zordfsdb/command.go

// Copyright (C) 2025 Arns Udovič <zordsdavini@arns.lt>
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package zordfsdb

import (
	"fmt"
	"strings"
)

func ExecuteCommands(db *DB, commands string, lastPathPtr *string, lastKeyPtr *string) error {
	for _, command := range strings.Split(commands, ";") {
		lastPath := *lastPathPtr
		lastKey := *lastKeyPtr
		command = strings.Trim(command, " ")
		parts := strings.Split(command, " ")
		if len(parts) > 1 {
			if lastPath != "" {
				if parts[1] == "_" {
					parts[1] = lastPath
				} else {
					parts[1] = strings.Replace(parts[1], "_.", lastPath+".", 1)
				}
			}

			if lastKey != "" {
				parts[1] = strings.Replace(parts[1], "$", lastKey, 1)
			}

			lastPath = parts[1]
		}

		err, gotKey := ExecuteCommand(db, parts)
		if err != nil {
			return err
		}
		if gotKey != "" {
			*lastKeyPtr = gotKey
		}
	}

	return nil
}

func ExecuteCommand(db *DB, parts []string) (error, string) {
	var newId string

	switch strings.ToUpper(parts[0]) {
	case "HELP", "\\H":
		fmt.Println(`
ZordFsDB shell supported commands:

KEYS [path] - get list of existing properties/objects/lists
GET [path] - get value of property
INC [path] - increase abcex value in property
DEC [path] - decrease abcex value in property
NOW [path] - set value to datetime string in property
DEL [path] - remove property/object/list (no confirmation)
SAVE [path] [value] - set value to property
CREATE [path] - create list/object in path (parent path should exist)
ADD [path] - add abcex indexed object to list. Will return index
TEMPLATE [path] [template] - set template to list for object creation
INFO [path] - get all info about property/object/list
TREE [path] - draw db part in path with values
HELP - will print this help
QUIT - exit the shell

Last used path can be accessed by _
Last returned index (after ADD command) can be accessed by $

Short commands can be as:
KEYS(\K), GET(\G), INC(\I), DEC(\D), NOW(\N), DEL(\R), SAVE(\S), CREATE(\C), ADD(\A), INFO(\?), TREE(\T), HELP(\H), QUIT(\Q)
		`)

	case "KEYS", "\\K":
		kpath := "."
		if !(len(parts) == 1 || len(parts[1]) == 0) {
			kpath = parts[1]
		}

		fmt.Printf("{%s} KEYS: ", kpath)
		fmt.Println(db.Keys(kpath))
		fmt.Println("")

	case "INFO", "\\?":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: INFO [path]\n"), newId
		}

		node, ok := db.GetNode(parts[1])
		if !ok {
			fmt.Println("No path found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} INFO\n-----------------\n", parts[1])
			ntype := "property"
			if node.List {
				ntype = "list"
			} else if node.Object {
				ntype = "object"
			}
			fmt.Println("type:", ntype)
			if ntype == "property" {
				fmt.Println("value:", node.Value)
			} else {
				fmt.Println("keys:", db.Keys(parts[1]))
			}

			fmt.Println("")
		}

	case "TREE", "\\T":
		if len(parts) == 1 || len(parts[1]) == 0 || parts[1] == "." {
			fmt.Printf("TREE\n-----------------\n\\\n")
			printNodeTree(db, 1)
			fmt.Println("")
			break
		}

		node, ok := db.GetNode(parts[1])
		if !ok {
			return fmt.Errorf("err format: TREE [path]\n"), newId
		} else {
			fmt.Printf("{%s} TREE\n-----------------\n", parts[1])
			if !node.List && !node.Object {
				fmt.Printf("%s: %s\n\n", node.Key, node.Value)
				break
			}

			fmt.Println(node.Key)
			printNodeTree(&node, 1)
		}

		fmt.Println("")

	case "GET", "\\G":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: GET [path]\n"), newId
		}

		value, ok := db.Get(parts[1])
		if !ok {
			fmt.Println("No value found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} VALUE: ", parts[1])
			fmt.Println(value)
			fmt.Println("")
		}

	case "INC", "\\I":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: INC [path]\n"), newId
		}

		ok := db.Inc(parts[1])
		if !ok {
			fmt.Println("No value found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} INC OK\n", parts[1])
			fmt.Println("")
		}

	case "DEC", "\\D":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: DEC [path]\n"), newId
		}

		ok := db.Dec(parts[1])
		if !ok {
			fmt.Println("No value found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} DEC OK\n", parts[1])
			fmt.Println("")
		}

	case "NOW", "\\N":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: NOW [path]\n"), newId
		}

		ok := db.Now(parts[1])
		if !ok {
			fmt.Println("No value found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} NOW OK\n", parts[1])
			fmt.Println("")
		}

	case "DEL", "\\R":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: DEL [path]\n"), newId
		}

		ok := db.Del(parts[1])
		if !ok {
			fmt.Println("No value/object found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} DELETED\n", parts[1])
			fmt.Println("")
		}

	case "SAVE", "\\S":
		if len(parts) < 3 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: SAVE [path] [value|long value]\n"), newId
		}

		value := strings.Trim(strings.Join(parts[2:], " "), "\"")

		ok := db.Save(parts[1], value)
		if !ok {
			fmt.Println("No value found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} SAVED\n", parts[1])
			fmt.Println("")
		}
		db.Refresh()

	case "CREATE", "\\C":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: CREATE [path]\n"), newId
		}

		ok := db.CreateNode(parts[1])
		if !ok {
			fmt.Println("No path found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} CREATED\n", parts[1])
			fmt.Println("")
		}

	case "ADD", "\\A":
		if len(parts) == 1 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: ADD [path]\n"), newId
		}

		id, err := db.AddObject(parts[1])
		if err != nil {
			fmt.Println("No path found.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} ADDED with ID: %s\n", parts[1], id)
			fmt.Println("")
			newId = id
		}

	case "TEMPLATE":
		if len(parts) < 3 || len(parts[1]) == 0 {
			return fmt.Errorf("err format: TEMPLATE [path] [value|long value]\n"), newId
		}

		template := strings.Trim(strings.Join(parts[2:], " "), "\"")

		node, ok := db.GetNode(parts[1])
		if !ok {
			return fmt.Errorf("No path found\n"), newId
		}

		if !node.List {
			return fmt.Errorf("Path is not a list\n"), newId
		}

		ok = db.AddTemplate(parts[1], template)
		if !ok {
			fmt.Println("Template not added.")
			fmt.Println("")
		} else {
			fmt.Printf("{%s} TEMPLATE ADDED\n", parts[1])
			fmt.Println("")
		}

	default:
		return fmt.Errorf("err[00] unknown command, try HELP"), newId
	}

	return nil, newId
}

func printNodeTree(node GetNodes, i int) {
	for key, child := range node.GetNodes() {
		j := i - 1
		for j > 0 {
			fmt.Printf("│   ")
			j--
		}

		fmt.Printf("├── %s", key)
		if !child.List && !child.Object {
			fmt.Printf(": %s\n", child.Value)
		} else {
			fmt.Println("")
			printNodeTree(&child, i+1)
		}
	}
}