invoice.typ

// Variables injected by the generator
#let invoice_number = "{{.Number}}"
#let date_year = {{.DateYear}}
#let date_month = {{.DateMonth}}
#let date_day = {{.DateDay}}
#let payment_terms = "{{.PaymentTerms}}"
#let due_year = {{.DueYear}}
#let due_month = {{.DueMonth}}
#let due_day = {{.DueDay}}
#let client_name = "{{.ClientName}}"
#let client_address = "{{.ClientAddress}}"
#let client_email = "{{.ClientEmail}}"
#let client_extra = "{{.ClientExtra}}"
#let business_name = "{{.BusinessName}}"
#let business_address = "{{.BusinessAddress}}"
#let business_email = "{{.BusinessEmail}}"
#let business_phone = "{{.BusinessPhone}}"
#let business_siret = "{{.BusinessSIRET}}"
#let total = "{{.Total}}".replace("\\$", "$")
#let currency = "{{.Currency}}"
#let lang = "{{.Language}}"
#let account_holder = "{{.AccountHolder}}"
#let account_bic = "{{.AccountBIC}}"
#let account_iban = "{{.AccountIBAN}}"
#let account_number = "{{.AccountNumber}}"
#let routing_number = "{{.RoutingNumber}}"
#let account_type = "{{.AccountType}}"
#let bank_name = "{{.BankName}}"
#let bank_address = "{{.BankAddress}}"
#let reference = "{{.Reference}}"
#let internal_ref = "{{.InternalRef}}"

// Line items (injected)
{{.LineItemsTypst}}

// Design tokens
#let accent = rgb("#0065d8")
#let gray-50 = rgb("#f9fafb")
#let gray-200 = rgb("#e5e7eb")
#let gray-400 = rgb("#9ca3af")
#let gray-500 = rgb("#6b7280")
#let gray-900 = rgb("#111827")

// Document setup
#set page(
  margin: (x: 50pt, y: 50pt),
  footer: align(left)[#text(size: 8pt, fill: gray-400)[Internal reference: #internal_ref]]
)
#set text(font: "Inter", size: 9.5pt, fill: gray-900)
#set par(leading: 0.65em)

// French month names
#let french_months = (
  "janvier", "février", "mars", "avril", "mai", "juin",
  "juillet", "août", "septembre", "octobre", "novembre", "décembre"
)

// Date formatting function
#let format_date(year, month, day, language) = {
  if language == "FR" {
    [#day #french_months.at(month - 1) #year]
  } else {
    let date = datetime(year: year, month: month, day: day)
    date.display("[day] [month repr:long] [year]")
  }
}

// Due date formatting (handles payment terms)
#let format_due_date(terms, year, month, day, language) = {
  if terms == "DUE_ON_RECEIPT" {
    if language == "FR" { "À réception" } else { "Due on receipt" }
  } else {
    format_date(year, month, day, language)
  }
}

// Translations
#let labels = if lang == "FR" {
  (
    invoice: "Facture",
    from: "Émetteur",
    to: "Destinataire",
    date_issued: "Date d'émission",
    date_due: "Date d'échéance",
    invoice_number: "Numéro",
    line_items: "Prestations",
    description: "Description",
    total: "Total",
    siret_prefix: "SIRET",
  )
} else {
  (
    invoice: "Invoice",
    from: "From",
    to: "Bill to",
    date_issued: "Issued",
    date_due: "Due",
    invoice_number: "Number",
    line_items: "Line items",
    description: "Description",
    total: "Total",
    siret_prefix: "SIRET",
  )
}

// PDF metadata
#set document(
  title: labels.invoice + " #" + invoice_number,
  author: business_name,
  keywords: (internal_ref,),
)

// Section label helper (for From/To)
#let section-label(content) = {
  text(size: 9.5pt, fill: gray-400, weight: "semibold")[#content]
}

// Section heading helper (for Line items/Payment details)
#let section-heading(content) = {
  text(size: 14pt, weight: "semibold")[#content]
}

// ============ HEADER ============
#grid(
  columns: (1fr, auto),
  align: (left + horizon, right + horizon),
  [
    #text(size: 28pt, weight: "bold", fill: accent)[#labels.invoice]#text(size: 28pt, weight: "light", fill: gray-400)[\##invoice_number]
  ],
  [
    #set text(size: 9pt)
    #table(
      columns: (auto, auto),
      column-gutter: 10pt,
      stroke: none,
      inset: (x: 0pt, y: 4pt),
      align: (right, left),
      text(fill: gray-500)[#labels.date_due], [*#format_due_date(payment_terms, due_year, due_month, due_day, lang)*],
      text(fill: gray-500)[#labels.date_issued], [#format_date(date_year, date_month, date_day, lang)],
    )
  ]
)

#v(4pt)
#line(length: 100%, stroke: 2.5pt + accent)
#v(24pt)

// ============ FROM / TO ============
#grid(
  columns: (1fr, 1fr),
  gutter: 40pt,
  [
    #section-label(labels.from)
    #v(6pt)
    #text(weight: "semibold")[#business_name.replace(" (EI)", "")]
    #v(2pt)
    #set text(size: 9pt)
    #business_address \
    #business_email \
    #business_phone
    #v(6pt)
    #labels.siret_prefix: #business_siret
  ],
  [
    #section-label(labels.to)
    #v(6pt)
    #text(weight: "semibold")[#client_name]
    #v(2pt)
    #set text(size: 9pt)
    #client_address \
    #client_email
    #if client_extra != "" [
      #v(6pt)
      RNA: #client_extra.replace("Numéro RNA: ", "").replace("RNA: ", "")
    ]
  ]
)

#v(32pt)

// ============ LINE ITEMS ============
#section-label(labels.line_items)
#table(
  columns: (1fr, auto),
  stroke: none,
  inset: (x: 12pt, y: 10pt),
  fill: (_, row) => if row == 0 { gray-50 } else { none },
  table.hline(stroke: 1pt + gray-200),
  [*#labels.description*], align(right)[*#labels.total*],
  table.hline(stroke: 1pt + gray-200),
  ..line_items.map(item => (item.description, align(right, item.total))).flatten(),
  table.hline(stroke: 1pt + gray-200),
)

#v(12pt)

// ============ TOTAL ============
#align(right)[
  #rect(
    fill: rgb("#dbeafe"),
    stroke: 1pt + accent,
    inset: (x: 20pt, y: 12pt),
  )[
    #text(fill: rgb("#1c398e"), size: 10pt)[#labels.total: ]
    #text(fill: rgb("#1c398e"), size: 14pt, weight: "bold")[#total]
  ]
]

// TVA notice for French invoices
#if lang == "FR" [
  #v(4pt)
  #align(right)[
    #text(size: 8pt, fill: gray-500, style: "italic")[TVA non applicable, art. 293 B du CGI]
  ]
]

#v(28pt)

// ============ PAYMENT DETAILS ============
#let payment_labels = if lang == "FR" {
  (
    title: "Informations de paiement",
    holder: "Titulaire",
    bic: "BIC",
    iban: "IBAN",
    account_number: "Numéro de compte",
    routing_number: "Routing",
    bank: "Banque",
    reference: "Référence",
  )
} else {
  (
    title: "Payment details",
    holder: "Account holder",
    bic: "Swift/BIC",
    iban: "IBAN",
    account_number: "Account number",
    routing_number: "Routing number",
    bank: "Bank",
    reference: "Reference",
  )
}

#section-label(payment_labels.title)
#let payment-rows = if account_type == "US_DOMESTIC" {
  (
    ([*#payment_labels.holder*], account_holder),
    ([*#payment_labels.account_number*], text(font: "JetBrains Mono")[#account_number]),
    ([*#payment_labels.routing_number*], text(font: "JetBrains Mono")[#routing_number]),
    ([*#payment_labels.bic*], text(font: "JetBrains Mono")[#account_bic]),
    ([*#payment_labels.bank*], [#bank_name, #bank_address]),
    ([*#payment_labels.reference*], reference),
  )
} else {
  (
    ([*#payment_labels.holder*], account_holder),
    ([*#payment_labels.iban*], text(font: "JetBrains Mono")[#account_iban]),
    ([*#payment_labels.bic*], text(font: "JetBrains Mono")[#account_bic]),
    ([*#payment_labels.bank*], [#bank_name, #bank_address]),
    ([*#payment_labels.reference*], reference),
  )
}

#table(
  columns: (120pt, 1fr),
  stroke: none,
  inset: (x: 12pt, y: 10pt),
  fill: (_, row) => if calc.odd(row) { gray-50 } else { white },
  table.hline(stroke: 1pt + gray-200),
  ..payment-rows.map(row => (
    table.vline(x: 1, stroke: 1pt + gray-200),
    row.at(0),
    row.at(1),
    table.hline(stroke: 1pt + gray-200),
  )).flatten(),
)