{
  "fieldia": "0.1",
  "id": "invoice",
  "title": "Invoice",
  "description": "A customer invoice: lines, tax and totals worked out as you type, confirmed and then paid.",
  "data": {
    "kind": "record",
    "model": "invoice"
  },
  "maxWidth": "full",
  "look": {
    "theme": "odoo"
  },
  "fields": {
    "name": {
      "type": "char",
      "label": "Number",
      "readonly": true,
      "default": "Draft"
    },
    "state": {
      "type": "selection",
      "label": "Status",
      "options": [
        {
          "value": "draft",
          "label": "Draft"
        },
        {
          "value": "posted",
          "label": "Posted"
        },
        {
          "value": "paid",
          "label": "Paid"
        }
      ],
      "default": "draft"
    },
    "partner_id": {
      "type": "many2one",
      "label": "Customer",
      "relation": "partner",
      "required": true
    },
    "reference": {
      "type": "char",
      "label": "Customer reference"
    },
    "invoice_date": {
      "type": "date",
      "label": "Invoice date"
    },
    "payment_terms": {
      "type": "selection",
      "label": "Payment terms",
      "options": [
        {
          "value": "now",
          "label": "Immediate payment"
        },
        {
          "value": "15",
          "label": "15 days"
        },
        {
          "value": "30",
          "label": "30 days"
        },
        {
          "value": "60",
          "label": "60 days"
        }
      ],
      "default": "30"
    },
    "due_date": {
      "type": "date",
      "label": "Due date"
    },
    "line_ids": {
      "type": "one2many",
      "label": "Invoice lines",
      "relation": "invoice.line",
      "fields": {
        "product_id": {
          "type": "many2one",
          "label": "Product",
          "relation": "product"
        },
        "name": {
          "type": "char",
          "label": "Description"
        },
        "quantity": {
          "type": "float",
          "label": "Quantity",
          "digits": [
            8,
            2
          ],
          "default": 1,
          "min": 0
        },
        "price_unit": {
          "type": "monetary",
          "label": "Unit price",
          "currency": "USD",
          "min": 0
        },
        "discount": {
          "type": "float",
          "label": "Disc. %",
          "digits": [
            5,
            1
          ],
          "min": 0,
          "max": 100,
          "default": 0
        },
        "subtotal": {
          "type": "monetary",
          "label": "Subtotal",
          "currency": "USD",
          "compute": "quantity * price_unit * (1 - discount / 100)"
        }
      }
    },
    "amount_untaxed": {
      "type": "monetary",
      "label": "Untaxed amount",
      "currency": "USD",
      "compute": "sum(line_ids, 'subtotal')"
    },
    "amount_tax": {
      "type": "monetary",
      "label": "Tax 14%",
      "currency": "USD",
      "compute": "round(amount_untaxed * 0.14, 2)"
    },
    "amount_total": {
      "type": "monetary",
      "label": "Total",
      "currency": "USD",
      "compute": "amount_untaxed + amount_tax"
    },
    "notes": {
      "type": "text",
      "label": "Terms and conditions"
    }
  },
  "layout": {
    "type": "sheet",
    "id": "sheet",
    "title": {
      "field": "name",
      "label": "Invoice"
    },
    "statusbar": {
      "field": "state"
    },
    "buttons": [
      {
        "type": "button",
        "id": "b-confirm",
        "label": "Confirm",
        "style": "primary",
        "steps": [
          {
            "do": "set",
            "field": "state",
            "value": "'posted'"
          },
          {
            "do": "save"
          }
        ],
        "invisible": "state != 'draft'"
      },
      {
        "type": "button",
        "id": "b-pay",
        "label": "Register payment",
        "style": "primary",
        "steps": [
          {
            "do": "set",
            "field": "state",
            "value": "'paid'"
          },
          {
            "do": "save"
          }
        ],
        "invisible": "state != 'posted'"
      },
      {
        "type": "button",
        "id": "b-draft",
        "label": "Reset to draft",
        "steps": [
          {
            "do": "set",
            "field": "state",
            "value": "'draft'"
          },
          {
            "do": "save"
          }
        ],
        "invisible": "state != 'posted'"
      }
    ],
    "children": [
      {
        "type": "section",
        "id": "header",
        "columns": {
          "wide": 2,
          "medium": 1
        },
        "children": [
          {
            "type": "field",
            "id": "f-partner",
            "field": "partner_id",
            "readonly": "state != 'draft'"
          },
          {
            "type": "field",
            "id": "f-date",
            "field": "invoice_date",
            "readonly": "state != 'draft'"
          },
          {
            "type": "field",
            "id": "f-reference",
            "field": "reference"
          },
          {
            "type": "field",
            "id": "f-terms",
            "field": "payment_terms"
          },
          {
            "type": "field",
            "id": "f-due",
            "field": "due_date"
          }
        ]
      },
      {
        "type": "field",
        "id": "f-lines",
        "field": "line_ids",
        "readonly": "state != 'draft'"
      },
      {
        "type": "section",
        "id": "foot",
        "columns": {
          "wide": 2,
          "medium": 1
        },
        "children": [
          {
            "type": "field",
            "id": "f-notes",
            "field": "notes",
            "labels": "hidden",
            "placeholder": "Terms and conditions"
          },
          {
            "type": "section",
            "id": "foot-totals",
            "columns": 1,
            "labels": "beside",
            "children": [
              {
                "type": "field",
                "id": "f-untaxed",
                "field": "amount_untaxed"
              },
              {
                "type": "field",
                "id": "f-tax",
                "field": "amount_tax"
              },
              {
                "type": "field",
                "id": "f-total",
                "field": "amount_total"
              }
            ]
          }
        ]
      }
    ]
  }
}