package specialist_test

import (
	"context"
	"errors"
	"testing"

	"github.com/google/uuid"
	"github.com/rs/zerolog"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"
	"github.com/stretchr/testify/require"

	appMock "base/internal/application/mock"
	"base/internal/application/specialist"
	domainAsset "base/internal/domain/asset"
	domainProfile "base/internal/domain/profile"
)

func TestSpecialistService_Overview(t *testing.T) {
	ctx := context.Background()
	logger := zerolog.Nop()
	userID := uuid.New()
	profileID := uuid.New()

	t.Run("success - returns overview with profile, assets, tasks", func(t *testing.T) {
		assetRepo := new(appMock.MockAssetRepository)
		profileRepo := new(appMock.MockProfileRepository)

		profile := &domainProfile.Profile{
			ID:     profileID,
			Handle: "specialist-user",
			UserID: &userID,
			Hero: domainProfile.Hero{
				FirstName:        "Jane",
				LastName:         "Doe",
				ShortDescription: "ML Engineer",
			},
			About: domainProfile.About{
				ProfilePicture: "avatar.jpg",
				About:          "About me",
			},
			Skills: []domainProfile.Skill{
				{SkillName: "Go", Level: "expert"},
			},
			Contact: domainProfile.Contact{
				Email:       "jane@example.com",
				SocialLinks: []domainProfile.SocialLink{{LinkType: "github", Link: "https://github.com/jane"}},
			},
			PageSetting: domainProfile.PageSetting{VisibilityLevel: "public"},
		}

		asset := &domainAsset.Asset{
			ID:              uuid.New(),
			ProfileID:       profileID,
			Status:          domainAsset.StatusPublished,
			AssetCategoryID: uuid.New(),
			Title:           "My Project",
			Description:     "A cool project",
			AssetArtifacts:  []domainAsset.Artifact{{Type: "image", DownloadURL: "cover.png", Price: 0}},
		}

		otherProfile := &domainProfile.Profile{
			ID:     uuid.New(),
			Handle: "other-user",
			Hero:   domainProfile.Hero{FirstName: "Other", LastName: "User"},
			PageSetting: domainProfile.PageSetting{VisibilityLevel: "public"},
		}

		profileRepo.On("FindByUserID", ctx, userID).Return(profile, nil)
		assetRepo.On("FindByProfileID", ctx, profileID).Return([]*domainAsset.Asset{asset}, nil)
		profileRepo.On("FindAll", ctx, mock.MatchedBy(func(arg interface{}) bool {
			f, ok := arg.(domainProfile.Filter)
			if !ok {
				return false
			}
			return f.Page == 1 && f.PageSize == 6 && f.SortedBy == "created_at" && !f.Ascending
		})).Return([]*domainProfile.Profile{otherProfile}, 26, nil)
		assetRepo.On("Count", ctx).Return(42, nil)

		svc := specialist.New(specialist.Param{
			Logger:      logger,
			ProfileRepo: profileRepo,
			AssetRepo:   assetRepo,
		})

		resp, err := svc.Overview(ctx, userID)
		require.NoError(t, err)
		require.NotNil(t, resp)

		assert.Equal(t, "", resp.Message)
		assert.Len(t, resp.Data.Assets, 1)
		assert.Equal(t, "My Project", resp.Data.Assets[0].Title)

		assert.Len(t, resp.Data.RecentlyJoined, 1)
		assert.Equal(t, "other-user", resp.Data.RecentlyJoined[0].ProfileHandle)

		assert.Equal(t, 42, resp.Data.Analytics.TotalAssets)
		assert.Equal(t, 26, resp.Data.Analytics.TotalProfiles)

		require.NotNil(t, resp.Data.Profile)
		assert.Equal(t, "specialist-user", resp.Data.Profile.Handle)
		assert.Len(t, resp.Data.Skills, 1)
		assert.Equal(t, "Go", resp.Data.Skills[0].SkillName)

		// All sections complete -> 100% or high completion
		assert.False(t, resp.Data.Tasks.ProfileAction)
		assert.False(t, resp.Data.Tasks.AboutAction)
		assert.False(t, resp.Data.Tasks.PublishAction)
		assert.False(t, resp.Data.Tasks.WorksAction)
		assert.False(t, resp.Data.Tasks.SkillsAction)
		assert.False(t, resp.Data.Tasks.SocialAction)
		assert.Equal(t, 100, resp.Data.CompletionPercent)

		assetRepo.AssertExpectations(t)
		profileRepo.AssertExpectations(t)
	})

	t.Run("profile not found returns ErrProfileNotFound", func(t *testing.T) {
		assetRepo := new(appMock.MockAssetRepository)
		profileRepo := new(appMock.MockProfileRepository)

		profileRepo.On("FindByUserID", ctx, userID).Return(nil, domainProfile.ErrProfileNotFound)

		svc := specialist.New(specialist.Param{
			Logger:      logger,
			ProfileRepo: profileRepo,
			AssetRepo:   assetRepo,
		})

		resp, err := svc.Overview(ctx, userID)
		assert.Error(t, err)
		assert.True(t, errors.Is(err, domainProfile.ErrProfileNotFound))
		assert.Nil(t, resp)

		profileRepo.AssertExpectations(t)
	})

	t.Run("incomplete profile computes tasks and completion percent", func(t *testing.T) {
		assetRepo := new(appMock.MockAssetRepository)
		profileRepo := new(appMock.MockProfileRepository)

		profile := &domainProfile.Profile{
			ID:     profileID,
			Handle: "incomplete",
			UserID: &userID,
			Hero:   domainProfile.Hero{FirstName: "A"}, // missing LastName, ShortDescription
			About:  domainProfile.About{},              // missing picture, about
			Skills: []domainProfile.Skill{},
			PageSetting: domainProfile.PageSetting{VisibilityLevel: "private"},
		}

		profileRepo.On("FindByUserID", ctx, userID).Return(profile, nil)
		assetRepo.On("FindByProfileID", ctx, profileID).Return([]*domainAsset.Asset{}, nil)
		profileRepo.On("FindAll", ctx, mock.Anything).Return([]*domainProfile.Profile{}, 0, nil)
		assetRepo.On("Count", ctx).Return(0, nil)

		svc := specialist.New(specialist.Param{
			Logger:      logger,
			ProfileRepo: profileRepo,
			AssetRepo:   assetRepo,
		})

		resp, err := svc.Overview(ctx, userID)
		require.NoError(t, err)
		require.NotNil(t, resp)

		assert.True(t, resp.Data.Tasks.ProfileAction)
		assert.True(t, resp.Data.Tasks.AboutAction)
		assert.True(t, resp.Data.Tasks.PublishAction)
		assert.True(t, resp.Data.Tasks.WorksAction)
		assert.True(t, resp.Data.Tasks.SkillsAction)
		assert.True(t, resp.Data.Tasks.SocialAction)
		assert.Equal(t, 0, resp.Data.CompletionPercent)
	})
}