# Copyright 2021 kubeflow.org
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from kfp import dsl, components
from kfp_tekton.tekton import CEL_ConditionOp
from kfp_tekton.compiler import TektonCompiler


class Coder:
    def empty(self):
        return ""


TektonCompiler._get_unique_id_code = Coder.empty


print_op = components.load_component_from_text("""
name: print-iter
description: print msg
inputs:
  - {name: msg, type: String}
outputs:
  - {name: stdout, type: String}
implementation:
  container:
    image: alpine:3.6
    command:
    - sh
    - -c
    args:
    - |
      echo $0 > $1
    - {inputValue: msg}
    - {outputPath: stdout}
""")


@dsl.graph_component
def recur(i: int):
  decr_i = CEL_ConditionOp(f"{i} - 1").output
  print_op(f"Iter: {decr_i}")
  with dsl.Condition(decr_i != 0):
    recur(decr_i)


@dsl.pipeline("recur-and-condition")
def recur_and_condition(iter_num: int = 42):
  recur(iter_num)


if __name__ == '__main__':
  from kfp_tekton.compiler import TektonCompiler as Compiler
  Compiler().compile(recur_and_condition, __file__.replace('.py', '.yaml'))