Add filtering and pagination for bookings

pkg/booking/admin.go

@@ -9,6 +9,7 @@ import (
 	"context"
 	"dev.tandem.ws/tandem/camper/pkg/ods"
 	"errors"
+	"fmt"
 	"net/http"
 	"strconv"
 	"strings"
@@ -137,17 +138,27 @@ func (h *AdminHandler) bookingHandler(user *auth.User, company *auth.Company, co
 }
 
 func serveBookingIndex(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, conn *database.Conn) {
-	bookings, err := collectBookingEntries(r.Context(), conn, user.Locale.Language)
+	filters := newFilterForm(r.Context(), conn, company, user.Locale)
+	if err := filters.Parse(r); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	bookings, err := collectBookingEntries(r.Context(), conn, user.Locale.Language, filters)
 	if err != nil {
 		panic(err)
 	}
-	page := bookingIndex(bookings)
+	page := &bookingIndex{
+		Bookings: filters.buildCursor(bookings),
+		Filters:  filters,
+	}
 	page.MustRender(w, r, user, company)
 }
 
-func collectBookingEntries(ctx context.Context, conn *database.Conn, lang language.Tag) ([]*bookingEntry, error) {
-	rows, err := conn.Query(ctx, `
-		select left(slug::text, 10)
+func collectBookingEntries(ctx context.Context, conn *database.Conn, lang language.Tag, filters *filterForm) ([]*bookingEntry, error) {
+	where, args := filters.BuildQuery([]interface{}{lang.String()})
+	rows, err := conn.Query(ctx, fmt.Sprintf(`
+		select booking_id
+		     , left(slug::text, 10)
 		     , '/admin/bookings/' || slug
 		     , lower(stay)
 		     , upper(stay)
@@ -157,8 +168,11 @@ func collectBookingEntries(ctx context.Context, conn *database.Conn, lang langua
 		from booking
 		    join booking_status as status using (booking_status)
 			left join booking_status_i18n as i18n on status.booking_status = i18n.booking_status and i18n.lang_tag = $1
-		order by stay desc
-	`, lang)
+		where (%s)
+		order by lower(stay) desc
+		       , booking_id desc
+		LIMIT %d
+	`, where, filters.perPage+1), args...)
 	if err != nil {
 		return nil, err
 	}
@@ -167,7 +181,7 @@ func collectBookingEntries(ctx context.Context, conn *database.Conn, lang langua
 	var entries []*bookingEntry
 	for rows.Next() {
 		entry := &bookingEntry{}
-		if err = rows.Scan(&entry.Reference, &entry.URL, &entry.ArrivalDate, &entry.DepartureDate, &entry.HolderName, &entry.Status, &entry.StatusLabel); err != nil {
+		if err = rows.Scan(&entry.ID, &entry.Reference, &entry.URL, &entry.ArrivalDate, &entry.DepartureDate, &entry.HolderName, &entry.Status, &entry.StatusLabel); err != nil {
 			return nil, err
 		}
 		entries = append(entries, entry)
@@ -177,6 +191,7 @@ func collectBookingEntries(ctx context.Context, conn *database.Conn, lang langua
 }
 
 type bookingEntry struct {
+	ID            int
 	Reference     string
 	URL           string
 	ArrivalDate   time.Time
@@ -186,7 +201,10 @@ type bookingEntry struct {
 	StatusLabel   string
 }
 
-type bookingIndex []*bookingEntry
+type bookingIndex struct {
+	Bookings []*bookingEntry
+	Filters  *filterForm
+}
 
 func (page bookingIndex) MustRender(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company) {
 	switch r.URL.Query().Get("format") {
@@ -198,7 +216,7 @@ func (page bookingIndex) MustRender(w http.ResponseWriter, r *http.Request, user
 			"Holder Name",
 			"Status",
 		}
-		table, err := ods.WriteTable(page, columns, user.Locale, func(sb *strings.Builder, entry *bookingEntry) error {
+		table, err := ods.WriteTable(page.Bookings, columns, user.Locale, func(sb *strings.Builder, entry *bookingEntry) error {
 			if err := ods.WriteCellString(sb, entry.Reference); err != nil {
 				return err
 			}
@@ -217,9 +235,126 @@ func (page bookingIndex) MustRender(w http.ResponseWriter, r *http.Request, user
 		}
 		ods.MustWriteResponse(w, table, user.Locale.Pgettext("bookings.ods", "filename"))
 	default:
-		template.MustRenderAdmin(w, r, user, company, "booking/index.gohtml", page)
+		if httplib.IsHTMxRequest(r) && page.Filters.pagination {
+			template.MustRenderAdminNoLayout(w, r, user, company, "booking/results.gohtml", page)
+		} else {
+			template.MustRenderAdminFiles(w, r, user, company, page, "booking/index.gohtml", "booking/results.gohtml")
 		}
 	}
+}
+
+type filterForm struct {
+	locale        *locale.Locale
+	company       *auth.Company
+	perPage       int
+	pagination    bool
+	HolderName    *form.Input
+	BookingStatus *form.Select
+	FromDate      *form.Input
+	ToDate        *form.Input
+	Cursor        *form.Input
+}
+
+func newFilterForm(ctx context.Context, conn *database.Conn, company *auth.Company, locale *locale.Locale) *filterForm {
+	return &filterForm{
+		locale:  locale,
+		company: company,
+		perPage: 25,
+		HolderName: &form.Input{
+			Name: "holder_name",
+		},
+		BookingStatus: &form.Select{
+			Name:    "booking_status",
+			Options: mustGetBookingStatusOptions(ctx, conn, locale),
+		},
+		FromDate: &form.Input{
+			Name: "from_date",
+		},
+		ToDate: &form.Input{
+			Name: "to_date",
+		},
+		Cursor: &form.Input{
+			Name: "cursor",
+		},
+	}
+}
+
+func mustGetBookingStatusOptions(ctx context.Context, conn *database.Conn, locale *locale.Locale) []*form.Option {
+	return form.MustGetOptions(ctx, conn, `
+		select booking_status.booking_status
+		     , isi18n.name 
+		from booking_status
+		    join booking_status_i18n isi18n using(booking_status)
+		where isi18n.lang_tag = $1
+		order by booking_status`, locale.Language)
+}
+
+func (f *filterForm) Parse(r *http.Request) error {
+	if err := r.ParseForm(); err != nil {
+		return err
+	}
+	f.HolderName.FillValue(r)
+	f.BookingStatus.FillValue(r)
+	f.FromDate.FillValue(r)
+	f.ToDate.FillValue(r)
+	f.Cursor.FillValue(r)
+	f.pagination = f.Cursor.Val != ""
+	return nil
+}
+
+func (f *filterForm) BuildQuery(args []interface{}) (string, []interface{}) {
+	var where []string
+	appendWhere := func(expression string, value interface{}) {
+		args = append(args, value)
+		where = append(where, fmt.Sprintf(expression, len(args)))
+	}
+	maybeAppendWhere := func(expression string, value string, conv func(string) interface{}) {
+		if value != "" {
+			if conv == nil {
+				appendWhere(expression, value)
+			} else {
+				appendWhere(expression, conv(value))
+			}
+		}
+	}
+
+	appendWhere("booking.company_id = $%d", f.company.ID)
+	maybeAppendWhere("booking.holder_name ILIKE $%d", f.HolderName.Val, func(v string) interface{} {
+		return "%" + v + "%"
+	})
+	maybeAppendWhere("booking.booking_status = $%d", f.BookingStatus.String(), nil)
+	maybeAppendWhere("lower(stay) >= $%d", f.FromDate.Val, nil)
+	maybeAppendWhere("lower(stay) <= $%d", f.ToDate.Val, nil)
+
+	if f.Cursor.Val != "" {
+		params := strings.Split(f.Cursor.Val, ";")
+		if len(params) == 2 {
+			where = append(where, fmt.Sprintf("(lower(stay), booking_id) < ($%d, $%d)", len(args)+1, len(args)+2))
+			args = append(args, params[0])
+			args = append(args, params[1])
+		}
+	}
+
+	return strings.Join(where, ") AND ("), args
+}
+
+func (f *filterForm) buildCursor(bookings []*bookingEntry) []*bookingEntry {
+	if len(bookings) <= f.perPage {
+		f.Cursor.Val = ""
+		return bookings
+	}
+	bookings = bookings[:f.perPage]
+	last := bookings[f.perPage-1]
+	f.Cursor.Val = fmt.Sprintf("%s;%d", last.ArrivalDate.Format(database.ISODateFormat), last.ID)
+	return bookings
+}
+
+func (f *filterForm) HasValue() bool {
+	return f.HolderName.Val != "" ||
+		(len(f.BookingStatus.Selected) > 0 && f.BookingStatus.Selected[0] != "") ||
+		f.FromDate.Val != "" ||
+		f.ToDate.Val != ""
+}
 
 type adminBookingForm struct {
 	*bookingForm

web/templates/admin/booking/index.gohtml

@@ -13,8 +13,60 @@
     {{- /*gotype: dev.tandem.ws/tandem/camper/pkg/booking.bookingIndex*/ -}}
     <a href="/admin/bookings/new">{{( pgettext "Add Booking" "action" )}}</a>
     <a href="/admin/bookings?format=ods">{{( pgettext "Export Bookings" "action" )}}</a>
+    {{ template "filters-toggle" }}
+    <form class="filters" method="GET" action="/admin/bookings"
+          data-hx-target="main" data-hx-boost="true" data-hx-trigger="change,search,submit"
+          aria-labelledby="filters-toggle"
+    >
+        {{ with .Filters }}
+            <fieldset>
+                {{ with .HolderName -}}
+                    <label>
+                        {{( pgettext "Holder name" "input" )}}<br>
+                        <input type="text"
+                               name="{{ .Name }}" value="{{ .Val }}" {{ template "error-attrs" . }}
+                        ><br>
+                        {{ template "error-message" . }}
+                    </label>
+                {{- end }}
+                {{ with .BookingStatus -}}
+                    <label>
+                        {{( pgettext "Booking status" "input" )}}<br>
+                        <select name="{{ .Name }}"
+                                {{ template "error-attrs" . }}
+                        >
+                            <option value="">{{( gettext "All statuses" )}}</option>
+                            {{ template "list-options" . }}
+                        </select><br>
+                        {{ template "error-message" . }}
+                    </label>
+                {{- end }}
+                {{ with .FromDate -}}
+                    <label>
+                        {{( pgettext "From date" "input" )}}<br>
+                        <input type="date"
+                               name="{{ .Name }}" value="{{ .Val }}" {{ template "error-attrs" . }}
+                        ><br>
+                        {{ template "error-message" . }}
+                    </label>
+                {{- end }}
+                {{ with .ToDate -}}
+                    <label>
+                        {{( pgettext "To date" "input" )}}<br>
+                        <input type="date"
+                               name="{{ .Name }}" value="{{ .Val }}" {{ template "error-attrs" . }}
+                        ><br>
+                        {{ template "error-message" . }}
+                    </label>
+                {{- end }}
+            </fieldset>
+        {{ end }}
+        {{ if .Filters.HasValue }}
+            <a href="/admin/bookings" class="button">{{( pgettext "Reset" "action" )}}</a>
+        {{ end }}
+    </form>
     <h2>{{( pgettext "Bookings" "title" )}}</h2>
-    {{ if . -}}
+    {{ if .Bookings -}}
         <table>
             <thead>
             <tr>
@@ -26,15 +78,7 @@
             </tr>
             </thead>
             <tbody>
-            {{ range . -}}
-                <tr class="booking-{{ .Status }}">
-                    <td><a href="{{ .URL }}">{{ .Reference }}</a></td>
-                    <td>{{ .ArrivalDate | formatDate }}</td>
-                    <td>{{ .DepartureDate | formatDate }}</td>
-                    <td>{{ .HolderName }}</td>
-                    <td class="booking-status">{{ .StatusLabel }}</td>
-                </tr>
-            {{- end }}
+                {{ template "results.gohtml" . }}
             </tbody>
         </table>
     {{ else -}}

web/templates/admin/booking/results.gohtml

@@ -0,0 +1,28 @@
+{{ range .Bookings -}}
+    <tr class="booking-{{ .Status }}">
+        <td><a href="{{ .URL }}">{{ .Reference }}</a></td>
+        <td>{{ .ArrivalDate | formatDate }}</td>
+        <td>{{ .DepartureDate | formatDate }}</td>
+        <td>{{ .HolderName }}</td>
+        <td class="booking-status">{{ .StatusLabel }}</td>
+    </tr>
+{{- end }}
+{{ if .Filters.Cursor.Val }}
+    <tr>
+        <td colspan="5">
+            {{ with .Filters -}}
+                <form data-hx-get="/admin/bookings" data-hx-target="closest tr" data-hx-swap="outerHTML">
+                    {{ with .HolderName -}}<input type="hidden" name="{{ .Name }}"
+                                                  value="{{ .Val }}">{{- end }}
+                    {{ with .BookingStatus -}}<input type="hidden" name="{{ .Name }}"
+                                                     value="{{ .String }}">{{- end }}
+                    {{ with .FromDate -}}<input type="hidden" name="{{ .Name }}"
+                                                value="{{ .Val }}">{{- end }}
+                    {{ with .ToDate -}}<input type="hidden" name="{{ .Name }}" value="{{ .Val }}">{{- end }}
+                    {{ with .Cursor -}}<input type="hidden" name="{{ .Name }}" value="{{ .Val }}">{{- end }}
+                    <button type="submit">{{( pgettext "Load more" "action" )}}</button>
+                </form>
+            {{- end }}
+        <td>
+    </tr>
+{{- end }}