import json

from moto.core.common_types import TYPE_RESPONSE
from moto.core.config import default_user_config
from moto.core.responses import BaseResponse

from .models import StepFunctionBackend, stepfunctions_backends
from .parser.api import ExecutionStatus


class StepFunctionResponse(BaseResponse):
    def __init__(self) -> None:
        super().__init__(service_name="stepfunctions")

    @property
    def stepfunction_backend(self) -> StepFunctionBackend:
        if default_user_config.get("stepfunctions", {}).get(
            "execute_state_machine", False
        ):
            from .parser.models import stepfunctions_parser_backends

            return stepfunctions_parser_backends[self.current_account][self.region]
        else:
            return stepfunctions_backends[self.current_account][self.region]

    def create_state_machine(self) -> TYPE_RESPONSE:
        name = self._get_param("name")
        definition = self._get_param("definition")
        roleArn = self._get_param("roleArn")
        tags = self._get_param("tags")
        state_machine = self.stepfunction_backend.create_state_machine(
            name=name, definition=definition, roleArn=roleArn, tags=tags
        )
        response = {
            "creationDate": state_machine.creation_date,
            "stateMachineArn": state_machine.arn,
        }
        return 200, {}, json.dumps(response)

    def list_state_machines(self) -> TYPE_RESPONSE:
        max_results = self._get_int_param("maxResults")
        next_token = self._get_param("nextToken")
        results, next_token = self.stepfunction_backend.list_state_machines(
            max_results=max_results, next_token=next_token
        )
        state_machines = [
            {
                "creationDate": sm.creation_date,
                "name": sm.name,
                "stateMachineArn": sm.arn,
            }
            for sm in results
        ]
        response = {"stateMachines": state_machines}
        if next_token:
            response["nextToken"] = next_token
        return 200, {}, json.dumps(response)

    def describe_state_machine(self) -> TYPE_RESPONSE:
        arn = self._get_param("stateMachineArn")
        return self._describe_state_machine(arn)

    def _describe_state_machine(self, state_machine_arn: str) -> TYPE_RESPONSE:
        state_machine = self.stepfunction_backend.describe_state_machine(
            state_machine_arn
        )
        response = {
            "creationDate": state_machine.creation_date,
            "stateMachineArn": state_machine.arn,
            "definition": state_machine.definition,
            "name": state_machine.name,
            "roleArn": state_machine.roleArn,
            "status": "ACTIVE",
        }
        return 200, {}, json.dumps(response)

    def delete_state_machine(self) -> TYPE_RESPONSE:
        arn = self._get_param("stateMachineArn")
        self.stepfunction_backend.delete_state_machine(arn)
        return 200, {}, json.dumps("{}")

    def update_state_machine(self) -> TYPE_RESPONSE:
        arn = self._get_param("stateMachineArn")
        definition = self._get_param("definition")
        role_arn = self._get_param("roleArn")
        state_machine = self.stepfunction_backend.update_state_machine(
            arn=arn, definition=definition, role_arn=role_arn
        )
        response = {
            "updateDate": state_machine.update_date,
        }
        return 200, {}, json.dumps(response)

    def list_tags_for_resource(self) -> TYPE_RESPONSE:
        arn = self._get_param("resourceArn")
        tags = self.stepfunction_backend.list_tags_for_resource(arn)
        response = {"tags": tags}
        return 200, {}, json.dumps(response)

    def tag_resource(self) -> TYPE_RESPONSE:
        arn = self._get_param("resourceArn")
        tags = self._get_param("tags", [])
        self.stepfunction_backend.tag_resource(arn, tags)
        return 200, {}, json.dumps({})

    def untag_resource(self) -> TYPE_RESPONSE:
        arn = self._get_param("resourceArn")
        tag_keys = self._get_param("tagKeys", [])
        self.stepfunction_backend.untag_resource(arn, tag_keys)
        return 200, {}, json.dumps({})

    def start_execution(self) -> TYPE_RESPONSE:
        arn = self._get_param("stateMachineArn")
        name = self._get_param("name")
        execution_input = self._get_param("input", if_none="{}")
        execution = self.stepfunction_backend.start_execution(
            arn, name, execution_input
        )
        response = {
            "executionArn": execution.execution_arn,
            "startDate": execution.start_date,
        }
        return 200, {}, json.dumps(response)

    def list_executions(self) -> TYPE_RESPONSE:
        max_results = self._get_int_param("maxResults")
        next_token = self._get_param("nextToken")
        arn = self._get_param("stateMachineArn")
        status_filter = self._get_param("statusFilter")
        state_machine = self.stepfunction_backend.describe_state_machine(arn)
        results, next_token = self.stepfunction_backend.list_executions(
            arn,
            status_filter=status_filter,
            max_results=max_results,
            next_token=next_token,
        )
        executions = [
            {
                "executionArn": execution.execution_arn,
                "name": execution.name,
                "startDate": execution.start_date,
                "stopDate": execution.stop_date,
                "stateMachineArn": state_machine.arn,
                "status": execution.status,
            }
            for execution in results
        ]
        response = {"executions": executions}
        if next_token:
            response["nextToken"] = next_token
        return 200, {}, json.dumps(response)

    def describe_execution(self) -> TYPE_RESPONSE:
        arn = self._get_param("executionArn")
        execution = self.stepfunction_backend.describe_execution(arn)
        response = {
            "executionArn": arn,
            "input": json.dumps(execution.execution_input),
            "name": execution.name,
            "startDate": execution.start_date,
            "stateMachineArn": execution.state_machine_arn,
            "status": execution.status,
            "stopDate": execution.stop_date,
        }
        if execution.status == ExecutionStatus.SUCCEEDED:
            response["output"] = execution.output
            response["outputDetails"] = execution.output_details
        if execution.error is not None:
            response["error"] = execution.error
        if execution.cause is not None:
            response["cause"] = execution.cause
        return 200, {}, json.dumps(response)

    def describe_state_machine_for_execution(self) -> TYPE_RESPONSE:
        arn = self._get_param("executionArn")
        sm = self.stepfunction_backend.describe_state_machine_for_execution(arn)
        return self._describe_state_machine(sm.arn)

    def stop_execution(self) -> TYPE_RESPONSE:
        arn = self._get_param("executionArn")
        execution = self.stepfunction_backend.stop_execution(arn)
        response = {"stopDate": execution.stop_date}
        return 200, {}, json.dumps(response)

    def get_execution_history(self) -> TYPE_RESPONSE:
        execution_arn = self._get_param("executionArn")
        execution_history = self.stepfunction_backend.get_execution_history(
            execution_arn
        )
        response = {"events": execution_history}
        return 200, {}, json.dumps(response)

    def send_task_failure(self) -> TYPE_RESPONSE:
        task_token = self._get_param("taskToken")
        self.stepfunction_backend.send_task_failure(task_token)
        return 200, {}, "{}"

    def send_task_heartbeat(self) -> TYPE_RESPONSE:
        task_token = self._get_param("taskToken")
        self.stepfunction_backend.send_task_heartbeat(task_token)
        return 200, {}, "{}"

    def send_task_success(self) -> TYPE_RESPONSE:
        task_token = self._get_param("taskToken")
        outcome = self._get_param("outcome")
        self.stepfunction_backend.send_task_success(task_token, outcome)
        return 200, {}, "{}"

    def list_map_runs(self) -> TYPE_RESPONSE:
        execution_arn = self._get_param("executionArn")
        runs = self.stepfunction_backend.list_map_runs(execution_arn)
        return 200, {}, json.dumps(runs)

    def describe_map_run(self) -> TYPE_RESPONSE:
        map_run_arn = self._get_param("mapRunArn")
        run = self.stepfunction_backend.describe_map_run(map_run_arn)
        return 200, {}, json.dumps(run)

    def update_map_run(self) -> TYPE_RESPONSE:
        map_run_arn = self._get_param("mapRunArn")
        max_concurrency = self._get_param("maxConcurrency")
        tolerated_failure_count = self._get_param("toleratedFailureCount")
        tolerated_failure_percentage = self._get_param("toleratedFailurePercentage")
        self.stepfunction_backend.update_map_run(
            map_run_arn,
            max_concurrency,
            tolerated_failure_count=tolerated_failure_count,
            tolerated_failure_percentage=tolerated_failure_percentage,
        )
        return 200, {}, "{}"
