local callbacks = {}
local camera_coord = nil
local camera_target = nil
local camera_created = false
local camera_destroyed = false
local scripted_camera_rendering = false

local vector_meta = {}
vector_meta.__index = vector_meta

function vector_meta.__add(left, right)
    return vector3(left.x + right.x, left.y + right.y, left.z + right.z)
end

function vector_meta.__sub(left, right)
    return vector3(left.x - right.x, left.y - right.y, left.z - right.z)
end

function vector_meta.__mul(left, right)
    if type(left) == "number" then
        left, right = right, left
    end
    return vector3(left.x * right, left.y * right, left.z * right)
end

function vector3(x, y, z)
    return setmetatable({ x = x, y = y, z = z }, vector_meta)
end

function RegisterNUICallback(name, callback)
    callbacks[name] = callback
end

function RegisterNetEvent() end
function AddEventHandler() end
function TriggerEvent() end
function TriggerServerEvent() end
function SendNUIMessage() end
function CreateThread() end
function Wait() end
function PlayerPedId() return 7 end
function PlayerId() return 8 end
function GetFollowPedCamViewMode() return 1 end
function GetFollowVehicleCamViewMode() return 2 end
function IsRadarHidden() return false end
function DisplayRadar() end
function SetFollowPedCamViewMode() end
function SetFollowVehicleCamViewMode() end
function IsPedInAnyVehicle() return false end
function DisableControlAction() end
function DisablePlayerFiring() end
function HideHudAndRadarThisFrame() end
function GetCurrentResourceName() return "sky_phone" end

function GetEntityCoords()
    return vector3(10.0, 20.0, 1.0)
end

function GetPedBoneCoords()
    return vector3(10.0, 20.0, 2.7)
end

function GetEntityForwardVector()
    return vector3(0.0, 1.0, 0.0)
end

function CreateCam(name, active)
    assert(name == "DEFAULT_SCRIPTED_CAMERA" and active, "selfie camera must be created active")
    camera_created = true
    camera_destroyed = false
    return 73
end

function DoesCamExist(handle)
    return camera_created and not camera_destroyed and handle == 73
end

function SetCamFov() end
function SetCamActive() end

function RenderScriptCams(active)
    scripted_camera_rendering = active
end

function SetCamCoord(_, x, y, z)
    camera_coord = vector3(x, y, z)
end

function PointCamAtCoord(_, x, y, z)
    camera_target = vector3(x, y, z)
end

function DestroyCam(handle)
    assert(handle == 73, "the selfie camera handle must be destroyed")
    camera_destroyed = true
end

local function response_from(name, data)
    local response = nil
    callbacks[name](data, function(value)
        response = value
    end)
    return response
end

local function close_enough(actual, expected)
    return math.abs(actual - expected) < 0.0001
end

dofile("sky_phone/source/client/camera.lua")

assert(response_from("camera:setActive", { active = true }).success)
assert(response_from("camera:setFacing", { front = true }).success)
assert(camera_created and scripted_camera_rendering, "selfie mode must render a scripted camera")
assert(camera_coord and camera_target, "selfie mode must position and aim the camera")
assert(close_enough(camera_coord.x, 10.0))
assert(close_enough(camera_coord.y, 21.05))
assert(close_enough(camera_coord.z, 2.75))
assert(close_enough(camera_target.x, 10.0))
assert(close_enough(camera_target.y, 20.0))
assert(close_enough(camera_target.z, 2.73))

assert(response_from("camera:setFacing", { front = false }).success)
assert(camera_destroyed and not scripted_camera_rendering, "rear mode must release the selfie camera")

assert(type(SkyPhoneCamera.EnableWalkable) == "function", "walkable camera enable seam must exist")
assert(type(SkyPhoneCamera.DisableWalkable) == "function", "walkable camera disable seam must exist")
assert(type(SkyPhoneCamera.SetSelfie) == "function", "selfie camera seam must exist")
assert(type(SkyPhoneCamera.ToggleFrozen) == "function", "frozen camera seam must exist")
assert(type(SkyPhoneCamera.SetFlashlight) == "function", "flashlight seam must exist")
assert(type(SkyPhoneCamera.GetState) == "function", "camera state seam must exist")

SkyPhoneCamera.SetFlashlight(true)
assert(SkyPhoneCamera.GetState().flashEnabled, "flashlight state must report enabled")
SkyPhoneCamera.SetFlashlight(false)
assert(not SkyPhoneCamera.GetState().flashEnabled, "flashlight state must report disabled")

SkyPhoneCamera.EnableWalkable(true)
local walkable_state = SkyPhoneCamera.GetState()
assert(walkable_state.walkable, "walkable camera must report enabled")
assert(walkable_state.selfie, "walkable camera must preserve selfie mode")
assert(walkable_state.active, "walkable camera must open the camera")
SkyPhoneCamera.SetSelfie(false)
assert(not SkyPhoneCamera.GetState().selfie, "selfie camera must switch back to rear mode")
SkyPhoneCamera.ToggleFrozen()
SkyPhoneCamera.DisableWalkable()
local closed_state = SkyPhoneCamera.GetState()
assert(not closed_state.walkable, "walkable camera must report disabled")
assert(not closed_state.active, "walkable camera disable must close the camera")

print("Client camera tests passed")