Wire plan_ready, list_ready, new_suggestions and Send to Google Chat (Feature 19) (#167)

Co-authored-by: orchestrator-agent <20+orchestrator-agent@code.cubecraftcreations.com>

internal/chat/messages.go

@@ -3,6 +3,7 @@ package chat
 import (
 	"fmt"
 	"strings"
+	"time"
 
 	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/household"
 	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/notify"
@@ -34,13 +35,16 @@ var actions = map[notify.EventType]string{
 // button.
 var carded = map[notify.EventType]bool{notify.PlanReady: true, notify.ListReady: true}
 
-// PlanReady is the plan_ready event of the week starting on week, naming
-// its dinners in plan order.
-func PlanReady(week store.LocalDate, dinners []string) notify.Event {
+// PlanReady is the plan_ready event of the week starting on week, drafted
+// in the week starting on thisWeek, naming its dinners in plan order. Its
+// title names the week as seen from thisWeek: "Next week's plan is ready",
+// "This week's plan is ready", or "The plan for the week of Oct 26 is
+// ready" for any other week.
+func PlanReady(week, thisWeek store.LocalDate, dinners []string) notify.Event {
 	return notify.Event{
 		Type:  notify.PlanReady,
 		Key:   string(notify.PlanReady) + ":" + week.String(),
-		Title: "This week's plan is ready",
+		Title: planTitle(week, thisWeek),
 		Body:  nameList(dinners),
 		URL:   "/plan",
 		Week:  week,
@@ -100,6 +104,72 @@ func RotationReview(dinnerID, name string, week store.LocalDate) notify.Event {
 	}
 }
 
+// SupplyRunItem is a Supply run item still needed, as sent to Google Chat;
+// Qty is empty when the recipe gives none.
+type SupplyRunItem struct {
+	Name string
+	Qty  string
+}
+
+// SupplyRunGroup is one dinner of a Supply run sent to Google Chat, with
+// its items still needed.
+type SupplyRunGroup struct {
+	Dinner string
+	Items  []SupplyRunItem
+}
+
+// SupplyRunText is the Google Chat message of the Supply run named name
+// (its title, or its week label until it has one): each dinner with items
+// still needed in bold, its items one per line, and the call to action.
+//
+//	Supply run · Week 42 · Oct 12 – 18
+//
+//	*Tacos*
+//	• ground beef — 1 lb
+//	• tortillas
+//
+//	Open the Supply run →
+//
+// A Supply run with nothing still needed says so.
+func SupplyRunText(name string, groups []SupplyRunGroup) string {
+	var b strings.Builder
+	b.WriteString("Supply run · " + name)
+	listed := false
+	for _, g := range groups {
+		if len(g.Items) == 0 {
+			continue
+		}
+		listed = true
+		b.WriteString("\n\n*" + g.Dinner + "*")
+		for _, it := range g.Items {
+			b.WriteString("\n• " + it.Name)
+			if it.Qty != "" {
+				b.WriteString(" — " + it.Qty)
+			}
+		}
+	}
+	if !listed {
+		b.WriteString("\n\nNothing left to buy.")
+	}
+	b.WriteString("\n\n" + actions[notify.ListReady] + " →")
+	return b.String()
+}
+
+// planTitle is the plan_ready title of the week starting on week, seen
+// from the week starting on thisWeek.
+func planTitle(week, thisWeek store.LocalDate) string {
+	y, m, d := thisWeek.Date()
+	next := store.LocalDateOf(time.Date(y, m, d+7, 0, 0, 0, 0, time.UTC))
+	switch week {
+	case thisWeek:
+		return "This week's plan is ready"
+	case next:
+		return "Next week's plan is ready"
+	}
+	_, m, d = week.Date()
+	return fmt.Sprintf("The plan for the week of %s %d is ready", m.String()[:3], d)
+}
+
 // Text is the Google Chat message of p: its title, its body after a colon
 // and the event's call to action with an arrow.
 func Text(p notify.Payload) string {