// Package onvif defines the ONVIF boundary used by Sense.
package onvif

import (
	"context"
	"errors"
	"fmt"
	"time"
)

type Target struct {
	// EndpointRef identifies a device endpoint but must not contain credentials.
	EndpointRef string
	// CredentialRef is an opaque secret-store reference, never a password.
	CredentialRef string
}

type Profile struct {
	Token        string `json:"token"`
	Name         string `json:"name"`
	VideoEncoder bool   `json:"video_encoder"`
}

type ProbeResult struct {
	Manufacturer    string    `json:"manufacturer"`
	Model           string    `json:"model"`
	FirmwareVersion string    `json:"firmware_version"`
	SerialNumber    string    `json:"serial_number"`
	Profiles        []Profile `json:"profiles"`
	StreamURI       string    `json:"stream_uri"`
}

type Adapter interface {
	Probe(ctx context.Context, target Target) (ProbeResult, error)
	SetSystemDateAndTime(ctx context.Context, target Target, value time.Time) error
}

type ErrorCode string

const (
	ErrorAuthentication ErrorCode = "authentication_failed"
	ErrorTimeout        ErrorCode = "timeout"
	ErrorUnavailable    ErrorCode = "unavailable"
	ErrorInvalidReply   ErrorCode = "invalid_response"
)

type Error struct {
	Code ErrorCode
	Err  error
}

func (e *Error) Error() string {
	if e.Err == nil {
		return string(e.Code)
	}
	return fmt.Sprintf("%s: %v", e.Code, e.Err)
}

func (e *Error) Unwrap() error { return e.Err }

func CodeOf(err error) ErrorCode {
	var onvifError *Error
	if errors.As(err, &onvifError) {
		return onvifError.Code
	}
	if errors.Is(err, context.DeadlineExceeded) {
		return ErrorTimeout
	}
	return ErrorUnavailable
}