package main

import (
	v "bitbucket.org/hackerbots/vector"
)

type Robot struct {
	Id            string     `json:"id"`
	Name          string     `json:"name"`
	Stats         Stats      `json:"-"`
	TargetSpeed   float32    `json:"-"`
	Speed         float32    `json:"speed"`
	Health        int        `json:"health"`
	RepairCounter float32    `json:"repair"`
	Position      v.Point2d  `json:"position"`
	Heading       v.Vector2d `json:"heading"`
	MoveTo        *v.Point2d `json:"-"`
	FireAt        *v.Point2d `json:"-"`
	Scanners      []Scanner  `json:"scanners"`
	LastFired     int        `json:"-"`
	Collision     bool       `json:"collision"`
	Hit           bool       `json:"hit"`
}

// This is the subset of data we send to players about robots
// that are not theirs.
type OtherRobot struct {
	Id       string     `json:"id"`
	Name     string     `json:"name"`
	Position v.Point2d  `json:"position"`
	Heading  v.Vector2d `json:"heading"`
	Health   int        `json:"health"`
}

func (r Robot) GetTruncatedDetails() OtherRobot {
	return OtherRobot{
		Id:       r.Id,
		Name:     r.Name,
		Position: r.Position,
		Heading:  r.Heading,
		Health:   r.Health,
	}
}

type RobotSorter struct {
	Robots []OtherRobot
}

func (s RobotSorter) Len() int {
	return len(s.Robots)
}

func (s RobotSorter) Swap(i, j int) {
	s.Robots[i], s.Robots[j] = s.Robots[j], s.Robots[i]
}

func (s RobotSorter) Less(i, j int) bool {
	return s.Robots[i].Id < s.Robots[j].Id
}

// TODO - how do I not duplicate this code???
type AllRobotSorter struct {
	Robots []BotHealth
}

func (s AllRobotSorter) Len() int {
	return len(s.Robots)
}

func (s AllRobotSorter) Swap(i, j int) {
	s.Robots[i], s.Robots[j] = s.Robots[j], s.Robots[i]
}

func (s AllRobotSorter) Less(i, j int) bool {
	return s.Robots[i].RobotId < s.Robots[j].RobotId
}

type Stats struct {
	Hp            int     `json:"-"`
	Speed         float32 `json:"-"`
	Acceleration  float32 `json:"-"`
	WeaponRadius  int     `json:"-"`
	ScannerRadius int     `json:"-"`
	TurnSpeed     int     `json:"-"`
	FireRate      int     `json:"-"`
	WeaponDamage  int     `json:"-"`
	WeaponSpeed   float32 `json:"-"`
}

// We request stats using an integer between 1 and 100, the
// integer values map to sensible min-max ranges
type StatsRequest struct {
	Hp            int `json:"hp"`
	Speed         int `json:"speed"`
	Acceleration  int `json:"acceleration"`
	WeaponRadius  int `json:"weapon_radius"`
	ScannerRadius int `json:"scanner_radius"`
	TurnSpeed     int `json:"turn_speed"`
	FireRate      int `json:"fire_rate"`
	WeaponDamage  int `json:"weapon_damage"`
	WeaponSpeed   int `json:"weapon_speed"`
}

func DeriveStats(request StatsRequest) Stats {
	s := Stats{}

	// Conversion Tables
	var hp_min float32 = 20.0
	var hp_max float32 = 200.0
	s.Hp = int(((float32(request.Hp) / 100.0) * (hp_max - hp_min)) + hp_min)

	var speed_min float32 = 40.0
	var speed_max float32 = 200.0
	s.Speed = ((float32(request.Speed) / 100.0) * (speed_max - speed_min)) + speed_min

	var accel_min float32 = 20.0
	var accel_max float32 = 200.0
	s.Acceleration = ((float32(request.Acceleration) / 100.0) * (accel_max - accel_min)) + accel_min

	var wep_rad_min float32 = 5.0
	var wep_rad_max float32 = 60.0
	s.WeaponRadius = int(((float32(request.WeaponRadius) / 100.0) * (wep_rad_max - wep_rad_min)) + wep_rad_min)

	var scan_rad_min float32 = 100.0
	var scan_rad_max float32 = 400.0
	s.ScannerRadius = int(((float32(request.ScannerRadius) / 100.0) * (scan_rad_max - scan_rad_min)) + scan_rad_min)

	var turn_spd_min float32 = 30.0
	var turn_spd_max float32 = 300.0
	s.TurnSpeed = int(((float32(request.TurnSpeed) / 100.0) * (turn_spd_max - turn_spd_min)) + turn_spd_min)

	var fire_rate_min float32 = 10.0
	var fire_rate_max float32 = 2000.0
	s.FireRate = int(fire_rate_max+300.0) - int(((float32(request.FireRate)/100.0)*(fire_rate_max-fire_rate_min))+fire_rate_min)

	var weapon_damage_min float32 = 0.0
	var weapon_damage_max float32 = 20.0
	s.WeaponDamage = int(((float32(request.WeaponDamage) / 100.0) * (weapon_damage_max - weapon_damage_min)) + weapon_damage_min)

	var weapon_speed_min float32 = 80.0
	var weapon_speed_max float32 = 600.0
	s.WeaponSpeed = float32(((float32(request.WeaponSpeed) / 100.0) * (weapon_speed_max - weapon_speed_min)) + weapon_speed_min)

	return s
}

func (s StatsRequest) Valid() bool {
	total := (s.Speed + s.Hp + s.WeaponRadius +
		s.ScannerRadius + s.Acceleration + s.TurnSpeed + s.FireRate)

	// allowing for 50 pts in every category
	if total > 500 {
		return false
	}
	return true
}

type Instruction struct {
	MoveTo      *v.Point2d `json:"move_to,omitempty"`
	FireAt      *v.Point2d `json:"fire_at,omitempty"`
	TargetSpeed *float32   `json:"target_speed,omitempty"`
	Repair      *bool      `json:"repair,omitempty"`
	Stats       Stats      `json:"stats"`
}