// This is Free Software under GNU Affero General Public License v >= 3.0
// without warranty, see README.md and license for details.
//
// SPDX-License-Identifier: AGPL-3.0-or-later
// License-Filename: LICENSES/AGPL-3.0.txt
//
// Copyright (C) 2018 by via donau
//   – Österreichische Wasserstraßen-Gesellschaft mbH
// Software engineering by Intevation GmbH
//
// Author(s):
//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>

package imports

import (
	"gemma.intevation.de/gemma/pkg/models"
)

var kindToImportModel = map[JobKind]func() interface{}{
	BNJobKind:   func() interface{} { return new(models.BottleneckImport) },
	GMJobKind:   func() interface{} { return new(models.GaugeMeasurementImport) },
	FAJobKind:   func() interface{} { return new(models.FairwayAvailabilityImport) },
	WXJobKind:   func() interface{} { return new(models.WaterwayAxisImport) },
	WAJobKind:   func() interface{} { return new(models.WaterwayAreaImport) },
	WGJobKind:   func() interface{} { return new(models.WaterwayGaugeImport) },
	DMVJobKind:  func() interface{} { return new(models.DistanceMarksVirtualImport) },
	FDJobKind:   func() interface{} { return new(models.FairwayDimensionImport) },
	DMAJobKind:  func() interface{} { return new(models.DistanceMarksAshoreImport) },
	STJobKind:   func() interface{} { return new(models.StretchImport) },
	SECJobKind:  func() interface{} { return new(models.SectionImport) },
	DSECJobKind: func() interface{} { return new(models.SectionDelete) },
}

// ImportModelForJobKind returns the constructor function to
// de-serialize an incoming JSON REST represention of an import.
func ImportModelForJobKind(kind JobKind) func() interface{} {
	return kindToImportModel[kind]
}

var convertModel = map[JobKind]func(interface{}) interface{}{

	BNJobKind: func(input interface{}) interface{} {
		bi := input.(*models.BottleneckImport)
		return &Bottleneck{
			URL:       bi.URL,
			Tolerance: bi.Tolerance,
			Insecure:  bi.Insecure,
		}
	},

	GMJobKind: func(input interface{}) interface{} {
		gi := input.(*models.GaugeMeasurementImport)
		return &GaugeMeasurement{
			URL:      gi.URL,
			Insecure: gi.Insecure,
		}
	},

	FAJobKind: func(input interface{}) interface{} {
		fai := input.(*models.FairwayAvailabilityImport)
		return &FairwayAvailability{
			URL:      fai.URL,
			Insecure: fai.Insecure,
		}
	},

	WXJobKind: func(input interface{}) interface{} {
		wxi := input.(*models.WaterwayAxisImport)
		return &WaterwayAxis{
			URL:         wxi.URL,
			FeatureType: wxi.FeatureType,
			SortBy:      nilString(wxi.SortBy),
			User:        nilString(wxi.User),
			Password:    nilString(wxi.Password),
		}
	},

	WAJobKind: func(input interface{}) interface{} {
		wai := input.(*models.WaterwayAreaImport)
		return &WaterwayArea{
			URL:         wai.URL,
			FeatureType: wai.FeatureType,
			SortBy:      nilString(wai.SortBy),
			User:        nilString(wai.User),
			Password:    nilString(wai.Password),
		}
	},

	WGJobKind: func(input interface{}) interface{} {
		wgi := input.(*models.WaterwayGaugeImport)
		return &WaterwayGauge{
			URL:      wgi.URL,
			Username: nilString(wgi.User),
			Password: nilString(wgi.Password),
			Insecure: wgi.Insecure,
		}
	},

	DMVJobKind: func(input interface{}) interface{} {
		dmvi := input.(*models.DistanceMarksVirtualImport)
		return &DistanceMarksVirtual{
			URL:      dmvi.URL,
			Username: nilString(dmvi.User),
			Password: nilString(dmvi.Password),
			Insecure: dmvi.Insecure,
		}
	},

	FDJobKind: func(input interface{}) interface{} {
		fdi := input.(*models.FairwayDimensionImport)
		return &FairwayDimension{
			URL:                fdi.URL,
			FeatureType:        fdi.FeatureType,
			SortBy:             nilString(fdi.SortBy),
			LOS:                fdi.LOS,
			MinWidth:           fdi.MinWidth,
			MaxWidth:           fdi.MaxWidth,
			Depth:              fdi.Depth,
			SourceOrganization: fdi.SourceOrganization,
			User:               nilString(fdi.User),
			Password:           nilString(fdi.Password),
		}
	},

	DMAJobKind: func(input interface{}) interface{} {
		dmai := input.(*models.DistanceMarksAshoreImport)
		return &DistanceMarksAshore{
			URL:         dmai.URL,
			FeatureType: dmai.FeatureType,
			SortBy:      nilString(dmai.SortBy),
			User:        nilString(dmai.User),
			Password:    nilString(dmai.Password),
		}
	},

	STJobKind: func(input interface{}) interface{} {
		sti := input.(*models.StretchImport)
		return &Stretch{
			Name:      sti.Name,
			From:      sti.From,
			To:        sti.To,
			Tolerance: sti.Tolerance,
			ObjNam:    sti.ObjNam,
			NObjNam:   sti.NObjNam,
			Source:    sti.Source,
			Date:      sti.Date,
			Countries: sti.Countries,
		}
	},

	SECJobKind: func(input interface{}) interface{} {
		seci := input.(*models.SectionImport)
		return &Section{
			Name:      seci.Name,
			From:      seci.From,
			To:        seci.To,
			Tolerance: seci.Tolerance,
			ObjNam:    seci.ObjNam,
			NObjNam:   seci.NObjNam,
			Source:    seci.Source,
			Date:      seci.Date,
		}
	},

	DSECJobKind: func(input interface{}) interface{} {
		ds := input.(*models.SectionDelete)
		return &DeleteSection{ID: ds.ID}
	},
}

func nilString(s *string) string {
	if s != nil {
		return *s
	}
	return ""
}

// ConvertToInternal converts an external JSON REST represention
// of an import into the internal one store in the import queue.
func ConvertToInternal(kind JobKind, src interface{}) interface{} {
	fn := convertModel[kind]
	if fn == nil {
		return nil
	}
	return fn(src)
}