From cb4a52e4f245bddf9755434004a4cdb7fffd9f65 Mon Sep 17 00:00:00 2001
From: alfred-mk <alfredmwaik@gmail.com>
Date: Mon, 7 Oct 2024 16:16:57 +0300
Subject: [PATCH] view a selected voucher and verify the PIN

---
 internal/handlers/handlerservice.go      |  1 +
 internal/handlers/ussd/menuhandler.go    | 68 ++++++++++++++++++++++++
 services/registration/my_vouchers.vis    |  3 --
 services/registration/pp.csv             |  2 +-
 services/registration/select_voucher.vis |  6 ++-
 services/registration/view_voucher       |  2 +
 services/registration/view_voucher.vis   | 11 ++++
 services/registration/view_voucher_swa   |  2 +
 services/registration/voucher_set        |  1 +
 services/registration/voucher_set.vis    |  5 ++
 services/registration/voucher_set_swa    |  1 +
 11 files changed, 97 insertions(+), 5 deletions(-)
 create mode 100644 services/registration/view_voucher
 create mode 100644 services/registration/view_voucher.vis
 create mode 100644 services/registration/view_voucher_swa
 create mode 100644 services/registration/voucher_set
 create mode 100644 services/registration/voucher_set.vis
 create mode 100644 services/registration/voucher_set_swa

diff --git a/internal/handlers/handlerservice.go b/internal/handlers/handlerservice.go
index 8f0ff16..4c152b9 100644
--- a/internal/handlers/handlerservice.go
+++ b/internal/handlers/handlerservice.go
@@ -94,6 +94,7 @@ func (ls *LocalHandlerService) GetHandler() (*ussd.Handlers, error) {
 	ls.DbRs.AddLocalFunc("quit_with_help", ussdHandlers.QuitWithHelp)
 	ls.DbRs.AddLocalFunc("check_vouchers", ussdHandlers.CheckVouchers)
 	ls.DbRs.AddLocalFunc("get_vouchers", ussdHandlers.GetVoucherList)
+	ls.DbRs.AddLocalFunc("view_voucher", ussdHandlers.ViewVoucher)
 
 	return ussdHandlers, nil
 }
diff --git a/internal/handlers/ussd/menuhandler.go b/internal/handlers/ussd/menuhandler.go
index 0ff1017..c254401 100644
--- a/internal/handlers/ussd/menuhandler.go
+++ b/internal/handlers/ussd/menuhandler.go
@@ -1053,3 +1053,71 @@ func (h *Handlers) CheckVouchers(ctx context.Context, sym string, input []byte)
 
 	return res, nil
 }
+
+// ViewVoucher retrieves the token holding and balance from the subprefixDB
+func (h *Handlers) ViewVoucher(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	var err error
+	inputStr := string(input)
+
+	if inputStr == "0" || inputStr == "00" {
+		return res, nil
+	}
+
+	flag_incorrect_voucher, _ := h.flagManager.GetFlag("flag_incorrect_voucher")
+
+	// Initialize the store and prefix database
+	store := h.userdataStore
+	prefixdb := storage.NewSubPrefixDb(store, []byte("token_holdings"))
+
+	// Retrieve the voucher symbol list
+	voucherSymbolList, err := prefixdb.Get(ctx, []byte("tokens"))
+	if err != nil {
+		return res, fmt.Errorf("failed to retrieve voucher symbol list: %v", err)
+	}
+
+	// Retrieve the voucher balance list
+	voucherBalanceList, err := prefixdb.Get(ctx, []byte(voucherSymbolList))
+	if err != nil {
+		return res, fmt.Errorf("failed to retrieve voucher balance list: %v", err)
+	}
+
+	// Convert the symbol and balance lists from byte arrays to strings
+	voucherSymbols := string(voucherSymbolList)
+	voucherBalances := string(voucherBalanceList)
+
+	// Split the lists into slices for processing
+	symbols := strings.Split(voucherSymbols, "\n")
+	balances := strings.Split(voucherBalances, "\n")
+
+	var matchedSymbol, matchedBalance string
+
+	for i, symbol := range symbols {
+		symbolParts := strings.SplitN(symbol, ":", 2)
+		if len(symbolParts) != 2 {
+			continue
+		}
+		voucherNum := symbolParts[0]
+		voucherSymbol := symbolParts[1]
+
+		// Check if input matches either the number or the symbol
+		if inputStr == voucherNum || strings.EqualFold(inputStr, voucherSymbol) {
+			matchedSymbol = voucherSymbol
+			// Ensure there's a corresponding balance
+			if i < len(balances) {
+				matchedBalance = strings.SplitN(balances[i], ":", 2)[1] // Extract balance after the "x:balance" format
+			}
+			break
+		}
+	}
+
+	// If a match is found, return the symbol and balance
+	if matchedSymbol != "" && matchedBalance != "" {
+		res.Content = fmt.Sprintf("%s\n%s", matchedSymbol, matchedBalance)
+		res.FlagReset = append(res.FlagReset, flag_incorrect_voucher)
+	} else {
+		res.FlagSet = append(res.FlagSet, flag_incorrect_voucher)
+	}
+
+	return res, nil
+}
diff --git a/services/registration/my_vouchers.vis b/services/registration/my_vouchers.vis
index b70dbfa..9702573 100644
--- a/services/registration/my_vouchers.vis
+++ b/services/registration/my_vouchers.vis
@@ -4,6 +4,3 @@ MOUT back 0
 HALT
 INCMP _ 0
 INCMP select_voucher 1
-
-
-
diff --git a/services/registration/pp.csv b/services/registration/pp.csv
index fd552e4..2a7bb21 100644
--- a/services/registration/pp.csv
+++ b/services/registration/pp.csv
@@ -12,5 +12,5 @@ flag,flag_invalid_amount,18,this is set when the given transaction amount is inv
 flag,flag_incorrect_pin,19,this is set when the provided PIN is invalid or does not match the current account's PIN
 flag,flag_valid_pin,20,this is set when the given PIN is valid
 flag,flag_allow_update,21,this is set to allow a user to update their profile data
-flag,flag_single_edit,22,this is set to allow a user to edit a single profile item such as year of birth
+flag,flag_incorrect_voucher,22,this is set when the selected voucher is invalid
 flag,flag_incorrect_date_format,23,this is set when the given year of birth is invalid
diff --git a/services/registration/select_voucher.vis b/services/registration/select_voucher.vis
index 4fb1d40..50b99ad 100644
--- a/services/registration/select_voucher.vis
+++ b/services/registration/select_voucher.vis
@@ -1,11 +1,15 @@
 LOAD get_vouchers 0
 MAP get_vouchers
 MOUT back 0
-MOUT quit 9
+MOUT quit 00
 MNEXT next 11
 MPREV prev 22
 HALT
+LOAD view_voucher 80
+RELOAD view_voucher
+CATCH . flag_incorrect_voucher 1
 INCMP _ 0
 INCMP quit 9
 INCMP > 11
 INCMP < 22
+INCMP view_voucher *
diff --git a/services/registration/view_voucher b/services/registration/view_voucher
new file mode 100644
index 0000000..3940982
--- /dev/null
+++ b/services/registration/view_voucher
@@ -0,0 +1,2 @@
+Enter PIN to confirm selection:
+{{.view_voucher}}
\ No newline at end of file
diff --git a/services/registration/view_voucher.vis b/services/registration/view_voucher.vis
new file mode 100644
index 0000000..ee8bf85
--- /dev/null
+++ b/services/registration/view_voucher.vis
@@ -0,0 +1,11 @@
+RELOAD view_voucher
+MAP view_voucher
+MOUT back 0
+MOUT quit 9
+LOAD authorize_account 6
+HALT
+RELOAD authorize_account
+CATCH incorrect_pin flag_incorrect_pin 1
+INCMP _ 0
+INCMP quit 9
+INCMP voucher_set *
diff --git a/services/registration/view_voucher_swa b/services/registration/view_voucher_swa
new file mode 100644
index 0000000..485e2ef
--- /dev/null
+++ b/services/registration/view_voucher_swa
@@ -0,0 +1,2 @@
+Weka PIN ili kuthibitisha chaguo:
+{{.view_voucher}}
\ No newline at end of file
diff --git a/services/registration/voucher_set b/services/registration/voucher_set
new file mode 100644
index 0000000..838c1ef
--- /dev/null
+++ b/services/registration/voucher_set
@@ -0,0 +1 @@
+Success! symbol is now your active voucher.
\ No newline at end of file
diff --git a/services/registration/voucher_set.vis b/services/registration/voucher_set.vis
new file mode 100644
index 0000000..832ef22
--- /dev/null
+++ b/services/registration/voucher_set.vis
@@ -0,0 +1,5 @@
+MOUT back 0
+MOUT quit 9
+HALT
+INCMP ^ 0
+INCMP quit 9
diff --git a/services/registration/voucher_set_swa b/services/registration/voucher_set_swa
new file mode 100644
index 0000000..320a315
--- /dev/null
+++ b/services/registration/voucher_set_swa
@@ -0,0 +1 @@
+Hongera! symbol ni Sarafu inayotumika sasa.
\ No newline at end of file