package util

import (
	"strconv"
	"strings"

	"github.com/spf13/cobra"
	"golang.org/x/exp/slices"
)

func ValidProjectsFunc(cmd *cobra.Command, args []string, toComplete string) (
	[]string, cobra.ShellCompDirective,
) {
	u := MustFromCtx(cmd.Context())
	u.InitProjectCache(cmd, args)
	return u.Cache().ProjectStrings(toComplete), cobra.ShellCompDirectiveNoFileComp
}

func ValidAliasesFunc(cmd *cobra.Command, args []string, toComplete string) (
	[]string, cobra.ShellCompDirective,
) {
	utils := MustFromCtx(cmd.Context())
	utils.InitProjectCache(cmd, args)
	return utils.Cache().AliasStrings(toComplete), cobra.ShellCompDirectiveNoFileComp
}

func (u *Utils) ValidProjectsOrAliasesFunc(cmd *cobra.Command, args []string, toComplete string) (
	[]string, cobra.ShellCompDirective,
) {
	projectStrings, _ := ValidAliasesFunc(cmd, args, toComplete)
	aliasStrings, _ := ValidProjectsFunc(cmd, args, toComplete)
	return append(projectStrings, aliasStrings...), cobra.ShellCompDirectiveDefault
}

func ValidRemotesFunc(cmd *cobra.Command, _ []string, toComplete string) (
	[]string, cobra.ShellCompDirective,
) {
	u := MustFromCtx(cmd.Context())
	remotes := make([]string, 0, len(u.Config().Remotes))
	for _, remote := range u.Config().Remotes {
		if strings.HasPrefix(remote.Host, toComplete) {
			remotes = append(remotes, remote.Host)
		}
	}
	return remotes, cobra.ShellCompDirectiveNoFileComp
}

func ValidLogLevelsFunc(_ *cobra.Command, _ []string, toComplete string) (
	[]string, cobra.ShellCompDirective,
) {
	levels := []string{"info", "warn", "error", "debug"}
	matchingLevels := make([]string, 0, len(levels))
	for _, level := range levels {
		if strings.HasPrefix(level, toComplete) {
			matchingLevels = append(matchingLevels, level)
		}
	}
	return matchingLevels, cobra.ShellCompDirectiveNoFileComp
}

func ValidProjectIdFunc(cmd *cobra.Command, args []string, toComplete string) (
	[]string, cobra.ShellCompDirective,
) {
	u := MustFromCtx(cmd.Context())
	u.InitProjectCache(cmd, args)
	matchingIds := make([]string, 0, len(u.Cache().Projects))
	for _, p := range u.Cache().Projects {
		idString := strconv.FormatInt(int64(p.ID), 10)
		if strings.HasPrefix(idString, toComplete) {
			matchingIds = append(matchingIds, idString)
		}
	}
	return slices.Clip(matchingIds), cobra.ShellCompDirectiveNoFileComp
}