//! Table Demo - Demonstrates the Table helper for easy table creation
//!
//! Shows how to create formatted tables with headers, data rows,
//! alternating colors, and custom styling.

const std = @import("std");
const pdf = @import("zpdf");

pub fn main() !void {
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    defer _ = gpa.deinit();
    const allocator = gpa.allocator();

    std.debug.print("zpdf - Table Demo\n", .{});

    var doc = pdf.Pdf.init(allocator, .{});
    defer doc.deinit();

    doc.setTitle("Table Demo");
    doc.setAuthor("zpdf");

    var page = try doc.addPage(.{});
    page.setMargins(50, 50, 50);

    // Title
    try page.setFont(.helvetica_bold, 24);
    page.setFillColor(pdf.Color.rgb(41, 98, 255));
    page.setXY(50, 800);
    try page.cell(0, 30, "Table Helper Demo", pdf.Border.none, .center, false);
    page.ln(50);

    // =========================================================================
    // Example 1: Simple Product Table
    // =========================================================================
    try page.setFont(.helvetica_bold, 14);
    page.setFillColor(pdf.Color.black);
    try page.cell(0, 20, "Example 1: Product Inventory", pdf.Border.none, .left, false);
    page.ln(25);

    const col_widths = [_]f32{ 200, 80, 80, 80 };
    var table = pdf.Table.init(page, .{
        .x = 50,
        .y = page.getY(),
        .col_widths = &col_widths,
    });

    // Set column alignments
    table.setColumnAlign(0, .left); // Product name
    table.setColumnAlign(1, .center); // SKU
    table.setColumnAlign(2, .right); // Quantity
    table.setColumnAlign(3, .right); // Price

    try table.header(&.{ "Product", "SKU", "Qty", "Price" });
    try table.row(&.{ "Widget Pro", "WP-001", "150", "$29.99" });
    try table.row(&.{ "Gadget Plus", "GP-042", "75", "$49.99" });
    try table.row(&.{ "Super Tool", "ST-108", "200", "$19.99" });
    try table.row(&.{ "Mega Device", "MD-255", "50", "$99.99" });
    try table.row(&.{ "Mini Helper", "MH-033", "300", "$9.99" });
    try table.footer(&.{ "Total Items", "", "775", "" });

    // =========================================================================
    // Example 2: Invoice-style Table
    // =========================================================================
    page.setXY(50, table.getY() - 40);
    try page.setFont(.helvetica_bold, 14);
    page.setFillColor(pdf.Color.black);
    try page.cell(0, 20, "Example 2: Invoice Items", pdf.Border.none, .left, false);
    page.ln(25);

    const invoice_widths = [_]f32{ 250, 60, 80, 100 };
    var invoice_table = pdf.Table.init(page, .{
        .x = 50,
        .y = page.getY(),
        .col_widths = &invoice_widths,
        .header_bg = pdf.Color.rgb(51, 51, 51),
        .header_fg = pdf.Color.white,
        .odd_row_bg = pdf.Color.rgb(250, 250, 250),
    });

    invoice_table.setColumnAlign(0, .left);
    invoice_table.setColumnAlign(1, .center);
    invoice_table.setColumnAlign(2, .right);
    invoice_table.setColumnAlign(3, .right);

    try invoice_table.header(&.{ "Description", "Qty", "Unit Price", "Total" });
    try invoice_table.row(&.{ "Web Development Services", "40", "$75.00", "$3,000.00" });
    try invoice_table.row(&.{ "UI/UX Design Package", "1", "$1,500.00", "$1,500.00" });
    try invoice_table.row(&.{ "Server Hosting (Annual)", "1", "$480.00", "$480.00" });
    try invoice_table.row(&.{ "SSL Certificate", "1", "$50.00", "$50.00" });
    try invoice_table.row(&.{ "Technical Support (hours)", "10", "$50.00", "$500.00" });

    try invoice_table.separator();
    invoice_table.space(5);

    // Subtotal, Tax, Total using styled rows
    try invoice_table.rowStyled(
        &.{ "", "", "Subtotal:", "$5,530.00" },
        pdf.Color.white,
        pdf.Color.black,
        .helvetica,
        10,
    );
    try invoice_table.rowStyled(
        &.{ "", "", "Tax (8%):", "$442.40" },
        pdf.Color.white,
        pdf.Color.black,
        .helvetica,
        10,
    );
    try invoice_table.rowStyled(
        &.{ "", "", "Total:", "$5,972.40" },
        pdf.Color.rgb(41, 98, 255),
        pdf.Color.white,
        .helvetica_bold,
        11,
    );

    // =========================================================================
    // Example 3: Compact Data Table
    // =========================================================================
    page.setXY(50, invoice_table.getY() - 40);
    try page.setFont(.helvetica_bold, 14);
    page.setFillColor(pdf.Color.black);
    try page.cell(0, 20, "Example 3: Employee Directory", pdf.Border.none, .left, false);
    page.ln(25);

    const emp_widths = [_]f32{ 120, 150, 100, 120 };
    var emp_table = pdf.Table.init(page, .{
        .x = 50,
        .y = page.getY(),
        .col_widths = &emp_widths,
        .header_bg = pdf.Color.rgb(76, 175, 80),
        .body_font_size = 9,
        .header_font_size = 10,
        .padding = 3,
    });

    try emp_table.header(&.{ "Name", "Email", "Department", "Phone" });
    try emp_table.row(&.{ "John Smith", "john@company.com", "Engineering", "+1-555-0101" });
    try emp_table.row(&.{ "Sarah Johnson", "sarah@company.com", "Marketing", "+1-555-0102" });
    try emp_table.row(&.{ "Mike Wilson", "mike@company.com", "Sales", "+1-555-0103" });
    try emp_table.row(&.{ "Emily Davis", "emily@company.com", "HR", "+1-555-0104" });
    try emp_table.row(&.{ "Chris Brown", "chris@company.com", "Finance", "+1-555-0105" });

    // Footer
    page.setXY(50, 50);
    try page.setFont(.helvetica, 9);
    page.setFillColor(pdf.Color.medium_gray);
    try page.cell(0, 15, "Generated with zpdf - Table Helper Demo", pdf.Border.none, .center, false);

    // Save
    const filename = "table_demo.pdf";
    try doc.save(filename);

    std.debug.print("Created: {s}\n", .{filename});
    std.debug.print("Done!\n", .{});
}