// Package cmd
// This file was generated by .tools/generate_commands.py on Sat Oct 28 2017 18:15:49 -0500
package cmd

import (
	"flag"
	"fmt"
	"os"
	"regexp"
	"strconv"
	"strings"

	"github.com/peterh/liner"
	"github.com/siddontang/goredis"
)

var helpCommands = [][]string{
	{"APPEND", "key value", "KV"},
	{"BITCOUNT", "key [start] [end]", "KV"},
	{"BITOP", "operation destkey key [key ...]", "KV"},
	{"BITPOS", "key bit [start] [end]", "KV"},
	{"BLPOP", "key [key ...] timeout", "List"},
	{"BRPOP", "key [key ...] timeout", "List"},
	{"CONFIG GET", "parameter", "Server"},
	{"CONFIG REWRITE", "-", "Server"},
	{"DECR", "key", "KV"},
	{"DECRBY", "key decrement", "KV"},
	{"DEL", "key [key ...]", "KV"},
	{"DUMP", "key", "KV"},
	{"ECHO", "message", "Server"},
	{"EVAL", "script numkeys key [key ...] arg [arg ...]", "Script"},
	{"EVALSHA", "sha1 numkeys key [key ...] arg [arg ...]", "Script"},
	{"EXISTS", "key", "KV"},
	{"EXPIRE", "key seconds", "KV"},
	{"EXPIREAT", "key timestamp", "KV"},
	{"FLUSHALL", "-", "Server"},
	{"FLUSHDB", "-", "Server"},
	{"FULLSYNC", "[NEW]", "Replication"},
	{"GET", "key", "KV"},
	{"GETBIT", "key offset", "KV"},
	{"GETRANGE", "key start end", "KV"},
	{"GETSET", " key value", "KV"},
	{"HCLEAR", "key", "Hash"},
	{"HDEL", "key field [field ...]", "Hash"},
	{"HDUMP", "key", "Hash"},
	{"HEXISTS", "key field", "Hash"},
	{"HEXPIRE", "key seconds", "Hash"},
	{"HEXPIREAT", "key timestamp", "Hash"},
	{"HGET", "key field", "Hash"},
	{"HGETALL", "key", "Hash"},
	{"HINCRBY", "key field increment", "Hash"},
	{"HKEYEXISTS", "key", "Hash"},
	{"HKEYS", "key", "Hash"},
	{"HLEN", "key", "Hash"},
	{"HMCLEAR", "key [key ...]", "Hash"},
	{"HMGET", "key field [field ...]", "Hash"},
	{"HMSET", "key field value [field value ...]", "Hash"},
	{"HPERSIST", "key", "Hash"},
	{"HSCAN", "key cursor [MATCH match] [COUNT count] [ASC|DESC]", "Hash"},
	{"HSET", "key field value", "Hash"},
	{"HTTL", "key", "Hash"},
	{"HVALS", "key", "Hash"},
	{"INCR", "key", "KV"},
	{"INCRBY", "key increment", "KV"},
	{"INFO", "[section]", "Server"},
	{"LCLEAR", "key", "List"},
	{"LDUMP", "key", "List"},
	{"LEXPIRE", "key seconds", "List"},
	{"LEXPIREAT", "key timestamp", "List"},
	{"LINDEX", "key index", "List"},
	{"LKEYEXISTS", "key", "List"},
	{"LLEN", "key", "List"},
	{"LMCLEAR", "key [key ...]", "List"},
	{"LPERSIST", "key", "List"},
	{"LPOP", "key", "List"},
	{"LPUSH", "key value [value ...]", "List"},
	{"LRANGE", "key start stop", "List"},
	{"LSET", "key index value", "List"},
	{"LTTL", "key", "List"},
	{"MGET", "key [key ...]", "KV"},
	{"MSET", "key value [key value ...]", "KV"},
	{"PERSIST", "key", "KV"},
	{"PING", "-", "Server"},
	{"RESTORE", "key ttl value", "Server"},
	{"ROLE", "-", "Server"},
	{"RPOP", "key", "List"},
	{"RPUSH", "key value [value ...]", "List"},
	{"SADD", "key member [member ...]", "Set"},
	{"SCARD", "key", "Set"},
	{"SCLEAR", "key", "Set"},
	{"SCRIPT EXISTS", "script [script ...]", "Script"},
	{"SCRIPT FLUSH", "-", "Script"},
	{"SCRIPT LOAD", "script", "Script"},
	{"SDIFF", "key [key ...]", "Set"},
	{"SDIFFSTORE", "destination key [key ...]", "Set"},
	{"SDUMP", "key", "Set"},
	{"SELECT", "index", "Server"},
	{"SET", "key value", "KV"},
	{"SETBIT", "key offset value", "KV"},
	{"SETEX", "key seconds value", "KV"},
	{"SETNX", "key value", "KV"},
	{"SETRANGE", "key offset value", "KV"},
	{"SEXPIRE", "key seconds", "Set"},
	{"SEXPIREAT", "key timestamp", "Set"},
	{"SINTER", "key [key ...]", "Set"},
	{"SINTERSTORE", "destination key [key ...]", "Set"},
	{"SISMEMBER", "key member", "Set"},
	{"SKEYEXISTS", "key", "Set"},
	{"SLAVEOF", "host port [RESTART] [READONLY]", "Replication"},
	{"SMCLEAR", "key [key ...]", "Set"},
	{"SMEMBERS", "key", "Set"},
	{"SPERSIST", "key", "Set"},
	{"SREM", "key member [member ...]", "Set"},
	{"SSCAN", "key cursor [MATCH match] [COUNT count] [ASC|DESC]", "Set"},
	{"STRLEN", "key", "KV"},
	{"STTL", "key", "Set"},
	{"SUNION", "key [key ...]", "Set"},
	{"SUNIONSTORE", "destination key [key ...]", "Set"},
	{"SYNC", "logid", "Replication"},
	{"TIME", "-", "Server"},
	{"TTL", "key", "KV"},
	{"XHSCAN", "key cursor [MATCH match] [COUNT count] [ASC|DESC]", "Hash"},
	{"XLSORT", "key [BY pattern] [LIMIT offset count] [GET pattern [GET pattern ...]] [ASC|DESC] [ALPHA] [STORE destination]", "List"},
	{"XSCAN", "type cursor [MATCH match] [COUNT count] [ASC|DESC]", "Server"},
	{"XSSCAN", "key cursor [MATCH match] [COUNT count] [ASC|DESC]", "Set"},
	{"XSSORT", "key [BY pattern] [LIMIT offset count] [GET pattern [GET pattern ...]] [ASC|DESC] [ALPHA] [STORE destination]", "Set"},
	{"XZSCAN", "key cursor [MATCH match] [COUNT count] [ASC|DESC]", "ZSet"},
	{"XZSORT", "key [BY pattern] [LIMIT offset count] [GET pattern [GET pattern ...]] [ASC|DESC] [ALPHA] [STORE destination]", "ZSet"},
	{"ZADD", "key score member [score member ...]", "ZSet"},
	{"ZCARD", "key", "ZSet"},
	{"ZCLEAR", "key", "ZSet"},
	{"ZCOUNT", "key min max", "ZSet"},
	{"ZDUMP", "key", "ZSet"},
	{"ZEXPIRE", "key seconds", "ZSet"},
	{"ZEXPIREAT", "key timestamp", "ZSet"},
	{"ZINCRBY", "key increment member", "ZSet"},
	{"ZINTERSTORE", "destkey numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]", "ZSet"},
	{"ZKEYEXISTS", "key", "ZSet"},
	{"ZLEXCOUNT", "key min max", "ZSet"},
	{"ZMCLEAR", "key [key ...]", "ZSet"},
	{"ZPERSIST", "key", "ZSet"},
	{"ZRANGE", "key start stop [WITHSCORES]", "ZSet"},
	{"ZRANGEBYLEX", "key min max [LIMIT offset count]", "ZSet"},
	{"ZRANGEBYSCORE", "key min max [WITHSCORES] [LIMIT offset count]", "ZSet"},
	{"ZRANK", "key member", "ZSet"},
	{"ZREM", "key member [member ...]", "ZSet"},
	{"ZREMRANGBYLEX", "key min max", "ZSet"},
	{"ZREMRANGEBYRANK", "key start stop", "ZSet"},
	{"ZREMRANGEBYSCORE", "key min max", "ZSet"},
	{"ZREVRANGE", "key start stop [WITHSCORES]", "ZSet"},
	{"ZREVRANGEBYSCORE", "key max min  [WITHSCORES][LIMIT offset count]", "ZSet"},
	{"ZREVRANK", "key member", "ZSet"},
	{"ZSCAN", "key cursor [MATCH match] [COUNT count] [ASC|DESC]", "ZSet"},
	{"ZSCORE", "key member", "ZSet"},
	{"ZTTL", "key", "ZSet"},
	{"ZUNIONSTORE", "destkey numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]", "ZSet"},
}

var ip = flag.String("h", "127.0.0.1", "ledisdb server ip (default 127.0.0.1)")
var port = flag.Int("p", 6380, "ledisdb server port (default 6380)")
var socket = flag.String("s", "", "ledisdb server socket, overwrite ip and port")

var (
	line        *liner.State
	historyPath = "/tmp/ledis-cli"
)

func Cli() {
	var dbn = flag.Int("n", 0, "ledisdb database number(default 0)")

	flag.Parse()

	line = liner.NewLiner()
	defer line.Close()

	line.SetCtrlCAborts(true)

	setCompletionHandler()
	loadHisotry()

	defer saveHisotry()

	var addr string
	if len(*socket) > 0 {
		addr = *socket
	} else {
		addr = fmt.Sprintf("%s:%d", *ip, *port)
	}

	c := goredis.NewClient(addr, "")
	c.SetMaxIdleConns(1)
	sendSelect(c, *dbn)

	reg, _ := regexp.Compile(`'.*?'|".*?"|\S+`)

	prompt := ""

	for {
		if *dbn > 0 && *dbn < 16 {
			prompt = fmt.Sprintf("%s[%d]> ", addr, *dbn)
		} else {
			prompt = fmt.Sprintf("%s> ", addr)
		}

		cmd, err := line.Prompt(prompt)
		if err != nil {
			fmt.Printf("%s\n", err.Error())
			return
		}

		cmds := reg.FindAllString(cmd, -1)
		if len(cmds) == 0 {
			continue
		} else {
			line.AppendHistory(cmd)

			args := make([]interface{}, len(cmds[1:]))

			for i := range args {
				args[i] = strings.Trim(string(cmds[1+i]), "\"'")
			}

			cmd := strings.ToLower(cmds[0])
			if cmd == "help" || cmd == "?" {
				printHelp(cmds)
			} else {
				r, err := c.Do(cmds[0], args...)

				if err == nil && strings.ToLower(cmds[0]) == "select" {
					*dbn, _ = strconv.Atoi(cmds[1])
				}

				if err != nil {
					fmt.Printf("%s", err.Error())
				} else {
					if cmd == "info" {
						printInfo(r.([]byte))
					} else {
						printReply(0, r)
					}
				}

				fmt.Printf("\n")
			}

		}
	}
}

func printInfo(s []byte) {
	fmt.Printf("%s", s)
}

func printReply(level int, reply interface{}) {
	switch reply := reply.(type) {
	case int64:
		fmt.Printf("(integer) %d", reply)
	case string:
		fmt.Printf("%s", reply)
	case []byte:
		fmt.Printf("%q", reply)
	case nil:
		fmt.Printf("(nil)")
	case goredis.Error:
		fmt.Printf("%s", string(reply))
	case []interface{}:
		for i, v := range reply {
			if i != 0 {
				fmt.Printf("%s", strings.Repeat(" ", level*4))
			}

			s := fmt.Sprintf("%d) ", i+1)
			fmt.Printf("%-4s", s)

			printReply(level+1, v)
			if i != len(reply)-1 {
				fmt.Printf("\n")
			}
		}
	default:
		fmt.Printf("invalid ledis reply")
	}
}

func printGenericHelp() {
	msg :=
		`ledis-cli
Type:	"help <command>" for help on <command>
	`
	fmt.Println(msg)
}

func printCommandHelp(arr []string) {
	fmt.Println()
	fmt.Printf("\t%s %s \n", arr[0], arr[1])
	fmt.Printf("\tGroup: %s \n", arr[2])
	fmt.Println()
}

func printHelp(cmds []string) {
	args := cmds[1:]
	if len(args) == 0 {
		printGenericHelp()
	} else if len(args) > 1 {
		fmt.Println()
	} else {
		cmd := strings.ToUpper(args[0])
		for i := 0; i < len(helpCommands); i++ {
			if helpCommands[i][0] == cmd {
				printCommandHelp(helpCommands[i])
			}
		}
	}
}

func sendSelect(client *goredis.Client, index int) {
	if index > 16 || index < 0 {
		index = 0
		fmt.Println("index out of range, should less than 16")
	}
	_, err := client.Do("select", index)
	if err != nil {
		fmt.Printf("%s\n", err.Error())
	}
}

func setCompletionHandler() {
	line.SetCompleter(func(line string) (c []string) {
		for _, i := range helpCommands {
			if strings.HasPrefix(i[0], strings.ToLower(line)) {
				c = append(c, i[0])
			}
		}
		return
	})
}

func loadHisotry() {
	if f, err := os.Open(historyPath); err == nil {
		line.ReadHistory(f)
		f.Close()
	}
}

func saveHisotry() {
	if f, err := os.Create(historyPath); err != nil {
		fmt.Printf("Error writing history file, err: %v", err)
	} else {
		line.WriteHistory(f)
		f.Close()
	}
}