# ***************************************************************************
# *   Copyright (c) 2021 Bernd Hahnebach <bernd@bimstatik.org>              *
# *                                                                         *
# *   This file is part of the FreeCAD CAx development system.              *
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# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
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# *   GNU Library General Public License for more details.                  *
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__title__ = "FreeCAD FEM calculix constraint centrif"
__author__ = "Bernd Hahnebach"
__url__ = "https://www.freecad.org"


import math

import FreeCAD


def get_analysis_types():
    return ["buckling", "static", "thermomech"]


def get_sets_name():
    return "constraints_centrif_element_sets"


def get_constraint_title():
    return "Centrif Constraints"


def get_before_write_meshdata_constraint():
    return ""


def get_after_write_meshdata_constraint():
    return ""


def get_before_write_constraint():
    return ""


def get_after_write_constraint():
    return ""


def write_meshdata_constraint(f, femobj, centrif_obj, ccxwriter):
    f.write("*ELSET,ELSET={}\n".format(centrif_obj.Name))
    if isinstance(femobj["FEMElements"], str):
        f.write("{}\n".format(femobj["FEMElements"]))
    else:
        for e in femobj["FEMElements"]:
            f.write("{},\n".format(e))


def write_constraint(f, femobj, centrif_obj, ccxwriter):

    # floats read from ccx should use {:.13G}, see comment in writer module

    # get some data from the centrif_obj
    refobj = centrif_obj.RotationAxis[0][0]
    subobj = centrif_obj.RotationAxis[0][1][0]
    axis = refobj.Shape.getElement(subobj)

    if axis.Curve.TypeId == "Part::GeomLine":
        axiscopy = axis.copy()  # apply global placement to copy
        axiscopy.Placement = refobj.getGlobalPlacement()
        direction = axiscopy.Curve.Direction
        location = axiscopy.Curve.Location
    else:  # no line found, set default
        # TODO: No test at all in the writer
        # they should all be before in prechecks
        location = FreeCAD.Vector(0., 0., 0.)
        direction = FreeCAD.Vector(0., 0., 1.)

    # write to file
    f.write("*DLOAD\n")
    f.write(
        "{},CENTRIF,{:.13G},{:.13G},{:.13G},{:.13G},{:.13G},{:.13G},{:.13G}\n"
        .format(
            centrif_obj.Name,
            (2. * math.pi * float(centrif_obj.RotationFrequency.getValueAs("1/s"))) ** 2,
            location.x,
            location.y,
            location.z,
            direction.x,
            direction.y,
            direction.z
        )
    )
    f.write("\n")