v2 (#50)

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

src/tag.ts

@@ -0,0 +1,180 @@
+import csvparse from 'csv-parse/lib/sync';
+
+export enum Type {
+  Schedule = 'schedule',
+  Semver = 'semver',
+  Match = 'match',
+  Edge = 'edge',
+  Ref = 'ref',
+  Raw = 'raw',
+  Sha = 'sha'
+}
+
+export enum RefEvent {
+  Branch = 'branch',
+  Tag = 'tag',
+  PR = 'pr'
+}
+
+export interface Tag {
+  type: Type;
+  attrs: Record<string, string>;
+}
+
+export const DefaultPriorities: Record<Type, string> = {
+  [Type.Schedule]: '1000',
+  [Type.Semver]: '900',
+  [Type.Match]: '800',
+  [Type.Edge]: '700',
+  [Type.Ref]: '600',
+  [Type.Raw]: '200',
+  [Type.Sha]: '100'
+};
+
+export function Transform(inputs: string[]): Tag[] {
+  const tags: Tag[] = [];
+  if (inputs.length == 0) {
+    // prettier-ignore
+    inputs = [
+      `type=schedule`,
+      `type=ref,event=${RefEvent.Branch}`,
+      `type=ref,event=${RefEvent.Tag}`,
+      `type=ref,event=${RefEvent.PR}`
+    ];
+  }
+  for (const input of inputs) {
+    tags.push(Parse(input));
+  }
+  return tags.sort((tag1, tag2) => {
+    if (Number(tag1.attrs['priority']) < Number(tag2.attrs['priority'])) {
+      return 1;
+    }
+    if (Number(tag1.attrs['priority']) > Number(tag2.attrs['priority'])) {
+      return -1;
+    }
+    return 0;
+  });
+}
+
+export function Parse(s: string): Tag {
+  const fields = csvparse(s, {
+    relaxColumnCount: true,
+    skipLinesWithEmptyValues: true
+  })[0];
+
+  const tag = {
+    attrs: {}
+  } as Tag;
+
+  for (const field of fields) {
+    const parts = field.toString().split('=', 2);
+    if (parts.length == 1) {
+      tag.attrs['value'] = parts[0].trim();
+    } else {
+      const key = parts[0].trim().toLowerCase();
+      const value = parts[1].trim();
+      switch (key) {
+        case 'type': {
+          if (!Object.values(Type).includes(value)) {
+            throw new Error(`Unknown type attribute: ${value}`);
+          }
+          tag.type = value;
+          break;
+        }
+        default: {
+          tag.attrs[key] = value;
+          break;
+        }
+      }
+    }
+  }
+
+  if (tag.type == undefined) {
+    tag.type = Type.Raw;
+  }
+
+  switch (tag.type) {
+    case Type.Schedule: {
+      if (!tag.attrs.hasOwnProperty('pattern')) {
+        tag.attrs['pattern'] = 'nightly';
+      }
+      break;
+    }
+    case Type.Semver: {
+      if (!tag.attrs.hasOwnProperty('pattern')) {
+        throw new Error(`Missing pattern attribute for ${s}`);
+      }
+      if (!tag.attrs.hasOwnProperty('value')) {
+        tag.attrs['value'] = '';
+      }
+      break;
+    }
+    case Type.Match: {
+      if (!tag.attrs.hasOwnProperty('pattern')) {
+        throw new Error(`Missing pattern attribute for ${s}`);
+      }
+      if (!tag.attrs.hasOwnProperty('group')) {
+        tag.attrs['group'] = '0';
+      }
+      if (isNaN(+tag.attrs['group'])) {
+        throw new Error(`Invalid match group for ${s}`);
+      }
+      if (!tag.attrs.hasOwnProperty('value')) {
+        tag.attrs['value'] = '';
+      }
+      break;
+    }
+    case Type.Edge: {
+      if (!tag.attrs.hasOwnProperty('branch')) {
+        tag.attrs['branch'] = '';
+      }
+      break;
+    }
+    case Type.Ref: {
+      if (!tag.attrs.hasOwnProperty('event')) {
+        throw new Error(`Missing event attribute for ${s}`);
+      }
+      if (
+        !Object.keys(RefEvent)
+          .map(k => RefEvent[k])
+          .includes(tag.attrs['event'])
+      ) {
+        throw new Error(`Invalid event for ${s}`);
+      }
+      if (tag.attrs['event'] == RefEvent.PR && !tag.attrs.hasOwnProperty('prefix')) {
+        tag.attrs['prefix'] = 'pr-';
+      }
+      break;
+    }
+    case Type.Raw: {
+      if (!tag.attrs.hasOwnProperty('value')) {
+        throw new Error(`Missing value attribute for ${s}`);
+      }
+      break;
+    }
+    case Type.Sha: {
+      if (!tag.attrs.hasOwnProperty('prefix')) {
+        tag.attrs['prefix'] = 'sha-';
+      }
+      break;
+    }
+  }
+
+  if (!tag.attrs.hasOwnProperty('enable')) {
+    tag.attrs['enable'] = 'true';
+  }
+  if (!tag.attrs.hasOwnProperty('priority')) {
+    tag.attrs['priority'] = DefaultPriorities[tag.type];
+  }
+  if (!tag.attrs.hasOwnProperty('prefix')) {
+    tag.attrs['prefix'] = '';
+  }
+  if (!tag.attrs.hasOwnProperty('suffix')) {
+    tag.attrs['suffix'] = '';
+  }
+  if (!['true', 'false'].includes(tag.attrs['enable'])) {
+    throw new Error(`Invalid value for enable attribute: ${tag.attrs['enable']}`);
+  }
+
+  return tag;
+}