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https://git.sr.ht/~phw/scotty
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b8e6ccffdb
Both export and import progress get updated over a unified channel. Most importantly this allows updating the import total from latest export results.
124 lines
3.9 KiB
Go
124 lines
3.9 KiB
Go
/*
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Copyright © 2023-2025 Philipp Wolfer <phw@uploadedlobster.com>
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This file is part of Scotty.
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Scotty is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later version.
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Scotty is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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Scotty. If not, see <https://www.gnu.org/licenses/>.
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*/
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package backends
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import (
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"go.uploadedlobster.com/scotty/internal/models"
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)
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type ImportProcessor[T models.ListensResult | models.LovesResult] interface {
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ImportBackend() models.ImportBackend
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Process(results chan T, out chan models.ImportResult, progress chan models.TransferProgress)
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Import(export T, result models.ImportResult, out chan models.ImportResult, progress chan models.TransferProgress) (models.ImportResult, error)
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}
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type ListensImportProcessor struct {
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Backend models.ListensImport
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}
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func (p ListensImportProcessor) ImportBackend() models.ImportBackend {
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return p.Backend
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}
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func (p ListensImportProcessor) Process(results chan models.ListensResult, out chan models.ImportResult, progress chan models.TransferProgress) {
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process(p, results, out, progress)
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}
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func (p ListensImportProcessor) Import(export models.ListensResult, result models.ImportResult, out chan models.ImportResult, progress chan models.TransferProgress) (models.ImportResult, error) {
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if export.Error != nil {
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return result, export.Error
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}
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if export.Total > 0 {
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result.TotalCount = export.Total
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} else {
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result.TotalCount += len(export.Items)
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}
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importResult, err := p.Backend.ImportListens(export, result, progress)
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if err != nil {
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return importResult, err
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}
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return importResult, nil
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}
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type LovesImportProcessor struct {
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Backend models.LovesImport
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}
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func (p LovesImportProcessor) ImportBackend() models.ImportBackend {
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return p.Backend
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}
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func (p LovesImportProcessor) Process(results chan models.LovesResult, out chan models.ImportResult, progress chan models.TransferProgress) {
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process(p, results, out, progress)
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}
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func (p LovesImportProcessor) Import(export models.LovesResult, result models.ImportResult, out chan models.ImportResult, progress chan models.TransferProgress) (models.ImportResult, error) {
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if export.Error != nil {
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return result, export.Error
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}
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if export.Total > 0 {
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result.TotalCount = export.Total
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} else {
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result.TotalCount += len(export.Items)
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}
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importResult, err := p.Backend.ImportLoves(export, result, progress)
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if err != nil {
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return importResult, err
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}
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return importResult, nil
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}
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func process[R models.LovesResult | models.ListensResult, P ImportProcessor[R]](processor P, results chan R, out chan models.ImportResult, progress chan models.TransferProgress) {
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defer close(out)
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result := models.ImportResult{}
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p := models.TransferProgress{}
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if err := processor.ImportBackend().StartImport(); err != nil {
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out <- handleError(result, err, progress)
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return
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}
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for exportResult := range results {
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importResult, err := processor.Import(exportResult, result, out, progress)
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result.Update(importResult)
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if err != nil {
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processor.ImportBackend().FinishImport()
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out <- handleError(result, err, progress)
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return
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}
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progress <- p.FromImportResult(result, false)
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}
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if err := processor.ImportBackend().FinishImport(); err != nil {
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out <- handleError(result, err, progress)
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return
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}
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progress <- p.FromImportResult(result, true)
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out <- result
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}
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func handleError(result models.ImportResult, err error, progress chan models.TransferProgress) models.ImportResult {
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result.Error = err
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p := models.TransferProgress{}.FromImportResult(result, false)
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p.Import.Abort()
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progress <- p
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return result
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}
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