ddcにgitmojiソースを入れるぞの巻

asdf plugin-add deno
asdf install deno (asdf list all deno | fzf)
asdf global deno <インスコしたやつ>

# ...
[[plugins]]
repo = 'vim-denops/denops.vim'

# なんとなく入れた
[[plugins]]
repo = 'vim-denops/denops-helloworld.vim'

[[plugins]]
repo = 'Shougo/ddc.vim'
# ...

" ddc.vim

call ddc#custom#patch_global('sources', ['around'])
call ddc#custom#patch_global('sourceOptions', {
      \ '_': {
        \ 'matchers': ['matcher_head'],
        \ 'sorters': ['sorter_rank']
      \ },
      \ 'around': {'mark': 'Ar'}
      \ })

inoremap <silent><expr> <TAB>
\ pumvisible() ? '<C-n>' :
\ (col('.') <= 1 <Bar><Bar> getline('.')[col('.') - 2] =~# '\s') ?
\ '<TAB>' : ddc#map#manual_complete()

call ddc#enable()

import {
  BaseSource,
  Candidate,
} from "https://deno.land/x/ddc_vim@v0.17.0/types.ts";
import {
  assertEquals,
  Denops,
  fn,
} from "https://deno.land/x/ddc_vim@v0.17.0/deps.ts#^";

type Gitmoji = {
  emoji:       string;
  entry:       string;
  code:        string;
  description: string;
  name:        string;
  semver:      string;
}

export type CompleteMetadata = {
  name: string;
  gitmoji: string;
  description: string;
}

function getGitmoji(): CompleteMetadata[] {
  const gitmoji = gitmojiJson.gitmojis.map((data: Gitmoji) => ({name: data.code, gitmoji: data.emoji, description: data.description}));
  return gitmoji;
}

const gitmojiJson = {
  gitmojis: [
    {
      "emoji": "🎨",
      "entity": "🎨",
      "code": ":art:",
      "description": "Improve structure / format of the code.",
      "name": "art",
      "semver": null
    },
    {
      "emoji": "⚡️",
      "entity": "⚡",
      "code": ":zap:",
      "description": "Improve performance.",
      "name": "zap",
      "semver": "patch"
    },
    {
      "emoji": "🔥",
      "entity": "🔥",
      "code": ":fire:",
      "description": "Remove code or files.",
      "name": "fire",
      "semver": null
    },
  ]
};


export class Source extends BaseSource<Record<string, never>> {
  async gatherCandidates(): Promise<Candidate<CompleteMetadata>[]> {
    const candidates = getGitmoji();
    const ddcCandidates = candidates.flatMap(data => {
      return {
        word: data.gitmoji,
        abbr: data.name,
        kind: data.description,
        user_data: {
          name: data.name,
          gitmoji: data.gitmoji,
          description: data.description,
        },
      };
    });
    return Promise.resolve(ddcCandidates);
  }

  params() {
    return {};
  }
}

// ...
const gitmojiJson = JSON.parse(Deno.readTextFileSync('/path/to/gitmoji.json'));
// ...

// @ddc-filters/gitmoji.ts
import { CompletionMetadata } from "../@ddc-sources/emoji.ts";
import { Candidate } from "https://deno.land/x/ddc_vim@v0.17.0/types.ts";
import {
  BaseFilter,
  FilterArguments,
} from "https://deno.land/x/ddc_vim@v0.17.0/base/filter.ts";

export class Filter extends BaseFilter<Record<string, never>> {
  async filter(
    args: FilterArguments<Record<string, never>>
  ): Promise<Candidate[]> {
    return args.candidates.filter(candidate => {
      const meta = candidate.user_data as unknown as CompletionMetadata;
      return meta && meta.name.startsWith(`${args.completeStr}`);
    });
  }

  params() {
    return {};
  }
}

call ddc#custom#patch_global('sources', ['around', 'gitmoji'])

call ddc#custom#patch_global('keywordPattern', '[a-zA-Z_:]\w*')

call ddc#custom#patch_global('sourceOptions', {
      \ '_': {
        \ 'matchers': ['matcher_head'],
        \ 'sorters': ['sorter_rank']
        \ },
      \ })
call ddc#custom#patch_global('sourceOptions', {
      \ 'around': {'mark': 'Ar'},
      \ })
call ddc#custom#patch_global('sourceOptions', {
      \ 'gitmoji': { 
        \ 'mark': 'gitmoji',
        \ 'matchers': ['gitmoji'],
        \ 'sorters': [],
        \ },
      \ })