package handlers

import (
	"context"
	"net/http"

	"git.haelnorr.com/h/golib/hws"
	"git.haelnorr.com/h/oslstats/internal/db"
	"git.haelnorr.com/h/oslstats/internal/respond"
	"git.haelnorr.com/h/oslstats/internal/throw"
	"git.haelnorr.com/h/oslstats/internal/view/seasonsview"
	"github.com/pkg/errors"
	"github.com/uptrace/bun"
)

// SeasonLeagueFixturesPage renders the fixtures tab of a season league page
func SeasonLeagueFixturesPage(
	s *hws.Server,
	conn *db.DB,
) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		seasonShortName := r.PathValue("season_short_name")
		leagueShortName := r.PathValue("league_short_name")

		var season *db.Season
		var league *db.League
		var fixtures []*db.Fixture

		if ok := conn.WithReadTx(s, w, r, func(ctx context.Context, tx bun.Tx) (bool, error) {
			var err error
			season, league, fixtures, err = db.GetFixtures(ctx, tx, seasonShortName, leagueShortName)
			if err != nil {
				if db.IsBadRequest(err) {
					throw.NotFound(s, w, r, r.URL.Path)
					return false, nil
				}
				return false, errors.Wrap(err, "db.GetFixtures")
			}
			return true, nil
		}); !ok {
			return
		}

		if r.Method == "GET" {
			renderSafely(seasonsview.SeasonLeagueFixturesPage(season, league, fixtures), s, r, w)
		} else {
			renderSafely(seasonsview.SeasonLeagueFixtures(season, league, fixtures), s, r, w)
		}
	})
}

func SeasonLeagueManageFixturesPage(
	s *hws.Server,
	conn *db.DB,
) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		seasonShortName := r.PathValue("season_short_name")
		leagueShortName := r.PathValue("league_short_name")

		var season *db.Season
		var league *db.League
		var fixtures []*db.Fixture

		if ok := conn.WithReadTx(s, w, r, func(ctx context.Context, tx bun.Tx) (bool, error) {
			var err error
			season, league, fixtures, err = db.GetFixtures(ctx, tx, seasonShortName, leagueShortName)
			if err != nil {
				if db.IsBadRequest(err) {
					throw.NotFound(s, w, r, r.URL.Path)
					return false, nil
				}
				return false, errors.Wrap(err, "db.GetFixtures")
			}
			return true, nil
		}); !ok {
			return
		}

		renderSafely(seasonsview.SeasonLeagueManageFixturesPage(season, league, fixtures), s, r, w)
	})
}

func SeasonLeagueDeleteFixtures(
	s *hws.Server,
	conn *db.DB,
) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		seasonShortName := r.PathValue("season_short_name")
		leagueShortName := r.PathValue("league_short_name")

		var season *db.Season
		var league *db.League
		var fixtures []*db.Fixture
		if !conn.WithNotifyTx(s, w, r, func(ctx context.Context, tx bun.Tx) (bool, error) {
			err := db.DeleteAllFixtures(ctx, tx, seasonShortName, leagueShortName, db.NewAuditFromRequest(r))
			if err != nil {
				if db.IsBadRequest(err) {
					respond.BadRequest(w, errors.Wrap(err, "db.DeleteAllFixtures"))
					return false, nil
				}
				return false, errors.Wrap(err, "db.DeleteAllFixtures")
			}
			season, league, fixtures, err = db.GetFixtures(ctx, tx, seasonShortName, leagueShortName)
			if err != nil {
				return false, errors.Wrap(err, "db.GetFixtures")
			}
			return true, nil
		}) {
			return
		}

		renderSafely(seasonsview.SeasonLeagueManageFixtures(season, league, fixtures), s, r, w)
	})
}