package main

import (
	"os"
	"strconv"
	"time"
	"velvettear/dedupe/files"
	"velvettear/dedupe/log"
	"velvettear/dedupe/prompts"
	"velvettear/dedupe/settings"
)

func main() {
	timestamp := time.Now()
	settings.Initialize()
	log.Info("starting dedupe...")
	files.Scan()
	if len(files.Duplicates) == 0 {
		log.Info("no duplicate files have been found - exiting...")
		os.Exit(0)
	}
	prompts.ListDuplicates()
	var proceed bool
	var deleteDuplicates bool
	if len(settings.MoveDirectory) == 0 && !settings.Delete {
		exit(timestamp, 0)
	}
	if len(settings.MoveDirectory) > 0 && settings.Delete {
		proceed, deleteDuplicates = prompts.DeleteOrMove()
	} else {
		proceed = prompts.HandleDuplicates(settings.Delete)
	}
	if !proceed {
		exit(timestamp, 0)
	}
	counter := 0
	subtimestamp := time.Now()
	if deleteDuplicates {
		log.Info("deleting duplicate files in '" + settings.ComparisonDirectory + "'...")
		for _, file := range files.Duplicates {
			subsubtimestamp := time.Now()
			error := os.Remove(file)
			if error != nil {
				log.Error("encountered an error deleting the file '"+file+"'", error.Error())
				continue
			}
			counter++
			log.DebugTimed("deleted the file '"+file+"'", subsubtimestamp.UnixMilli())
		}
		log.InfoTimed("deleted "+strconv.Itoa(counter)+" duplicate files to '"+settings.MoveDirectory+"'", subtimestamp.UnixMilli())
	} else {
		log.Info("moving duplicate files to '" + settings.MoveDirectory + "'...")
		for _, file := range files.Duplicates {
			if files.MoveFile(file) {
				counter++
			}
		}
		log.InfoTimed("moved "+strconv.Itoa(counter)+" duplicate files to '"+settings.MoveDirectory+"'", subtimestamp.UnixMilli())
	}
	if prompts.DeleteEmptyDirectories(settings.SourceDirectory) {
		files.RemoveEmptyDirectories(settings.SourceDirectory)
	}
	if prompts.DeleteEmptyDirectories(settings.ComparisonDirectory) {
		files.RemoveEmptyDirectories(settings.ComparisonDirectory)
	}
	exit(timestamp, 0)
}

func exit(timestamp time.Time, code int) {
	log.InfoTimed("dedupe finished - exiting...", timestamp.UnixMilli())
	os.Exit(code)
}