rluv-zerver/src/routes/budget.zig

const std = @import("std");
const httpz = @import("../.deps/http.zig/src/httpz.zig");
const models = @import("../db/models.zig");
const ztime = @import("../.deps/time.zig");
const utils = @import("../utils.zig");

const handler = @import("../http_handler.zig");

pub fn getBudget(req: *httpz.Request, res: *httpz.Response) !void {
    const db = handler.getDb();

    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    const allocator = gpa.allocator();
    const id_str = req.param("id");
    if (id_str == null) {
        res.status = 400;
        res.body = "Bad Request: No Id";
        return;
    }
    const id = std.fmt.parseInt(u32, id_str.?, 0) catch {
        res.status = 401;
        res.body = "Bad Request: Bad Id";
        return;
    };

    const budget = try db.selectOneById(models.Budget, allocator, id);

    if (budget == null) {
        res.status = 404;
        res.body = "Budget not found";
        return;
    }

    try res.json(budget.?, .{});
}

const BudgetPostReq = struct {
    id: ?u32,
    name: []const u8,
    created_at: ?u64,
    updated_at: ?u64,
    hide: u8,
};

pub fn putBudget(req: *httpz.Request, res: *httpz.Response) !void {
    var db = handler.getDb();
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    const allocator = gpa.allocator();

    const body_data = req.json(models.Budget) catch |err| {
        std.debug.print("Malformed body: {any}\n", .{err});
        handler.returnError("Bad Request: Malformed Body", 400, res);
        return;
    };
    if (body_data == null) {
        handler.returnError("Bad Request: No Data", 400, res);
        return;
    }
    var body = body_data.?;

    // Add Budget
    const now = @intCast(u64, std.time.milliTimestamp());
    // Update existing Budget
    body.updated_at = now;
    try db.updateById(models.Budget, body);

    const query = models.createSelectOnIdQuery(models.Transaction);
    const updated_budget = try db.selectOne(models.Budget, allocator, query, .{ .id = body.id });
    if (updated_budget) |budget| {
        try handler.returnData(budget, res);
    } else {
        handler.returnError("Internal Server Error", 500, res);
    }
    return;
}

pub fn postBudget(req: *httpz.Request, res: *httpz.Response) !void {
    comptime {
        const putReqLen = @typeInfo(BudgetPostReq).Struct.fields.len;
        const budgetLen = @typeInfo(models.Budget).Struct.fields.len;
        if (putReqLen != budgetLen) {
            @compileError(std.fmt.comptimePrint("BudgetPutReq does not equal Budget model struct, fields inconsistent", .{}));
        }
    }

    var db = handler.getDb();
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    const allocator = gpa.allocator();

    const body_data = req.json(BudgetPostReq) catch |err| {
        std.debug.print("Malformed body: {any}\n", .{err});
        handler.returnError("Bad request: Malformed Body", 400, res);
        return;
    };
    if (body_data == null) {
        handler.returnError("Bad request: No Data", 400, res);
        return;
    }
    var body = body_data.?;

    if (body.id != null) {
        handler.returnError("Bad Request: ID", 400, res);
    }
    // Add Budget
    const now = @intCast(u64, std.time.milliTimestamp());
    // Create Budget
    body.created_at = now;
    body.updated_at = now;

    try db.insert(models.Budget, utils.removeStructFields(body, &[_]u8{0}));

    // Get Budget
    const query = try models.createSelectOnFieldQuery(models.Budget, null, "created_at", "=");
    const updated_budget = try db.selectOne(models.Budget, allocator, query, .{ .created_at = body.created_at });
    if (updated_budget) |budget| {
        try handler.returnData(budget, res);
    } else {
        handler.returnError("Internal Server Error", 500, res);
    }
    return;
}

const BudgetCatPostReq = struct {
    id: ?u32,
    budget_id: u32,
    amount: f64,
    name: []const u8,
    color: []const u8,
    created_at: ?u64,
    updated_at: ?u64,
    hide: u8,
};

pub fn postBudgetCategory(req: *httpz.Request, res: *httpz.Response) !void {
    comptime {
        const putReqLen = @typeInfo(BudgetCatPostReq).Struct.fields.len;
        const budgetLen = @typeInfo(models.BudgetCategory).Struct.fields.len;
        if (putReqLen != budgetLen) {
            @compileError(std.fmt.comptimePrint("BudgetCatPutReq does not equal Budget model struct, fields inconsistent", .{}));
        }
    }

    var db = handler.getDb();
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    const allocator = gpa.allocator();

    const body_data = req.json(BudgetCatPostReq) catch |err| {
        std.debug.print("Malformed body: {any}\n", .{err});

        handler.returnError("Bad request: Malformed Body", 400, res);
        return;
    };
    if (body_data == null) {
        handler.returnError("Bad request: No Data", 400, res);
        return;
    }
    var body = body_data.?;

    if (body.id != null) {
        handler.returnError("Bad request: ID", 400, res);
        return;
    }
    // Add Budget
    const now = @intCast(u64, std.time.milliTimestamp());
    // Create Budget
    body.created_at = now;
    body.updated_at = now;

    try db.insert(models.BudgetCategory, utils.removeStructFields(body, &[_]u8{0}));

    // Get Budget
    const query = try models.createSelectOnFieldQuery(models.BudgetCategory, null, "created_at", "=");
    const updated_budget = try db.selectOne(models.BudgetCategory, allocator, query, .{ .created_at = body.created_at });
    if (updated_budget) |budget| {
        try handler.returnData(budget, res);
    } else {
        std.debug.print("Could not find inserted budget", .{});
        handler.returnError("Internal Server Error", 500, res);
    }
    return;
}

pub fn putBudgetCategory(req: *httpz.Request, res: *httpz.Response) !void {
    var db = handler.getDb();
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    const allocator = gpa.allocator();

    const body_data = req.json(models.BudgetCategory) catch |err| {
        std.debug.print("Malformed body: {any}\n", .{err});
        handler.returnError("Bad request: Malformed Body", 400, res);
        return;
    };
    if (body_data == null) {
        handler.returnError("Bad request: No Data", 400, res);
        return;
    }
    var budget_category = body_data.?;

    const now = @intCast(u64, std.time.milliTimestamp());

    // Update existing Budget
    budget_category.updated_at = now;
    try db.updateById(models.BudgetCategory, budget_category);

    const query = models.createSelectOnIdQuery(models.BudgetCategory);
    const updated_budget = try db.selectOne(models.BudgetCategory, allocator, query, .{ .id = budget_category.id });
    if (updated_budget) |budget| {
        try handler.returnData(budget, res);
    } else {
        std.debug.print("Could not find inserted budget", .{});
        handler.returnError("Internal Server Error", 500, res);
    }
    return;
}