Rework latest behavior and handle flavor

src/context.ts

@@ -9,6 +9,7 @@ let _tmpDir: string;
 export interface Inputs {
   images: string[];
   tags: string[];
+  flavor: string[];
   labels: string[];
   sepTags: string;
   sepLabels: string;
@@ -26,6 +27,7 @@ export function getInputs(): Inputs {
   return {
     images: getInputList('images'),
     tags: getInputList('tags', true),
+    flavor: getInputList('flavor', true),
     labels: getInputList('labels', true),
     sepTags: core.getInput('sep-tags') || `\n`,
     sepLabels: core.getInput('sep-labels') || `\n`,

src/flavor.ts

@@ -0,0 +1,42 @@
+export interface Flavor {
+  latest: string;
+  prefix: string;
+  suffix: string;
+}
+
+export function Transform(inputs: string[]): Flavor {
+  const flavor: Flavor = {
+    latest: 'auto',
+    prefix: '',
+    suffix: ''
+  };
+
+  for (const input of inputs) {
+    const parts = input.split('=', 2);
+    if (parts.length == 1) {
+      throw new Error(`Invalid entry: ${input}`);
+    }
+    switch (parts[0]) {
+      case 'latest': {
+        flavor.latest = parts[1];
+        if (!['auto', 'true', 'false'].includes(flavor.latest)) {
+          throw new Error(`Invalid latest flavor entry: ${input}`);
+        }
+        break;
+      }
+      case 'prefix': {
+        flavor.prefix = parts[1];
+        break;
+      }
+      case 'suffix': {
+        flavor.suffix = parts[1];
+        break;
+      }
+      default: {
+        throw new Error(`Unknown entry: ${input}`);
+      }
+    }
+  }
+
+  return flavor;
+}

src/meta.ts

@@ -5,6 +5,7 @@ import moment from 'moment';
 import * as semver from 'semver';
 import {Inputs, tmpDir} from './context';
 import * as tcl from './tag';
+import * as fcl from './flavor';
 import * as core from '@actions/core';
 import {Context} from '@actions/github/lib/context';
 import {ReposGetResponseData} from '@octokit/types';
@@ -22,6 +23,7 @@ export class Meta {
   private readonly context: Context;
   private readonly repo: ReposGetResponseData;
   private readonly tags: tcl.Tag[];
+  private readonly flavor: fcl.Flavor;
   private readonly date: Date;
 
   constructor(inputs: Inputs, context: Context, repo: ReposGetResponseData) {
@@ -29,6 +31,7 @@ export class Meta {
     this.context = context;
     this.repo = repo;
     this.tags = tcl.Transform(inputs.tags);
+    this.flavor = fcl.Transform(inputs.flavor);
     this.date = new Date();
     this.version = this.getVersion();
   }
@@ -99,7 +102,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? false : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true';
     }
 
     return version;
@@ -136,7 +139,7 @@ export class Meta {
       latest = true;
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? latest : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true';
     }
 
     return version;
@@ -167,7 +170,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? latest : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true';
     }
 
     return version;
@@ -196,7 +199,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? false : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true';
     }
 
     return version;
@@ -214,7 +217,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? true : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? true : this.flavor.latest == 'true';
     }
 
     return version;
@@ -232,7 +235,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? false : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true';
     }
 
     return version;
@@ -258,7 +261,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? false : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true';
     }
 
     return version;
@@ -272,7 +275,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? false : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true';
     }
 
     return version;
@@ -290,7 +293,7 @@ export class Meta {
       version.partial.push(vraw);
     }
     if (version.latest == undefined) {
-      version.latest = tag.attrs['latest'] == 'auto' ? false : tag.attrs['latest'] == 'true';
+      version.latest = this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true';
     }
 
     return version;
@@ -299,9 +302,13 @@ export class Meta {
   private setFlavor(val: string, tag: tcl.Tag): string {
     if (tag.attrs['prefix'].length > 0) {
       val = `${tag.attrs['prefix']}${val}`;
+    } else if (this.flavor.prefix.length > 0) {
+      val = `${this.flavor.prefix}${val}`;
     }
     if (tag.attrs['suffix'].length > 0) {
       val = `${val}${tag.attrs['suffix']}`;
+    } else if (this.flavor.suffix.length > 0) {
+      val = `${this.flavor.suffix}${val}`;
     }
     return val;
   }

src/tag.ts

@@ -1,27 +1,25 @@
 import csvparse from 'csv-parse/lib/sync';
 
 export enum Type {
-  Raw = 'raw',
   Schedule = 'schedule',
   Semver = 'semver',
   Match = 'match',
   Edge = 'edge',
   Ref = 'ref',
+  Raw = 'raw',
   Sha = 'sha'
 }
 
-export interface Tag {
-  type: Type;
-  attrs: Record<string, string>;
-}
-
 export enum RefEvent {
   Branch = 'branch',
   Tag = 'tag',
   PR = 'pr'
 }
 
-export const RefEvents = Object.keys(RefEvent).map(key => RefEvent[key]);
+export interface Tag {
+  type: Type;
+  attrs: Record<string, string>;
+}
 
 export const DefaultPriorities: Record<Type, string> = {
   [Type.Schedule]: '1000',
@@ -132,7 +130,11 @@ export function Parse(s: string): Tag {
       if (!tag.attrs.hasOwnProperty('event')) {
         throw new Error(`Missing event attribute for ${s}`);
       }
-      if (!RefEvents.includes(tag.attrs['event'])) {
+      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')) {
@@ -160,9 +162,6 @@ export function Parse(s: string): Tag {
   if (!tag.attrs.hasOwnProperty('priority')) {
     tag.attrs['priority'] = DefaultPriorities[tag.type];
   }
-  if (!tag.attrs.hasOwnProperty('latest')) {
-    tag.attrs['latest'] = 'auto';
-  }
   if (!tag.attrs.hasOwnProperty('prefix')) {
     tag.attrs['prefix'] = '';
   }
@@ -172,9 +171,6 @@ export function Parse(s: string): Tag {
   if (!['true', 'false'].includes(tag.attrs['enable'])) {
     throw new Error(`Invalid value for enable attribute: ${tag.attrs['enable']}`);
   }
-  if (!['auto', 'true', 'false'].includes(tag.attrs['latest'])) {
-    throw new Error(`Invalid value for latest attribute: ${tag.attrs['latest']}`);
-  }
 
   return tag;
 }