package hardware

import (
	"context"
	"fmt"
	"math/rand"
	"strings"

	"github.com/rs/zerolog/log"
)

// OS2LFinder represents how the protocol is defined
type OS2LFinder struct {
	peripherals map[string]Peripheral // The list of peripherals
}

// NewOS2LFinder creates a new OS2L finder
func NewOS2LFinder() *OS2LFinder {
	log.Trace().Str("file", "OS2LFinder").Msg("OS2L finder created")
	return &OS2LFinder{
		peripherals: make(map[string]Peripheral),
	}
}

// Initialize initializes the finder
func (f *OS2LFinder) Initialize() error {
	log.Trace().Str("file", "OS2LFinder").Msg("OS2L finder initialized")
	return nil
}

// CreatePeripheral creates a new OS2L peripheral
func (f *OS2LFinder) CreatePeripheral(ctx context.Context) (Peripheral, error) {
	// Create a random serial number for this peripheral
	randomSerialNumber := strings.ToUpper(fmt.Sprintf("%08x", rand.Intn(1<<32)))
	log.Trace().Str("file", "OS2LFinder").Str("serialNumber", randomSerialNumber).Msg("OS2L peripheral created")
	peripheral := NewOS2LPeripheral("OS2L", randomSerialNumber)
	f.peripherals[randomSerialNumber] = peripheral
	log.Info().Str("file", "OS2LFinder").Str("serialNumber", randomSerialNumber).Msg("OS2L peripheral created and registered")
	return peripheral, nil
}

// DeletePeripheral removes an OS2L peripheral
func (f *OS2LFinder) DeletePeripheral(serialNumber string) error {
	delete(f.peripherals, serialNumber)
	log.Info().Str("file", "OS2LFinder").Str("serialNumber", serialNumber).Msg("OS2L peripheral removed")
	return nil
}

// GetName returns the name of the driver
func (f *OS2LFinder) GetName() string {
	return "OS2L"
}

// GetPeripheral gets the peripheral that correspond to the specified ID
func (f *OS2LFinder) GetPeripheral(peripheralID string) (Peripheral, bool) {
	// Return the specified peripheral
	peripheral, found := f.peripherals[peripheralID]
	if !found {
		log.Error().Str("file", "OS2LFinder").Str("peripheralID", peripheralID).Msg("unable to get this peripheral in the OS2L finder")
		return nil, false
	}
	log.Trace().Str("file", "OS2LFinder").Str("peripheralID", peripheralID).Msg("OS2L peripheral found in the finder")
	return peripheral, true
}

// Start starts the finder
func (f *OS2LFinder) Start(ctx context.Context) error {
	return nil
}

// Stop stops this finder
func (f *OS2LFinder) Stop() error {
	return nil
}

// ForceScan scans the interfaces (not implemented)
func (f *OS2LFinder) ForceScan() {
}