package parser

import (
	"encoding/xml"
	"fmt"
	"path/filepath"
	"strings"
	"sync"

	"github.com/peterq/pan-light/qt/tool-chain/utils"
	"github.com/sirupsen/logrus"
)

var State = &struct {
	ClassMap   map[string]*Class
	GoClassMap map[string]*Class

	MocImports map[string]struct{}
	Minimal    bool //TODO:
	Target     string
}{
	ClassMap:   make(map[string]*Class),
	GoClassMap: make(map[string]*Class),
	MocImports: make(map[string]struct{}),
}

func LoadModules() {
	libs := GetLibs()
	modules := make([]*Module, len(libs))
	modulesMutex := new(sync.Mutex)
	wg := new(sync.WaitGroup)

	wg.Add(len(GetLibs()))
	for i, m := range libs {
		go func(i int, m string) {
			mod := LoadModule(m)

			modulesMutex.Lock()
			modules[i] = mod
			modulesMutex.Unlock()
			wg.Done()
		}(i, m)
	}
	wg.Wait()

	for _, m := range modules {
		if m != nil {
			m.Prepare()
		}
	}
}

func LoadModule(m string) *Module {
	var (
		logName   = "parser.LoadModule"
		logFields = logrus.Fields{"module": m}
	)
	utils.Log.WithFields(logFields).Debug(logName)

	if m == "Sailfish" {
		return sailfishModule()
	}

	if utils.QT_API_NUM(utils.QT_VERSION()) >= 5120 && m == "QuickControls2" {
		m = "QuickControls"
	}

	module := new(Module)
	var err error
	switch {
	case utils.QT_WEBKIT() && m == "WebKit":
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/5.8.0"), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_MXE():
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API("5.12.0")), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_HOMEBREW():
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API("5.12.0")), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_MACPORTS(), utils.QT_NIX():
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API("5.11.1")), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_MSYS2():
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API("5.12.0")), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_UBPORTS_VERSION() == "xenial":
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API("5.9.0")), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_SAILFISH():
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API("5.6.3")), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_RPI():
		err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API("5.7.0")), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)

	case utils.QT_PKG_CONFIG():
		if utils.QT_API("") != "" {
			err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API(utils.QT_VERSION())), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)
		} else {
			err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(utils.QT_DOC_DIR(), fmt.Sprintf("qt%v", strings.ToLower(m)), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)
		}

	default:
		if utils.QT_API("") != "" {
			err = xml.Unmarshal([]byte(utils.LoadOptional(filepath.Join(strings.TrimSpace(utils.RunCmdOptional(utils.GoList("{{.Dir}}", "github.com/peterq/pan-light/qt/tool-chain/binding/files/docs/"+utils.QT_API(utils.QT_VERSION())), "get doc dir")), fmt.Sprintf("qt%v.index", strings.ToLower(m))))), &module)
		} else {
			path := filepath.Join(utils.QT_DIR(), "Docs", fmt.Sprintf("Qt-%v", utils.QT_VERSION_MAJOR()), fmt.Sprintf("qt%v", strings.ToLower(m)), fmt.Sprintf("qt%v.index", strings.ToLower(m)))
			if !utils.ExistsDir(filepath.Join(utils.QT_DIR(), "Docs", fmt.Sprintf("Qt-%v", utils.QT_VERSION_MAJOR()))) {
				path = filepath.Join(utils.QT_DIR(), "Docs", fmt.Sprintf("Qt-%v", utils.QT_VERSION()), fmt.Sprintf("qt%v", strings.ToLower(m)), fmt.Sprintf("qt%v.index", strings.ToLower(m)))
			}
			err = xml.Unmarshal([]byte(utils.Load(path)), &module)
		}
	}
	if err != nil {
		if m != "DataVisualization" && m != "Charts" {
			utils.Log.WithFields(logFields).WithError(err).Warn(logName)
		} else {
			utils.Log.WithFields(logFields).WithError(err).Debug(logName)
		}
		return nil
	}

	return module
}