package util

import (
	"slices"
	"strings"

	"github.com/spf13/cobra"

	"gitea.libretechconsulting.com/rmcguire/eia-api-go/pkg/eia"
)

// Given args of <route> <facet>, complete either the route arg or the
// facet arg, whichever is appropriate
func CompleteRouteOrFacet(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if len(args) < 1 {
		return CompleteRoute(cmd, args, toComplete)
	}
	return CompleteFacet(cmd, args, toComplete)
}

func CompleteFacet(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	facets, err := GetFacets(cmd, args[0])
	if err != nil {
		Logger(cmd).Err(err).Send()
		return nil, cobra.ShellCompDirectiveError
	} else if facets.FacetOptions == nil || len(*facets.FacetOptions) < 1 {
		Logger(cmd).Error().Str("route", args[0]).Msg("no facets found for route")
		return nil, cobra.ShellCompDirectiveError
	}

	compFacets := make([]string, 0, len(*facets.FacetOptions))
	for _, facet := range *facets.FacetOptions {
		if strings.HasPrefix(facet, toComplete) {
			compFacets = append(compFacets, facet)
		}
	}

	return slices.Clip(compFacets), cobra.ShellCompDirectiveNoFileComp
}

func CompleteRoute(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	routes := eia.GetRoutes("Facet")
	compRoutes := make([]string, 0, len(routes))

	for _, r := range routes {
		if strings.HasPrefix(r, toComplete) {
			compRoutes = append(compRoutes, r)
		}
	}

	return slices.Clip(compRoutes), cobra.ShellCompDirectiveNoFileComp
}