package article

import (
	"net/http"
	"scrap/api/httpio"
	"scrap/internal/article"
	"scrap/internal/db"
)

func ArticleDownloadHandler(w http.ResponseWriter, r *http.Request) {
	dbInstance := db.GetInstance()
	txRepo := db.NewTxRepository(dbInstance)
	articleRepo := article.NewArticleRepository()

	service := article.NewArticleService(txRepo, articleRepo)
	if err := service.DownloadArticles(); err != nil {
		switch err {
		default:
			httpio.RaiseOnlyStatusCode(w, http.StatusInternalServerError)
		}

		return
	}
}

func ArticleQueryHandler(w http.ResponseWriter, r *http.Request) {
	body, err := httpio.ParseURLQuery[ArticleQueryRequest](
		r,
		httpio.URLQueryKey[string]("title"),
	)
	if err != nil {
		httpio.RaiseOnlyStatusCode(w, http.StatusInternalServerError)
		return
	}

	if httpErr := body.Validate(); httpErr != nil {
		httpErr.Raise(w)
		return
	}

	dbInstance := db.GetInstance()
	txRepo := db.NewTxRepository(dbInstance)
	articleRepo := article.NewArticleRepository()

	service := article.NewArticleService(txRepo, articleRepo)

	articleQueryData := article.ArticleQueryDTO{
		Title: body.Title,
	}

	articles, err := service.QueryArticles(articleQueryData)
	if err != nil {
		switch err {
		case article.ErrArticleTitleInvalidLength:
			ErrHttpArticleTitleInvalidLength.Raise(w)
		default:
			httpio.RaiseOnlyStatusCode(w, http.StatusInternalServerError)
		}

		return
	}

	articlesOut := make([]ArticleResponse, 0, len(articles))
	for _, a := range articles {
		ar := ArticleResponse{
			Uuid:    a.Uuid,
			Title:   a.Title,
			Content: a.Content,
		}

		articlesOut = append(articlesOut, ar)
	}

	if err = ArticleQueryResponse(articlesOut).Return(w, http.StatusOK); err != nil {
		httpio.RaiseOnlyStatusCode(w, http.StatusInternalServerError)
		return
	}
}