package fr.dcproject.component.article.routes

import fr.dcproject.component.article.ArticleForView
import fr.dcproject.component.article.ArticleRepository
import fr.dcproject.component.article.ArticleVoter
import fr.dcproject.component.auth.citizenOrNull
import fr.dcproject.voter.assert
import fr.postgresjson.repository.RepositoryI
import io.ktor.application.call
import io.ktor.locations.KtorExperimentalLocationsAPI
import io.ktor.locations.Location
import io.ktor.locations.get
import io.ktor.response.respond
import io.ktor.routing.Route

@KtorExperimentalLocationsAPI
object FindArticleVersions {
    @Location("/articles/{article}/versions")
    class ArticleVersionsRequest(
        val article: ArticleForView,
        page: Int = 1,
        limit: Int = 50,
        val sort: String? = null,
        val direction: RepositoryI.Direction? = null,
        val search: String? = null
    ) {
        val page: Int = if (page < 1) 1 else page
        val limit: Int = if (limit > 50) 50 else if (limit < 1) 1 else limit
    }

    private fun ArticleRepository.findVersions(request: ArticleVersionsRequest) =
        findVersionsByVersionId(request.page, request.limit, request.article.versionId)

    fun Route.findArticleVersions(repo: ArticleRepository, voter: ArticleVoter) {
        get<ArticleVersionsRequest> {
            repo.findVersions(it)
                .apply { voter.assert { canView(it.article, citizenOrNull) } }
                .let { call.respond(it) }
        }
    }
}