package main

import (
	"fmt"

	"github.com/go-ble/ble"
)

func explore(cln ble.Client, p *ble.Profile) error {
	for _, s := range p.Services {
		fmt.Printf("    Service: %s %s, Handle (0x%02X)\n", s.UUID, ble.Name(s.UUID), s.Handle)

		for _, c := range s.Characteristics {
			fmt.Printf("      Characteristic: %s %s, Property: 0x%02X (%s), Handle(0x%02X), VHandle(0x%02X)\n",
				c.UUID, ble.Name(c.UUID), c.Property, propString(c.Property), c.Handle, c.ValueHandle)
			if (c.Property & ble.CharRead) != 0 {
				b, err := cln.ReadCharacteristic(c)
				if err != nil {
					fmt.Printf("Failed to read characteristic: %s\n", err)
					continue
				}
				fmt.Printf("        Value         %x | %q\n", b, b)
			}

			for _, d := range c.Descriptors {
				fmt.Printf("        Descriptor: %s %s, Handle(0x%02x)\n", d.UUID, ble.Name(d.UUID), d.Handle)
				b, err := cln.ReadDescriptor(d)
				if err != nil {
					fmt.Printf("Failed to read descriptor: %s\n", err)
					continue
				}
				fmt.Printf("        Value         %x | %q\n", b, b)
			}
		}
		fmt.Printf("\n")
	}
	return nil
}

func propString(p ble.Property) string {
	var s string
	for k, v := range map[ble.Property]string{
		ble.CharBroadcast:   "B",
		ble.CharRead:        "R",
		ble.CharWriteNR:     "w",
		ble.CharWrite:       "W",
		ble.CharNotify:      "N",
		ble.CharIndicate:    "I",
		ble.CharSignedWrite: "S",
		ble.CharExtended:    "E",
	} {
		if p&k != 0 {
			s += v
		}
	}
	return s
}