package ai

import (
	"bytes"
	"testing"
)

func TestTaskFieldsWinOverSameDifferentAndNullParamValues(t *testing.T) {
	for _, name := range []string{"same", "different", "null"} {
		t.Run(name, func(t *testing.T) {
			task, providers := currentFixture(t, "full_ai")
			canonical, err := Bind(task, providers)
			if err != nil {
				t.Fatal(err)
			}
			task = changeCurrentAgent(t, task, func(agent map[string]any) {
				asrModel, llmModel, voice := any("ignored-model"), any("ignored-model"), any("ignored-voice")
				if name == "same" {
					asrModel, llmModel, voice = canonical.ASR.Model, canonical.LLM.Model, canonical.TTS.Voice
				} else if name == "null" {
					asrModel, llmModel, voice = nil, nil, nil
				}
				agent["asr"].(map[string]any)["params"] = map[string]any{"model_name": asrModel, "reqid": "ignored-id", "sequence": 99, "opaque": false}
				agent["llm"].(map[string]any)["params"] = map[string]any{"model": llmModel, "messages": "ignored-messages", "opaque": false}
				agent["tts"].(map[string]any)["params"] = map[string]any{"voice": voice, "opaque": false}
			})
			original := append([]byte(nil), task.Raw...)
			bound, err := Bind(task, providers)
			if err != nil {
				t.Fatalf("duplicate opaque params must not reject the task: %v", err)
			}
			if bound.ASR.Model != canonical.ASR.Model || bound.LLM.Model != canonical.LLM.Model || bound.TTS.Voice != canonical.TTS.Voice {
				t.Fatal("params changed canonical task fields")
			}
			if string(bound.ASR.Params["opaque"]) != "false" || string(bound.LLM.Params["opaque"]) != "false" || string(bound.TTS.Params["opaque"]) != "false" {
				t.Fatal("nonconflicting opaque params were changed")
			}
			if !bytes.Equal(original, task.Raw) {
				t.Fatal("binding changed the approved task snapshot")
			}
		})
	}
}