approved.AI.Mode), pipeline, callflow.ApprovedCapture(approved.AI))
}