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const z = @import( "std" );
const db = @import( "db.zig" );
const req = @import( "req.zig" );
const net = @import( "net-util.zig" );
const zap = @import( "zap" );
const jwt = @import( "jwt" );
const mail = @import( "mail.zig" );
const config = @import( "config.zig" );
const u = struct {
usingnamespace @import( "util.zig" );
usingnamespace @import( "userdefs.zig" );
usingnamespace @import( "user.zig" );
};
const ArenaAllocator = z.heap.ArenaAllocator;
const ErrorRes = net.ErrorResponse;
const Status = zap.StatusCode;
const ArrayList = z.ArrayList;
const OkRes = net.OkResponse;
const Request = zap.Request;
const JWT = jwt.JWT;
const alloc = u.alloc;
const memeql = z.mem.eql;
pub const routes = .{
.@"create-payment-intent" = createPaymentIntent
};
pub const SubLength = enum(u32) {
week = 1,
month = 2,
year = 3,
pub fn getTime( self: SubLength ) i64 {
switch( self ) {
.week => return 7 * 24 * 60 * 60 * 1000,
.month => return 30 * 24 * 60 * 60 * 1000,
.year => return 365 * 24 * 60 * 60 * 1000
}
}
pub fn getCostAmount( self: SubLength ) u32 {
switch( self ) {
.week => return 270,
.month => return 1000,
.year => return 10000
}
}
};
const StripeUrlParams = struct {
amount: u32 = 1000,
currency: []const u8 = "usd",
description: []const u8 = "Axonbox premium subscription",
payment_method: []const u8,
confirm: []const u8 = "true",
uuid: []const u8,
return_url: []const u8
};
const StripeRequestParams = struct {
paymentMethodId: []const u8,
subLength: SubLength = .month,
pub const @"getty.db" = u.@"json.ignore.unknown";
};
const StripeResponse = struct {
status: []const u8,
pub const @"getty.db" = u.@"json.ignore.unknown";
};
///freed by caller
fn formatStripeParams( params: StripeUrlParams ) []const u8 {
const ret = z.fmt.allocPrint( alloc,
"amount={d}¤cy={s}&description={s}&payment_method={s}&confirm={s}&metadata%5Buuid%5D={s}&return_url={s}",
.{
params.amount,
params.currency,
params.description,
params.payment_method,
params.confirm,
params.uuid,
params.return_url
}
) catch return "";
return ret;
}
fn formatReturnUrl( buf: []u8 ) []const u8 {
return z.fmt.bufPrintZ( buf, "{s}/payment-success.html", .{
config.server_url
} ) catch return "";
}
fn getStripeKeyBearer() ![]const u8 {
const file = try u.readFile( "../data/stripe_key.txt" );
defer alloc.free( file );
const buf = try z.fmt.allocPrint( alloc, "Bearer {s}", .{ file } );
return buf;
}
pub fn handleStripeResponse( user: *u.UserEntry, res: StripeResponse, r: zap.Request, length: SubLength ) void {
const status = res.status;
if( memeql( u8, status, "succeeded" ) ) {
user.subscription_data = u.SubData{
.plan = "paid",
.endTime = z.time.milliTimestamp() + length.getTime(),
.reminded = false
};
u.updateEntry( user.* ) catch {
return net.sendJson( r, .internal_server_error, ErrorRes{ .msg = "failed to update user" } );
};
return net.sendJson( r, .ok, OkRes( .{ .msg = "success", .paymentIntent = res } ) );
}
net.sendJson( r, .bad_request, ErrorRes{ .msg = "failed" } );
}
///route @/create-payment-intent
pub fn createPaymentIntent( r: zap.Request ) void {
if( net.handleInvalidPostReq( r ) ) return;
u.checkDbOnThread() catch return;
var token = u.tokenFromPostReq( r ) catch return;
defer token.deinit();
const params = u.jsonParse( StripeRequestParams, r.body.? ) catch {
return net.sendJson( r, .bad_request, ErrorRes{ .msg = "invalid request format" } );
}; defer params.deinit();
var user = u.getEntry( token.claims.uuid ) catch {
return net.sendJson( r, .unauthorized, ErrorRes{ .msg = "user not found" } );
}; defer user.db_entry.?.deinit();
if( !memeql( u8, user.subscription_data.plan, "free" ) ) {
return net.sendJson( r, .bad_request, ErrorRes{ .msg = "user already subscribed" } );
}
const stripe_key = getStripeKeyBearer() catch {
return net.sendJson( r, .internal_server_error, ErrorRes{ .msg = "internal server error" } );
}; defer alloc.free( stripe_key );
const headers = [_]z.http.Header{
.{ .name = "Authorization", .value = stripe_key }
};
var buf: [2048]u8 = undefined;
const body = formatStripeParams( .{
.amount = params.v.subLength.getCostAmount(),
.payment_method = params.v.paymentMethodId,
.uuid = user.uuid,
.return_url = formatReturnUrl( &buf )
} ); defer alloc.free( body );
var res = req.send( .{
.url = "https://api.stripe.com/v1/payment_intents",
.method = .POST,
.headers = &headers,
.body = body
}, alloc );
defer res.deinit();
if( !res.ok ) {
z.debug.print( "failed to create payment intent: {s}\n", .{ res.body.? } );
return net.sendJson( r, .internal_server_error, ErrorRes{ .msg = "failed to create payment intent" } );
}
const stripe_json = u.jsonParse( StripeResponse, res.body.? ) catch {
return net.sendJson( r, .internal_server_error, ErrorRes{ .msg = "failed to parse provider response" } );
}; defer stripe_json.deinit();
handleStripeResponse( &user, stripe_json.v, r, params.v.subLength );
}
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