/**
 * Copyright (c) 2026 Dominic Masters
 *
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "entityoverworldcamera.h"
#include "entity/entitymanager.h"
#include "entity/component/display/entityposition.h"
#include "entity/component/display/entitycamera.h"

void entityOverworldCameraInit(
  const entityid_t entityId,
  const componentid_t componentId
) {
  entityoverworldcamera_t *cam = entityOverworldCameraGet(entityId, componentId);
  cam->targetEntityId = ENTITY_ID_INVALID;
  cam->targetPosCompId = COMPONENT_ID_INVALID;
  glm_vec3_zero(cam->targetOffset);
  glm_vec3_zero(cam->eyeOffset);
  cam->scale = 1.0f;
}

entityoverworldcamera_t * entityOverworldCameraGet(
  const entityid_t entityId,
  const componentid_t componentId
) {
  return componentGetData(entityId, componentId, COMPONENT_TYPE_OVERWORLD_CAMERA);
}

void entityOverworldCameraSetTarget(
  const entityid_t entityId,
  const componentid_t componentId,
  const entityid_t targetEntityId,
  const componentid_t targetPosCompId
) {
  entityoverworldcamera_t *cam = entityOverworldCameraGet(entityId, componentId);
  cam->targetEntityId = targetEntityId;
  cam->targetPosCompId = targetPosCompId;
}

errorret_t entityOverworldCameraRender(
  const entityid_t entityId,
  const componentid_t componentId
) {
  entityoverworldcamera_t *cam = entityOverworldCameraGet(entityId, componentId);

  vec3 targetPos;
  entityPositionGetWorldPosition(
    cam->targetEntityId, cam->targetPosCompId, targetPos
  );

  vec3 center = {
    targetPos[0] + cam->targetOffset[0],
    targetPos[1] + cam->targetOffset[1],
    targetPos[2] + cam->targetOffset[2]
  };

  componentid_t posComp = entityGetComponent(entityId, COMPONENT_TYPE_POSITION);
  componentid_t camComp = entityGetComponent(entityId, COMPONENT_TYPE_CAMERA);
  entityCameraLookAtPixelPerfect(
    entityId, posComp, camComp, center, cam->eyeOffset, cam->scale
  );
  errorOk();
}