package router

import (
	"github.com/go-chi/chi"
	"github.com/porter-dev/porter/api/server/handlers/stacks"
	"github.com/porter-dev/porter/api/server/shared"
	"github.com/porter-dev/porter/api/server/shared/config"
	"github.com/porter-dev/porter/api/server/shared/router"
	"github.com/porter-dev/porter/api/types"
)

func NewStackScopedRegisterer(children ...*router.Registerer) *router.Registerer {
	return &router.Registerer{
		GetRoutes: GetStackScopedRoutes,
		Children:  children,
	}
}

func GetStackScopedRoutes(
	r chi.Router,
	config *config.Config,
	basePath *types.Path,
	factory shared.APIEndpointFactory,
	children ...*router.Registerer,
) []*router.Route {
	routes, projPath := getStackRoutes(r, config, basePath, factory)

	if len(children) > 0 {
		r.Route(projPath.RelativePath, func(r chi.Router) {
			for _, child := range children {
				childRoutes := child.GetRoutes(r, config, basePath, factory, child.Children...)

				routes = append(routes, childRoutes...)
			}
		})
	}

	return routes
}

func getStackRoutes(
	r chi.Router,
	config *config.Config,
	basePath *types.Path,
	factory shared.APIEndpointFactory,
) ([]*router.Route, *types.Path) {
	relPath := "/stacks"

	newPath := &types.Path{
		Parent:       basePath,
		RelativePath: relPath,
	}

	var routes []*router.Route

	// POST /api/projects/{project_id}/clusters/{cluster_id}/stacks -> stacks.NewCreateStackHandler
	createEndpoint := factory.NewAPIEndpoint(
		&types.APIRequestMetadata{
			Verb:   types.APIVerbCreate,
			Method: types.HTTPVerbPost,
			Path: &types.Path{
				Parent:       basePath,
				RelativePath: relPath,
			},
			Scopes: []types.PermissionScope{
				types.UserScope,
				types.ProjectScope,
				types.ClusterScope,
			},
		},
	)

	createHandler := stacks.NewCreateStackHandler(
		config,
		factory.GetDecoderValidator(),
		factory.GetResultWriter(),
	)

	routes = append(routes, &router.Route{
		Endpoint: createEndpoint,
		Handler:  createHandler,
		Router:   r,
	})

	// PATCH /api/projects/{project_id}/clusters/{cluster_id}/stacks/{stack} -> stacks.NewUpdateStackHandler
	updateEndpoint := factory.NewAPIEndpoint(
		&types.APIRequestMetadata{
			Verb:   types.APIVerbCreate,
			Method: types.HTTPVerbPatch,
			Path: &types.Path{
				Parent:       basePath,
				RelativePath: relPath + "/{stack}",
			},
			Scopes: []types.PermissionScope{
				types.UserScope,
				types.ProjectScope,
				types.ClusterScope,
			},
		},
	)

	updateHandler := stacks.NewUpdateStackHandler(
		config,
		factory.GetDecoderValidator(),
		factory.GetResultWriter(),
	)

	routes = append(routes, &router.Route{
		Endpoint: updateEndpoint,
		Handler:  updateHandler,
		Router:   r,
	})
	return routes, newPath
}