package json

import (
	"encoding/json"
	"fmt"

	ctyjson "github.com/zclconf/go-cty/cty/json"

	"github.com/hashicorp/terraform/internal/plans"
	"github.com/hashicorp/terraform/internal/states"
	"github.com/hashicorp/terraform/internal/tfdiags"
)

type Output struct {
	Sensitive bool            `json:"sensitive"`
	Type      json.RawMessage `json:"type,omitempty"`
	Value     json.RawMessage `json:"value,omitempty"`
	Action    ChangeAction    `json:"action,omitempty"`
}

type Outputs map[string]Output

func OutputsFromMap(outputValues map[string]*states.OutputValue) (Outputs, tfdiags.Diagnostics) {
	var diags tfdiags.Diagnostics

	outputs := make(map[string]Output, len(outputValues))

	for name, ov := range outputValues {
		unmarked, _ := ov.Value.UnmarkDeep()
		value, err := ctyjson.Marshal(unmarked, unmarked.Type())
		if err != nil {
			diags = diags.Append(tfdiags.Sourceless(
				tfdiags.Error,
				fmt.Sprintf("Error serializing output %q", name),
				fmt.Sprintf("Error: %s", err),
			))
			return nil, diags
		}
		valueType, err := ctyjson.MarshalType(unmarked.Type())
		if err != nil {
			diags = diags.Append(err)
			return nil, diags
		}

		outputs[name] = Output{
			Sensitive: ov.Sensitive,
			Type:      json.RawMessage(valueType),
			Value:     json.RawMessage(value),
		}
	}

	return outputs, nil
}

func OutputsFromChanges(changes []*plans.OutputChangeSrc) Outputs {
	outputs := make(map[string]Output, len(changes))

	for _, change := range changes {
		outputs[change.Addr.OutputValue.Name] = Output{
			Sensitive: change.Sensitive,
			Action:    changeAction(change.Action),
		}
	}

	return outputs
}

func (o Outputs) String() string {
	return fmt.Sprintf("Outputs: %d", len(o))
}