#include <stdio.h>
#include <time.h>

#include "ImGuiDatePicker/ImGuiDatePicker.hpp"

#include "strops.hpp"
#include "ui.hpp"
#include "imgui.h"
#include "administration.hpp"
#include "locales.hpp"

static view_state current_view_state = view_state::LIST;
static invoice active_invoice;

void draw_contact_form_ex(contact* buffer, bool viewing_only = false, bool with_autocomplete = false, bool* on_autocomplete = 0);

void ui_setup_invoices()
{
    current_view_state = view_state::LIST;
    active_invoice = administration_create_empty_invoice();
}

void draw_invoice_form(invoice* buffer, bool viewing_only = false)
{
    //float widthAvailable = ImGui::GetContentRegionAvail().x;
    ImGui::BeginDisabled();

    // 1. Identifier
    //ImGui::SetNextItemWidth(widthAvailable*0.2f);
    //ImGui::InputText(localize("contact.form.identifier"), buffer->id, IM_ARRAYSIZE(buffer->id));
    if (!viewing_only) ImGui::EndDisabled();

    // 2. Sequential number
    ImGui::Text("Invoice number: %s", buffer->sequential_number);

    // 3. Supplier (you)
    ImGui::Text("Supplier: %s", buffer->supplier.name);

    ImGui::Separator();

    // 4. Customer information
    ImGui::Text("Customer information");
    bool on_autocomplete;
    draw_contact_form_ex(&buffer->customer, false, true, &on_autocomplete);

    if (on_autocomplete) {
        strops_copy(buffer->customer_id, buffer->customer.id, sizeof(buffer->customer_id));
    }

    ImGui::Separator();

    // 5. Invoice issued at
    ImGui::BeginDisabled();
    tm issued_at_date = *gmtime(&buffer->issued_at);
    if (ImGui::DatePicker("##issuedAt", issued_at_date))
    {
        buffer->issued_at = mktime(&issued_at_date);
    }
    ImGui::SameLine();
    ImGui::Text("Invoice issued at");
    ImGui::EndDisabled();

    // 6. Invoice expires at
    ImGui::BeginDisabled();
    tm expires_at_date = *gmtime(&buffer->expires_at);
    if (ImGui::DatePicker("##expiresAt", expires_at_date))
    {
        buffer->expires_at = mktime(&expires_at_date);
    }
    ImGui::SameLine();
    ImGui::Text("Invoice expires at");
    ImGui::EndDisabled();

    // 7. Product/service delivered at
    tm delivered_at_date = *gmtime(&buffer->delivered_at);
    if (ImGui::DatePicker("##deliveredAt", delivered_at_date))
    {
        buffer->delivered_at = mktime(&delivered_at_date);
    }
    ImGui::SameLine();
    ImGui::Text("Product/service delivered at");

    //ImGui::SetNextItemWidth(widthAvailable*0.5f);
    //ImGui::InputTextWithHint("Invoice number", "Invoice number", buffer->sequential_number, IM_ARRAYSIZE(buffer->sequential_number));
    //ImGui::SameLine();ui_helper_draw_required_tag();
    
    
    if (viewing_only) ImGui::EndDisabled();
}

void draw_invoices_list()
{
    // Table header controls: create button and pagination.
    if (ImGui::Button(localize("form.create")))
    {
        current_view_state = view_state::CREATE;
        active_invoice = administration_create_empty_invoice(); 
        active_invoice.supplier = administration_get_company_info();
        strops_copy(active_invoice.supplier_id, active_invoice.supplier.id, sizeof(active_invoice.supplier_id));
    }
}

void ui_draw_invoices()
{
    switch(current_view_state)
    {
        case view_state::LIST: draw_invoices_list(); break;
        case view_state::CREATE:

            if (ImGui::Button(localize("form.back"))) {
                current_view_state = view_state::LIST;
            }
            draw_invoice_form(&active_invoice);

            //if () {
                //administration_create_invoice(active_invoice);
                //current_view_state = view_state::LIST;
            //} 
            break;
        case view_state::EDIT: break;
        case view_state::VIEW: break;
    }
}