package main

import (
	//	"fmt"
	"strconv"
	//	"strings"
	//	"sync"

	alpm "github.com/jguer/go-alpm"
	rpc "github.com/mikkeloscar/aur"
	//gopkg "github.com/mikkeloscar/gopkgbuild"
)

type depOrder struct {
	Aur     []*rpc.Pkg
	Repo    []*alpm.Package
	Missing []string
	Runtime stringSet
}

func (do *depOrder) String() string {
	str := ""
	str += "\n" + red("Repo") + " (" + strconv.Itoa(len(do.Repo)) + ") :"
	for _, pkg := range do.Repo {
		if do.Runtime.get(pkg.Name()) {
			str += " " + pkg.Name()
		}
	}

	str += "\n" + red("Aur") + " (" + strconv.Itoa(len(do.Aur)) + ") :"
	for _, pkg := range do.Aur {
		if do.Runtime.get(pkg.Name) {
			str += " " + pkg.Name
		}

	}

	str += "\n" + red("Repo Make") + " (" + strconv.Itoa(len(do.Repo)) + ") :"
	for _, pkg := range do.Repo {
		if !do.Runtime.get(pkg.Name()) {
			str += " " + pkg.Name()
		}
	}

	str += "\n" + red("Aur Make") + " (" + strconv.Itoa(len(do.Aur)) + ") :"
	for _, pkg := range do.Aur {
		if !do.Runtime.get(pkg.Name) {
			str += " " + pkg.Name
		}

	}

	return str
}

func makeDepOrder() *depOrder {
	return &depOrder{
		make([]*rpc.Pkg, 0),
		make([]*alpm.Package, 0),
		make([]string, 0),
		make(stringSet),
	}
}

func getDepOrder(dp *depPool) *depOrder {
	do := makeDepOrder()

	for _, target := range dp.Targets {
		dep := target.DepString()
		aurPkg := dp.findSatisfierAur(dep)
		if aurPkg != nil {
			do.orderPkgAur(aurPkg, dp, true)
		}

		repoPkg := dp.findSatisfierRepo(dep)
		if repoPkg != nil {
			do.orderPkgRepo(repoPkg, dp, true)
		}
	}

	return do
}

func (do *depOrder) orderPkgAur(pkg *rpc.Pkg, dp *depPool, runtime bool) {
	if runtime {
		do.Runtime.set(pkg.Name)
	}
	do.Aur = append(do.Aur, pkg)
	delete(dp.Aur, pkg.Name)

	for _, deps := range [3][]string{pkg.Depends, pkg.MakeDepends, pkg.CheckDepends} {
		for _, dep := range deps {
			aurPkg := dp.findSatisfierAur(dep)
			if aurPkg != nil {
				do.orderPkgAur(aurPkg, dp, runtime)
			}

			repoPkg := dp.findSatisfierRepo(dep)
			if repoPkg != nil {
				do.orderPkgRepo(repoPkg, dp, runtime)
			}

			runtime = false
		}
	}
}

func (do *depOrder) orderPkgRepo(pkg *alpm.Package, dp *depPool, runtime bool) {
	if runtime {
		do.Runtime.set(pkg.Name())
	}
	do.Repo = append(do.Repo, pkg)
	delete(dp.Repo, pkg.Name())

	pkg.Depends().ForEach(func(dep alpm.Depend) (err error) {
		repoPkg := dp.findSatisfierRepo(dep.String())
		if repoPkg != nil {
			do.orderPkgRepo(repoPkg, dp, runtime)
		}

		return nil
	})
}

func (do *depOrder) getMakeOnlyRepo() stringSet {
	makeOnly := make(stringSet)

	for _, pkg := range do.Repo {
		if !do.Runtime.get(pkg.Name()) {
			makeOnly.set(pkg.Name())
		}
	}

	return makeOnly
}

func (do *depOrder) checkMissing() {
}