package service

import (
	"testing"

	"infinite-canvas/backend/internal/model"
)

func TestNormalizeChannelModelContract(t *testing.T) {
	channel := &model.ModelChannel{APIKey: "test-key"}
	modelKey, capability, protocol, err := normalizeChannelModelContract(channel, ChannelModelRequest{
		ModelKey: "models/gpt-test", Capability: "text", Protocol: string(model.ChannelInterfaceChatCompletion),
	})
	if err != nil {
		t.Fatalf("normalizeChannelModelContract() error = %v", err)
	}
	if modelKey != "gpt-test" || capability != "text" || protocol != model.ChannelInterfaceChatCompletion {
		t.Fatalf("contract = %q, %q, %q", modelKey, capability, protocol)
	}
}

func TestNormalizeChannelModelContractRejectsCapabilityMismatch(t *testing.T) {
	channel := &model.ModelChannel{APIKey: "test-key"}
	_, _, _, err := normalizeChannelModelContract(channel, ChannelModelRequest{
		ModelKey: "image-test", Capability: "text", Protocol: string(model.ChannelInterfaceOpenAIImage),
	})
	if err == nil {
		t.Fatal("normalizeChannelModelContract() should reject a mismatched capability")
	}
}

func TestNormalizeChannelModelContractRequiresJiMengSecret(t *testing.T) {
	channel := &model.ModelChannel{APIKey: "access-key"}
	_, _, _, err := normalizeChannelModelContract(channel, ChannelModelRequest{
		ModelKey: "jimeng-test", Capability: "image", Protocol: string(model.ChannelInterfaceVolcengineJiMengImage),
	})
	if err == nil {
		t.Fatal("normalizeChannelModelContract() should require JiMeng credentials")
	}
}

func TestImageTestDefaultsUseModelCapability(t *testing.T) {
	tests := []struct {
		name        string
		profile     *ImageCapabilityConfig
		wantSize    string
		wantQuality string
	}{
		{name: "legacy fallback", wantSize: "1024x1024", wantQuality: "auto"},
		{
			name: "fixed 2k model",
			profile: &ImageCapabilityConfig{
				Size:    ImageSizeConfig{Parameter: "size", Default: "2048x2048"},
				Quality: ImageQualityConfig{Supported: false, Default: "auto"},
			},
			wantSize: "2048x2048",
		},
		{
			name: "provider selected size",
			profile: &ImageCapabilityConfig{
				Size:    ImageSizeConfig{Parameter: "none", Default: "auto"},
				Quality: ImageQualityConfig{Supported: false},
			},
		},
		{
			name: "gpt image capability",
			profile: &ImageCapabilityConfig{
				Size:    ImageSizeConfig{Parameter: "size", Default: "1024x1536"},
				Quality: ImageQualityConfig{Supported: true, Default: "high"},
			},
			wantSize: "1024x1536", wantQuality: "high",
		},
	}
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			size, quality := imageTestDefaults(test.profile)
			if size != test.wantSize || quality != test.wantQuality {
				t.Fatalf("imageTestDefaults() = %q, %q; want %q, %q", size, quality, test.wantSize, test.wantQuality)
			}
		})
	}
}