// notes dumps the /msg/pms/ inbox listing and, if an argument is given,
// prints the full body of that note id. Requires FA_A / FA_B in env.
//
//	go run ./examples/notes            # list inbox
//	go run ./examples/notes 131012623  # read one note
package main

import (
	"context"
	"fmt"
	"log"
	"os"
	"strconv"

	fa "git.anthrove.art/public/go-fa-api"
)

func main() {
	a, b := os.Getenv("FA_A"), os.Getenv("FA_B")
	if a == "" || b == "" {
		log.Fatal("FA_A and FA_B must be set notes require login")
	}
	client := fa.New(
		fa.WithCookies(fa.Cookies{A: a, B: b}),
		fa.WithCloudflare(fa.CFCookies{Clearance: os.Getenv("CF_CLEARANCE")}),
		fa.WithUserAgent(envOr("FA_UA", "go-fa-api-example/0.1")),
	)
	ctx := context.Background()

	if len(os.Args) >= 2 {
		id, err := strconv.ParseInt(os.Args[1], 10, 64)
		if err != nil {
			log.Fatalf("invalid note id: %v", err)
		}
		n, err := client.GetNote(ctx, fa.NoteID(id))
		if err != nil {
			log.Fatalf("GetNote: %v", err)
		}
		fmt.Printf("Subject: %s\nFrom: %s (@%s)\nTo: %s (@%s)\nSent: %s\n\n%s\n",
			n.Subject,
			n.From.DisplayName, n.From.Name,
			n.To.DisplayName, n.To.Name,
			n.SentAt.Format("2006-01-02 15:04"),
			n.BodyText)
		return
	}

	count := 0
	for np, err := range client.Notes(ctx, fa.ListOptions{MaxPages: 1}) {
		if err != nil {
			log.Fatalf("Notes: %v", err)
		}
		count++
		unread := " "
		if np.Unread {
			unread = "*"
		}
		from := np.Sender.DisplayName
		if from == "" {
			from = np.Sender.Name
		}
		fmt.Printf("[%s] [%d] %s from %s (%s)\n",
			unread, np.ID, np.Subject, from, np.SentAt.Format("2006-01-02 15:04"))
	}
	fmt.Printf("\n%d notes on first page\n", count)
}

func envOr(key, fallback string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return fallback
}