package model

import (
	"testing"
)

func newTestRepo() *Repository {
	return &Repository{
		models: []Model{
			{
				ID:                "model-1",
				Name:              "YOLOv8",
				Description:       "Object detection model",
				TaskType:          "object_detection",
				SupportedHardware: []string{"KL720", "KL730"},
			},
			{
				ID:                "model-2",
				Name:              "ResNet",
				Description:       "Classification model",
				TaskType:          "classification",
				SupportedHardware: []string{"KL720"},
			},
			{
				ID:       "custom-1",
				Name:     "My Custom Model",
				TaskType: "object_detection",
				IsCustom: true,
			},
		},
	}
}

func TestRepository_List(t *testing.T) {
	repo := newTestRepo()

	tests := []struct {
		name          string
		filter        ModelFilter
		expectedCount int
	}{
		{"no filter", ModelFilter{}, 3},
		{"filter by task type", ModelFilter{TaskType: "object_detection"}, 2},
		{"filter by hardware", ModelFilter{Hardware: "KL730"}, 1},
		{"filter by query", ModelFilter{Query: "YOLO"}, 1},
		{"query case insensitive", ModelFilter{Query: "resnet"}, 1},
		{"no matches", ModelFilter{TaskType: "segmentation"}, 0},
		{"combined filters", ModelFilter{TaskType: "object_detection", Query: "YOLO"}, 1},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			results, count := repo.List(tt.filter)
			if count != tt.expectedCount {
				t.Errorf("List() count = %d, want %d", count, tt.expectedCount)
			}
			if len(results) != tt.expectedCount {
				t.Errorf("List() len(results) = %d, want %d", len(results), tt.expectedCount)
			}
		})
	}
}

func TestRepository_GetByID(t *testing.T) {
	repo := newTestRepo()

	tests := []struct {
		name    string
		id      string
		wantErr bool
	}{
		{"existing model", "model-1", false},
		{"another existing", "model-2", false},
		{"non-existing", "model-999", true},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			m, err := repo.GetByID(tt.id)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetByID() error = %v, wantErr %v", err, tt.wantErr)
			}
			if !tt.wantErr && m.ID != tt.id {
				t.Errorf("GetByID() ID = %s, want %s", m.ID, tt.id)
			}
		})
	}
}

func TestRepository_Add(t *testing.T) {
	repo := &Repository{models: []Model{}}

	m := Model{ID: "new-1", Name: "New Model"}
	repo.Add(m)

	if repo.Count() != 1 {
		t.Errorf("Count() = %d, want 1", repo.Count())
	}
}

func TestRepository_Remove(t *testing.T) {
	repo := newTestRepo()

	tests := []struct {
		name    string
		id      string
		wantErr bool
	}{
		{"remove custom model", "custom-1", false},
		{"cannot remove built-in", "model-1", true},
		{"not found", "model-999", true},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			err := repo.Remove(tt.id)
			if (err != nil) != tt.wantErr {
				t.Errorf("Remove() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}