package proxy

import (
	"os"
	"slices"

	"forge.cadoles.com/cadoles/bouncer/internal/client"
	"forge.cadoles.com/cadoles/bouncer/internal/command/admin/apierr"
	clientFlag "forge.cadoles.com/cadoles/bouncer/internal/command/admin/flag"
	"forge.cadoles.com/cadoles/bouncer/internal/store"
	"github.com/pkg/errors"
	"github.com/urfave/cli/v2"
	"gitlab.com/wpetit/goweb/cli/format"
)

func QueryCommand() *cli.Command {
	return &cli.Command{
		Name:  "query",
		Usage: "Query proxies",
		Flags: clientFlag.ComposeFlags(
			&cli.Int64SliceFlag{
				Name:  "ids",
				Usage: "use `IDS` as query filter",
			},
		),
		Action: func(ctx *cli.Context) error {
			baseFlags := clientFlag.GetBaseFlags(ctx)

			token, err := clientFlag.GetToken(baseFlags)
			if err != nil {
				return errors.WithStack(apierr.Wrap(err))
			}

			options := make([]client.QueryProxyOptionFunc, 0)

			rawNames := ctx.StringSlice("ids")
			if rawNames != nil {
				proxyNames := func(names []string) []store.ProxyName {
					proxyNames := make([]store.ProxyName, len(names))
					for i, name := range names {
						proxyNames[i] = store.ProxyName(name)
					}
					return proxyNames
				}(rawNames)
				options = append(options, client.WithQueryProxyNames(proxyNames...))
			}

			client := client.New(baseFlags.ServerURL, client.WithToken(token))

			proxies, err := client.QueryProxy(ctx.Context, options...)
			if err != nil {
				return errors.WithStack(apierr.Wrap(err))
			}

			slices.SortFunc(proxies, sortProxiesByWeight)

			hints := proxyHeaderHints(baseFlags.OutputMode)

			if err := format.Write(baseFlags.Format, os.Stdout, hints, clientFlag.AsAnySlice(proxies)...); err != nil {
				return errors.WithStack(err)
			}

			return nil
		},
	}
}

func sortProxiesByWeight(a *store.ProxyHeader, b *store.ProxyHeader) int {
	if a.Weight < b.Weight {
		return 1
	}
	if a.Weight > b.Weight {
		return -1
	}
	return 0
}