package config

import (
	"context"
	"fmt"

	"github.com/databricks/cli/bundle/config/resources"
	"github.com/databricks/databricks-sdk-go"
)

// Resources defines Databricks resources associated with the bundle.
type Resources struct {
	Jobs      map[string]*resources.Job      `json:"jobs,omitempty"`
	Pipelines map[string]*resources.Pipeline `json:"pipelines,omitempty"`

	Models                map[string]*resources.MlflowModel          `json:"models,omitempty"`
	Experiments           map[string]*resources.MlflowExperiment     `json:"experiments,omitempty"`
	ModelServingEndpoints map[string]*resources.ModelServingEndpoint `json:"model_serving_endpoints,omitempty"`
	RegisteredModels      map[string]*resources.RegisteredModel      `json:"registered_models,omitempty"`
	QualityMonitors       map[string]*resources.QualityMonitor       `json:"quality_monitors,omitempty"`
	Schemas               map[string]*resources.Schema               `json:"schemas,omitempty"`
	Clusters              map[string]*resources.Cluster              `json:"clusters,omitempty"`
}

type ConfigResource interface {
	// Function to assert if the resource exists in the workspace configured in
	// the input workspace client.
	Exists(ctx context.Context, w *databricks.WorkspaceClient, id string) (bool, error)

	// Terraform equivalent name of the resource. For example "databricks_job"
	// for jobs and "databricks_pipeline" for pipelines.
	TerraformResourceName() string
}

func (r *Resources) FindResourceByConfigKey(key string) (ConfigResource, error) {
	found := make([]ConfigResource, 0)
	for k := range r.Jobs {
		if k == key {
			found = append(found, r.Jobs[k])
		}
	}
	for k := range r.Pipelines {
		if k == key {
			found = append(found, r.Pipelines[k])
		}
	}

	if len(found) == 0 {
		return nil, fmt.Errorf("no such resource: %s", key)
	}

	if len(found) > 1 {
		keys := make([]string, 0, len(found))
		for _, r := range found {
			keys = append(keys, fmt.Sprintf("%s:%s", r.TerraformResourceName(), key))
		}
		return nil, fmt.Errorf("ambiguous: %s (can resolve to all of %s)", key, keys)
	}

	return found[0], nil
}

type ResourceDescription struct {
	SingularName string
}

// The keys of the map corresponds to the resource key in the bundle configuration.
func SupportedResources() map[string]ResourceDescription {
	return map[string]ResourceDescription{
		"jobs":                    {SingularName: "job"},
		"pipelines":               {SingularName: "pipeline"},
		"models":                  {SingularName: "model"},
		"experiments":             {SingularName: "experiment"},
		"model_serving_endpoints": {SingularName: "model_serving_endpoint"},
		"registered_models":       {SingularName: "registered_model"},
		"quality_monitors":        {SingularName: "quality_monitor"},
		"schemas":                 {SingularName: "schema"},
		"clusters":                {SingularName: "cluster"},
	}
}