// Copyright 2016-2018, Pulumi Corporation.
//
// 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.

package resource

import (
	"github.com/pulumi/pulumi/pkg/tokens"
	"github.com/pulumi/pulumi/pkg/util/contract"
)

// State is a structure containing state associated with a resource.  This resource may have been serialized and
// deserialized, or snapshotted from a live graph of resource objects.  The value's state is not, however, associated
// with any runtime objects in memory that may be actively involved in ongoing computations.
// nolint: lll
type State struct {
	Type                    tokens.Type           // the resource's type.
	URN                     URN                   // the resource's object urn, a human-friendly, unique name for the resource.
	Custom                  bool                  // true if the resource is custom, managed by a plugin.
	Delete                  bool                  // true if this resource is pending deletion due to a replacement.
	ID                      ID                    // the resource's unique ID, assigned by the resource provider (or blank if none/uncreated).
	Inputs                  PropertyMap           // the resource's input properties (as specified by the program).
	Outputs                 PropertyMap           // the resource's complete output state (as returned by the resource provider).
	Parent                  URN                   // an optional parent URN that this resource belongs to.
	Protect                 bool                  // true to "protect" this resource (protected resources cannot be deleted).
	External                bool                  // true if this resource is "external" to Pulumi and we don't control the lifecycle
	Dependencies            []URN                 // the resource's dependencies
	InitErrors              []string              // the set of errors encountered in the process of initializing resource.
	Provider                string                // the provider to use for this resource.
	PropertyDependencies    map[PropertyKey][]URN // the set of dependencies that affect each property.
	PendingReplacement      bool                  // true if this resource was deleted and is awaiting replacement.
	AdditionalSecretOutputs []PropertyKey         // an additional set of outputs that should be treated as secrets.
	Aliases                 []URN                 // TODO
	CustomTimeouts          CustomTimeouts        // A config block that will be used to configure timeouts for CRUD operations
}

// NewState creates a new resource value from existing resource state information.
func NewState(t tokens.Type, urn URN, custom bool, del bool, id ID,
	inputs PropertyMap, outputs PropertyMap, parent URN, protect bool,
	external bool, dependencies []URN, initErrors []string, provider string,
	propertyDependencies map[PropertyKey][]URN, pendingReplacement bool,
	additionalSecretOutputs []PropertyKey, aliases []URN, timeouts *CustomTimeouts) *State {

	contract.Assertf(t != "", "type was empty")
	contract.Assertf(custom || id == "", "is custom or had empty ID")
	contract.Assertf(inputs != nil, "inputs was non-nil")

	s := &State{
		Type:                    t,
		URN:                     urn,
		Custom:                  custom,
		Delete:                  del,
		ID:                      id,
		Inputs:                  inputs,
		Outputs:                 outputs,
		Parent:                  parent,
		Protect:                 protect,
		External:                external,
		Dependencies:            dependencies,
		InitErrors:              initErrors,
		Provider:                provider,
		PropertyDependencies:    propertyDependencies,
		PendingReplacement:      pendingReplacement,
		AdditionalSecretOutputs: additionalSecretOutputs,
		Aliases:                 aliases,
	}

	if timeouts != nil {
		s.CustomTimeouts = *timeouts
	}

	return s
}
