package handlers

import (
	"context"
	"net/http"
	"time"

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

func SeasonsPage(
	s *hws.Server,
	conn *bun.DB,
) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		ctx, cancel := context.WithTimeout(r.Context(), 15*time.Second)
		defer cancel()
		tx, err := conn.BeginTx(ctx, nil)
		if err != nil {
			throwInternalServiceError(s, w, r, "Database error", errors.Wrap(err, "conn.BeginTx"))
			return
		}
		defer tx.Rollback()
		pageOpts, err := pageOptsFromQuery(r)
		if err != nil {
			throwBadRequest(s, w, r, "invalid query", err)
			return
		}
		seasons, err := db.ListSeasons(ctx, tx, pageOpts)
		if err != nil {
			throwInternalServiceError(s, w, r, "Database error", errors.Wrap(err, "db.ListSeasons"))
			return
		}
		tx.Commit()
		renderSafely(page.SeasonsPage(seasons), s, r, w)
	})
}

func SeasonsList(
	s *hws.Server,
	conn *bun.DB,
) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		ctx, cancel := context.WithTimeout(r.Context(), 15*time.Second)
		defer cancel()

		// Parse form values
		if err := r.ParseForm(); err != nil {
			throwBadRequest(s, w, r, "Invalid form data", err)
			return
		}

		pageOpts, err := pageOptsFromForm(r)
		if err != nil {
			throwBadRequest(s, w, r, "invalid form data", err)
			return
		}

		// Database query
		tx, err := conn.BeginTx(ctx, nil)
		if err != nil {
			throwInternalServiceError(s, w, r, "Database error", errors.Wrap(err, "conn.BeginTx"))
			return
		}
		defer tx.Rollback()

		seasons, err := db.ListSeasons(ctx, tx, pageOpts)
		if err != nil {
			throwInternalServiceError(s, w, r, "Database error", errors.Wrap(err, "db.ListSeasons"))
			return
		}
		tx.Commit()

		// Return only the list component (hx-push-url handles URL update client-side)
		renderSafely(page.SeasonsList(seasons), s, r, w)
	})
}