package repository

import (
	"context"
	"database/sql"
	"errors"
	"kontor-api-echo/internal/helpers"
	"kontor-api-echo/internal/models"
	"log/slog"
	"time"

	"github.com/google/uuid"
	"github.com/labstack/echo/v5"
	"github.com/uptrace/bun"
)

type MediaVideoRepository struct {
	db *bun.DB
}

func (repository *MediaVideoRepository) Import(dtos models.MediaVideoDTOList) {
	slog.Info("MediaVideoRepository#Import")
	for index, dto := range dtos {
		slog.Info("importing", "index", index, "video", dto)
		model := dto.ConvertDTOToModel()
		existing_item := models.MediaVideo{ID: dto.ID}
		err := repository.db.NewSelect().Model(&existing_item).Where("id = ?", dto.ID).Scan(context.Background())
		if err != nil {
			slog.Info("check existing id: not found - inserting")
			_, err := repository.db.NewInsert().Model(&model).Exec(context.Background())
			if err != nil {
				slog.Info("error during import", "error", err.Error())
			}
		} else {
			slog.Info("check existing id: found - updating")
			_, err := repository.db.NewUpdate().Model(&model).
				Set("updated_at = ? ", time.Now).
				Where("id = ?", model.ID).
				Exec(context.Background())
			if err != nil {
				slog.Info("error during updating", "error", err.Error())
			}
		}
	}
}

func NewMediaVideoRepository(db *bun.DB) *MediaVideoRepository {
	repo := &MediaVideoRepository{db: db}
	return repo
}

func (repository *MediaVideoRepository) FindAll(context context.Context) ([]models.MediaVideo, error) {
	var videos []models.MediaVideo

	err := repository.db.NewSelect().Model(&videos).Scan(context)
	if err != nil {
		slog.Info(err.Error())
		return nil, echo.ErrInternalServerError
	}
	slog.Info("MediaVideoRepository#FindAll", "count", len(videos))

	return videos, nil
}

func (repository *MediaVideoRepository) GetById(context context.Context, id string) (*models.MediaVideo, error) {
	var video models.MediaVideo
	slog.Info("MediaVideoRepository#GetById", "id", id)
	err := repository.db.NewSelect().Model(&video).Where("id = ?", id).Scan(context)
	if err != nil {
		return nil, err
	}
	return &video, nil
}

func (repository *MediaVideoRepository) Add(context context.Context, url string) (*models.MediaVideo, error) {
	slog.Info("MediaVideoRepository#Add", "url", url)
	webLink := helpers.StripUrl(url, "v")
	var model models.MediaVideo
	err := repository.db.NewSelect().Model(&model).Where("url = ?", url).Scan(context)
	if errors.Is(err, sql.ErrNoRows) {
		slog.Info("MediaMusicRepository#Add URL not found", "url", webLink)
		video := models.MediaVideo{
			ID:             uuid.NewString(),
			CreatedAt:      time.Now(),
			UpdatedAt:      time.Now(),
			DeletedAt:      nil,
			Version:        0,
			WebLink:        webLink,
			ShouldDownload: false,
			Review:         true,
			Title:          "",
			FileName:       "",
		}
		_, add_error := repository.db.NewInsert().Model(&model).Exec(context)
		if add_error != nil {
			slog.Info("add new MediaMusic", "error", add_error)
			return nil, add_error
		}
		slog.Info("add new MediaMusic", "lofi", video)
		return &video, nil
	} else {
		slog.Info("search for existing url", "lofi", model)
		return &model, nil
	}
}

func (repository *MediaVideoRepository) Update(context context.Context, update models.MediaVideoDTO) (*models.MediaVideo, error) {
	slog.Info("MediaVideoRepository#Update", "video", update)
	var video models.MediaVideo
	slog.Info("MediaVideoRepository#Update", "id", update.ID)
	err := repository.db.NewSelect().Model(&video).Where("id = ?", update.ID).Scan(context)
	if err != nil {
		return nil, err
	}
	_, err = repository.db.NewUpdate().Model(&video).
		Set("updated_at = ? ", time.Now).
		Where("id = ?", update.ID).
		Exec(context)
	if err != nil {
		slog.Info("error during updating", "error", err.Error())
	}
	return &video, nil
}

func (repository *MediaVideoRepository) Delete(context context.Context, id string) error {
	slog.Info("MediaVideoRepository#Delete", "id", id)
	_, err := repository.db.NewDelete().Model((*models.MediaVideo)(nil)).Where("id = ?", id).Exec(context)
	if err != nil {
		slog.Info("MediaVideoRepository#Delete", "error", err.Error())
	}
	return err
}