feat: complete sell

lib/data/repositories/book_instance_repository.dart

@@ -23,4 +23,12 @@ class BookInstanceRepository {
   ) async {
     return await _apiClient.sendBook(book, owner, bal, price);
   }
+
+  Future<Result<void>> sellBooks(List<BookInstance> books) async {
+    Map<String, double?> res = {};
+    for (BookInstance instance in books) {
+      res[instance.id.toString()] = instance.soldPrice;
+    }
+    return await _apiClient.sellBooks(res);
+  }
 }

lib/data/services/api_client.dart

@@ -310,6 +310,31 @@ class ApiClient {
     }
   }
 
+  Future<Result<void>> sellBooks(Map<String, double?> books) async {
+    final client = Client();
+    try {
+      final headers = await _getHeaders({"Content-Type": "application/json"});
+      debugPrint("\n\n\n\nMAP: $books\n\n\n\n");
+      final body = jsonEncode(books);
+      debugPrint("\n\n\n\nSENT: $body\n\n\n\n");
+      final response = await client.post(
+        Uri.parse("https://$apiBasePath/book_instance/sell/bulk"),
+        headers: headers,
+        body: body,
+      );
+      if (response.statusCode == 200) {
+        return Result.ok(response.statusCode);
+      } else {
+        throw "Unknown error";
+      }
+    } catch (e) {
+      debugPrint("\n\n\n\nERROR : ${e.toString()}\n\n\n\n");
+      return Result.error(Exception(e));
+    } finally {
+      client.close();
+    }
+  }
+
   Future<Result<BookInstance>> sendBook(
     Book book,
     Owner owner,

lib/ui/sell_page/view_model/sell_view_model.dart

@@ -50,14 +50,41 @@ class SellViewModel extends ChangeNotifier {
   List<BookStack> get scannedBooks => _scannedBooks;
 
   bool isScanLoaded = false;
+  bool isSendingSell = false;
+  double minimumAmount = 0;
 
   void sellBook(BookStack addedBook) {
+    minimumAmount += addedBook.instance.price;
     _soldBooks.add(addedBook);
     notifyListeners();
   }
 
-  void sendSell() {
+  void sendSell(double givenAmount) async {
+    isSendingSell = true;
+    notifyListeners();
+    List<BookInstance> toSend = [];
+    int nbOfPl = 0;
+    for (BookStack book in _soldBooks) {
+      if (book.instance.price != 0) {
+        book.instance.soldPrice = book.instance.price;
+        givenAmount -= book.instance.price;
+        toSend.add(book.instance);
+      } else {
+        nbOfPl++;
+      }
+    }
+    if (nbOfPl != 0) {
+      double amountPerPl = givenAmount / nbOfPl;
+      for (BookStack book in _soldBooks) {
+        if (book.instance.price == 0) {
+          book.instance.soldPrice = amountPerPl;
+          toSend.add(book.instance);
+        }
+      }
+    }
+    await _bookInstanceRepository.sellBooks(toSend);
     _soldBooks.clear();
+    isSendingSell = false;
     notifyListeners();
   }
 
@@ -75,6 +102,9 @@ class SellViewModel extends ChangeNotifier {
     switch (result) {
       case Ok():
         for (BookInstance instance in result.value) {
+          if (instance.available == false) {
+            continue;
+          }
           if (_soldBooks
               .where((book) => book.instance.id == instance.id)
               .isNotEmpty) {

lib/ui/sell_page/widgets/sell_choice_popup.dart

@@ -25,7 +25,7 @@ class SellChoicePopup extends StatelessWidget {
                 children: [
                   (viewModel.scannedBooks.isEmpty)
                       ? Text(
-                          "Ce livre n'a jamais été rentré, ou vous l'avez déjà mis dans cette vente.",
+                          "Ce livre n'a jamais été rentré, il a déjà été vendu ou vous l'avez déjà mis dans cette vente.",
                         )
                       : SizedBox(),
                   for (BookStack book in viewModel.scannedBooks)

lib/ui/sell_page/widgets/sell_page.dart

@@ -17,6 +17,8 @@ class SellPage extends StatefulWidget {
 }
 
 class _SellPageState extends State<SellPage> {
+  TextEditingController price = TextEditingController();
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -70,12 +72,15 @@ class _SellPageState extends State<SellPage> {
                         ),
                         SizedBox(height: 15),
                         Expanded(
-                          child: ListView(
+                          child: (widget.viewModel.isSendingSell)
+                              ? Center(child: CircularProgressIndicator())
+                              : ListView(
                                   children: [
                                     (widget.viewModel.scannedBooks.isEmpty)
                                         ? Center(child: Text("Aucun"))
                                         : SizedBox(),
-                              for (BookStack book in widget.viewModel.soldBooks)
+                                    for (BookStack book
+                                        in widget.viewModel.soldBooks)
                                       Padding(
                                         padding: const EdgeInsets.symmetric(
                                           horizontal: 15,
@@ -107,15 +112,20 @@ class _SellPageState extends State<SellPage> {
                                 ),
                         ),
                         SizedBox(height: 40),
-                        Text("Montant minimum à payer : 20€"),
+                        Text(
+                          "Montant minimum à payer : ${widget.viewModel.minimumAmount.toString()}€",
+                        ),
                         Padding(
                           padding: const EdgeInsets.symmetric(horizontal: 60.0),
                           child: SizedBox(
                             child: TextField(
+                              controller: price,
                               decoration: InputDecoration(
                                 labelText: "Argent reçu",
+                                hintText:
+                                    "Utilisez un point (.) pour les virgules (,)",
                                 helperText:
-                                    "L'argent reçu sera réparti automatiquement",
+                                    "L'argent reçu sera réparti automatiquement.",
                                 suffixText: "€",
                                 border: OutlineInputBorder(),
                               ),
@@ -129,7 +139,40 @@ class _SellPageState extends State<SellPage> {
                           children: [
                             IconButton(
                               onPressed: () {
-                                widget.viewModel.sendSell();
+                                if (double.tryParse(price.text) == null) {
+                                  ScaffoldMessenger.of(context).showSnackBar(
+                                    SnackBar(
+                                      content: Text(
+                                        "Veuillez indiquer un prix de vente valide",
+                                      ),
+                                      behavior: SnackBarBehavior.floating,
+                                    ),
+                                  );
+                                  return;
+                                } else if (double.parse(price.text) <
+                                    widget.viewModel.minimumAmount) {
+                                  ScaffoldMessenger.of(context).showSnackBar(
+                                    SnackBar(
+                                      content: Text(
+                                        "Le prix de vente est inférieur au montant minimum",
+                                      ),
+                                      behavior: SnackBarBehavior.floating,
+                                    ),
+                                  );
+                                  return;
+                                }
+                                widget.viewModel.sendSell(
+                                  double.parse(price.text),
+                                );
+                                ScaffoldMessenger.of(context).showSnackBar(
+                                  SnackBar(
+                                    content: Text(
+                                      "La vente a bien été enregistrée.",
+                                    ),
+                                    behavior: SnackBarBehavior.floating,
+                                  ),
+                                );
+                                return;
                               },
                               icon: Icon(Icons.check),
                               style: ButtonStyle(