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// Copyright 2017 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.

package main

import (
    "fmt"
    "os"
    "strings"
    "text/tabwriter"

    "github.com/ethereum/go-ethereum/cmd/utils"
    swarm "github.com/ethereum/go-ethereum/swarm/api/client"
    "gopkg.in/urfave/cli.v1"
)

func list(ctx *cli.Context) {
    args := ctx.Args()

    if len(args) < 1 {
        utils.Fatalf("Please supply a manifest reference as the first argument")
    } else if len(args) > 2 {
        utils.Fatalf("Too many arguments - usage 'swarm ls manifest [prefix]'")
    }
    manifest := args[0]

    var prefix string
    if len(args) == 2 {
        prefix = args[1]
    }

    bzzapi := strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/")
    client := swarm.NewClient(bzzapi)
    list, err := client.List(manifest, prefix)
    if err != nil {
        utils.Fatalf("Failed to generate file and directory list: %s", err)
    }

    w := tabwriter.NewWriter(os.Stdout, 1, 2, 2, ' ', 0)
    defer w.Flush()
    fmt.Fprintln(w, "HASH\tCONTENT TYPE\tPATH")
    for _, prefix := range list.CommonPrefixes {
        fmt.Fprintf(w, "%s\t%s\t%s\n", "", "DIR", prefix)
    }
    for _, entry := range list.Entries {
        fmt.Fprintf(w, "%s\t%s\t%s\n", entry.Hash, entry.ContentType, entry.Path)
    }
}