package main

import (
	"encoding/json"
	"io"
	"log"
	"os"
	"strings"

	"github.com/gin-gonic/gin"
)

// initCommandAllowList func
func initCommandAllowList() {

	// generate map of all available commands
	CommandList := make(map[string][]string)

	// https://github.com/teslamate-org/teslamate/discussions/1433
	CommandList["COMMANDS_LOGGING"] = []string{
		"/logging/resume",
		"/logging/suspend",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/wake
	CommandList["COMMANDS_WAKE"] = []string{
		"/wake_up",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/alerts
	CommandList["COMMANDS_ALERT"] = []string{
		"/command/honk_horn",
		"/command/flash_lights",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/remotestart
	CommandList["COMMANDS_REMOTESTART"] = []string{
		"/command/remote_start_drive",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/homelink
	CommandList["COMMANDS_HOMELINK"] = []string{
		"/command/trigger_homelink",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/speedlimit
	CommandList["COMMANDS_SPEEDLIMIT"] = []string{
		"/command/speed_limit_set_limit",
		"/command/speed_limit_activate",
		"/command/speed_limit_deactivate",
		"/command/speed_limit_clear_pin",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/valet
	CommandList["COMMANDS_VALET"] = []string{
		"/command/set_valet_mode",
		"/command/reset_valet_pin",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/sentrymode
	CommandList["COMMANDS_SENTRYMODE"] = []string{
		"/command/set_sentry_mode",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/doors
	CommandList["COMMANDS_DOORS"] = []string{
		"/command/door_unlock",
		"/command/door_lock",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/trunk
	CommandList["COMMANDS_TRUNK"] = []string{
		"/command/actuate_trunk",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/windows
	CommandList["COMMANDS_WINDOWS"] = []string{
		"/command/window_control",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/sunroof
	CommandList["COMMANDS_SUNROOF"] = []string{
		"/command/sun_roof_control",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/charging
	CommandList["COMMANDS_CHARGING"] = []string{
		"/command/charge_port_door_open",
		"/command/charge_port_door_close",
		"/command/charge_start",
		"/command/charge_stop",
		"/command/charge_standard",
		"/command/charge_max_range",
		"/command/set_charge_limit",
		"/command/set_charging_amps",
		"/command/set_scheduled_charging",
		"/command/set_scheduled_departure",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/climate
	CommandList["COMMANDS_CLIMATE"] = []string{
		"/command/auto_conditioning_start",
		"/command/auto_conditioning_stop",
		"/command/set_temps",
		"/command/set_preconditioning_max",
		"/command/remote_seat_heater_request",
		"/command/remote_seat_cooler_request",
		"/command/remote_steering_wheel_heater_request",
		"/command/set_bioweapon_mode",
		"/command/set_climate_keeper_mode",
		"/command/remote_auto_seat_climate_request",
		"/command/set_cop_temp",
		"/command/set_cabin_overheat_protection",
		"/command/remote_auto_steering_wheel_heat_climate_request", // missing documentation
		"/command/remote_steering_wheel_heat_level_request",        // missing documentation
	}

	// https://tesla-api.timdorr.com/vehicle/commands/media
	CommandList["COMMANDS_MEDIA"] = []string{
		"/command/media_toggle_playback",
		"/command/media_next_track",
		"/command/media_prev_track",
		"/command/media_next_fav",
		"/command/media_prev_fav",
		"/command/media_volume_up",
		"/command/media_volume_down",
		"/command/adjust_volume",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/sharing
	CommandList["COMMANDS_SHARING"] = []string{
		"/command/share",
	}

	// https://tesla-api.timdorr.com/vehicle/commands/softwareupdate
	CommandList["COMMANDS_SOFTWAREUPDATE"] = []string{
		"/command/schedule_software_update",
		"/command/cancel_software_update",
	}

	// not documentet and unsorted new endpoints
	CommandList["COMMANDS_UNKNOWN"] = []string{
		"/command/upcoming_calendar_entries",
		"/command/dashcam_save_clip",
		"/command/navigation_sc_request",
		"/command/remote_boombox",
		"/command/get_active_route",
		"/command/get_managed_charging_sites",
		"/command/add_managed_charging_site",
		"/command/remove_managed_charging_site",
		"/command/update_charge_on_solar_feature",
		"/command/get_charge_on_solar_feature",
		"/command/take_drivenote",
		"/command/navigation_gps_request",
	}

	// allow all commands available below
	allowAll := getEnvAsBool("COMMANDS_ALL", false)

	// looping over CommandList to generate allowList
	for key := range CommandList {
		// checking if env is set from key or if all should be allowed
		if getEnvAsBool(key, false) || allowAll {
			// appending to allowList
			allowList = append(allowList, CommandList[key]...)
		}
	}

	// if allowList is empty, read COMMANDS_ALLOWLIST and append to allowList
	commandAllowListLocation := getEnv("COMMANDS_ALLOWLIST", "allow_list.json")
	if len(allowList) == 0 {
		var allowListFile []string
		commandAllowListFile, err := os.Open(commandAllowListLocation)
		if err != nil {
			log.Println("[error] getAllowList error with COMMANDS_ALLOWLIST: " + commandAllowListLocation + " not found and will be ignored")
			return
		}

		defer commandAllowListFile.Close()
		byteValue, err := io.ReadAll(commandAllowListFile)
		if err != nil {
			log.Println("[error] getAllowList error while reading COMMANDS_ALLOWLIST: " + commandAllowListLocation + " it will be ignored")
			return
		}

		err = json.Unmarshal(byteValue, &allowListFile)
		if err != nil {
			log.Println("[error] getAllowList error while parsing JSON.. COMMANDS_ALLOWLIST: " + commandAllowListLocation + " it will be ignored")
			return
		}

		allowList = append(allowList, allowListFile...)
	} else {
		log.Print("[info] getAllowList COMMANDS from environment variables set, " + commandAllowListLocation + " will be ignored.")
	}

	if gin.IsDebugging() {
		log.Println("[info] initCommandAllowList - generated following list of allowed commands: " + strings.Join(allowList, ", "))
	}
}