import type { Meta, StoryObj } from '@storybook/angular';
import { LetterComposerComponent } from './letter-composer.component';
import { Brief, BriefDecisions, BriefStatus, LibraryPassage } from '@brief/domain/brief';
import { allDiagnostics } from '@brief/domain/brief';
import { OrgTemplate } from '@brief/domain/org-template';
import { BlockDiffKind } from '@brief/domain/brief-diff';

const orgTemplate: OrgTemplate = {
  subOrgId: 'cibg-registers',
  orgName: 'CIBG — Registers',
  returnAddress: 'BIG-register\nPostbus 00000\n2500 AA Den Haag',
  footerContact: 'www.bigregister.nl\ninfo@voorbeeld.example',
  footerLegal: 'Ons kenmerk vermelden bij correspondentie.',
  signatureName: 'A. de Vries',
  signatureRole: 'Hoofd Registratie',
  signatureClosing: 'Met vriendelijke groet,',
  margins: { topMm: 25, rightMm: 25, bottomMm: 25, leftMm: 25 },
  version: 1,
};

const passages: LibraryPassage[] = [
  {
    passageId: 'p1',
    scope: 'global',
    sectionKey: 'aanhef',
    label: 'Standaard aanhef',
    version: 1,
    content: {
      paragraphs: [
        {
          nodes: [
            { type: 'text', text: 'Geachte heer/mevrouw ' },
            { type: 'placeholder', key: 'naam_zorgverlener' },
            { type: 'text', text: ',' },
          ],
        },
      ],
    },
  },
  {
    passageId: 'p2',
    scope: 'beroep',
    beroep: 'arts',
    sectionKey: 'kern',
    label: 'Toelichting arts',
    version: 1,
    content: { paragraphs: [{ nodes: [{ type: 'text', text: 'Als arts ...' }] }] },
  },
];

function brief(status: BriefStatus): Brief {
  return {
    briefId: 'b1',
    beroep: 'arts',
    templateId: 't1',
    drafterId: 'demo-drafter',
    status,
    placeholders: [
      { key: 'naam_zorgverlener', label: 'Naam zorgverlener', autoResolvable: true },
      { key: 'reden_besluit', label: 'Reden besluit', autoResolvable: false },
    ],
    sections: [
      {
        sectionKey: 'aanhef',
        title: 'Aanhef',
        required: true,
        locked: true,
        blocks: [
          {
            type: 'passage',
            blockId: 'local-1',
            sourcePassageId: 'p1',
            sourceVersion: 1,
            edited: false,
            content: passages[0].content,
          },
        ],
      },
      {
        sectionKey: 'kern',
        title: 'Kern van het besluit',
        required: true,
        locked: false,
        blocks: [
          {
            type: 'freeText',
            blockId: 'local-2',
            content: {
              paragraphs: [
                {
                  nodes: [
                    { type: 'text', text: 'Wij hebben besloten om reden ' },
                    { type: 'placeholder', key: 'reden_besluit' },
                    { type: 'text', text: '.' },
                  ],
                },
              ],
            },
          },
        ],
      },
      {
        sectionKey: 'slot',
        title: 'Slot',
        required: false,
        locked: true,
        blocks: [
          {
            type: 'freeText',
            blockId: 'local-3',
            content: {
              paragraphs: [{ nodes: [{ type: 'text', text: 'Met vriendelijke groet,' }] }],
            },
          },
        ],
      },
    ],
  };
}

const render = (
  b: Brief,
  decisions: BriefDecisions,
  extra: {
    blockDiffs?: ReadonlyMap<string, BlockDiffKind>;
    removedCount?: number;
    logoUrl?: string | null;
  } = {},
) => ({
  props: {
    brief: b,
    orgTemplate,
    diagnostics: allDiagnostics(b),
    ...decisions,
    busy: false,
    blockDiffs: extra.blockDiffs ?? new Map<string, BlockDiffKind>(),
    removedCount: extra.removedCount ?? 0,
    logoUrl: extra.logoUrl ?? null,
  },
  template: `<app-letter-composer [brief]="brief" [orgTemplate]="orgTemplate" [logoUrl]="logoUrl"
    [diagnostics]="diagnostics" [canApprove]="canApprove" [canReject]="canReject"
    [canSend]="canSend" [busy]="busy" [blockDiffs]="blockDiffs"
    [removedCount]="removedCount"></app-letter-composer>`,
});

const meta: Meta<LetterComposerComponent> = {
  title: 'Domein/Brief/Letter Composer',
  component: LetterComposerComponent,
};
export default meta;
type Story = StoryObj<LetterComposerComponent>;

export const SubmittedApprover: Story = {
  render: () =>
    render(brief({ tag: 'submitted', submittedBy: 'demo-drafter', submittedAt: '2026-07-01' }), {
      canEdit: false,
      canApprove: true,
      canReject: true,
      canSend: false,
      canRevealBigNummer: false,
    }),
};
export const ApprovedSender: Story = {
  render: () =>
    render(brief({ tag: 'approved', approvedBy: 'demo-approver', approvedAt: '2026-07-01' }), {
      canEdit: false,
      canApprove: false,
      canReject: false,
      canSend: true,
      canRevealBigNummer: false,
    }),
};
export const Sent: Story = {
  render: () =>
    render(brief({ tag: 'sent', sentAt: '2026-07-01' }), {
      canEdit: false,
      canApprove: false,
      canReject: false,
      canSend: false,
      canRevealBigNummer: false,
    }),
};

/** Approver's "Toon wijzigingen": a resubmitted letter with blocks changed,
    added and removed since the last rejection. */
export const RejectionDiff: Story = {
  render: () =>
    render(
      brief({
        tag: 'submitted',
        submittedBy: 'demo-drafter',
        submittedAt: '2026-07-02',
      }),
      {
        canEdit: false,
        canApprove: true,
        canReject: true,
        canSend: false,
        canRevealBigNummer: false,
      },
      {
        blockDiffs: new Map<string, BlockDiffKind>([
          ['local-2', 'changed'],
          ['local-3', 'added'],
        ]),
        removedCount: 1,
      },
    ),
};

/** A pure viewer (e.g. admin) has no approve/reject/send capability on this letter —
    the read-only notice, not a broken-looking editor. */
export const AlleenLezen: Story = {
  render: () =>
    render(brief({ tag: 'submitted', submittedBy: 'demo-drafter', submittedAt: '2026-07-01' }), {
      canEdit: false,
      canApprove: false,
      canReject: false,
      canSend: false,
      canRevealBigNummer: false,
    }),
};