From 06723fec6dfd19eb2357c4bbbb3ae689f3786b6a Mon Sep 17 00:00:00 2001
From: Melvin Valster <melvin.valster@gmail.com>
Date: Sun, 21 Jul 2019 23:11:50 +0200
Subject: [PATCH] Proof of concept for encoding known talents into URL

---
 TODO.md                       |  4 ++-
 src/components/Calculator.tsx | 25 ++++++++++++++++---
 src/components/IndexRoute.tsx |  7 ++++--
 src/lib/tree.ts               | 47 ++++++++++++++++++++++++++++++++++-
 4 files changed, 75 insertions(+), 8 deletions(-)

diff --git a/TODO.md b/TODO.md
index 9180373..05442f3 100644
--- a/TODO.md
+++ b/TODO.md
@@ -4,7 +4,9 @@
 - [ ] Talent tooltips
 - [ ] Generate URL for chosen talents
 - [ ] Responsive on mobile
-- [ ] Pretty ClassPicker
+- [ ] Prettier talent frames
+- [ ] Prettier icon frames & coloring
+- [x] Pretty ClassPicker
 - [x] Add react-router
 - [x] Prevent reducing talent points on a row when it is a dependency for points already spent in the next row
 - [x] Prevent reducing talent points on a talent that is a requirement for another talent with points in it
diff --git a/src/components/Calculator.tsx b/src/components/Calculator.tsx
index cdef45f..c26c8d0 100644
--- a/src/components/Calculator.tsx
+++ b/src/components/Calculator.tsx
@@ -3,16 +3,28 @@ import { Map } from 'immutable'
 import { TalentTree } from './TalentTree'
 import { 
   modifyTalentPoint, 
-  calcAvailablePoints
+  calcAvailablePoints,
+  encodeKnownTalents
 } from '../lib/tree'
 import { talentsBySpec } from '../data/talents'
 import { classByName } from '../data/classes'
+import { History } from 'history'
 
 interface Props {
   selectedClass: string
+  history: History
 }
 
+// const EMPTY_TALENTS = Map<number, number>()
 const EMPTY_TALENTS = Map<number, number>()
+  // .set(30, 5)
+  // .set(26, 5)
+  // .set(34, 5)
+  // .set(28, 2)
+  // .set(27, 3)
+  // .set(33, 1)
+  // .set(29, 1)
+  // .set(32, 1)
 
 export class Calculator extends React.PureComponent<Props> {
   static whyDidYouRender = true
@@ -30,10 +42,15 @@ export class Calculator extends React.PureComponent<Props> {
   }
   
   handleTalentPress = (specId: number, talentId: number, modifier: 1 | -1) => {
+    const { selectedClass } = this.props
     const talent = talentsBySpec[specId][talentId]
-    this.setState({ 
-      knownTalents: modifyTalentPoint(this.state.knownTalents, talent, modifier)
-    })
+    console.log('Clicked talent: ' + talentId)
+
+    const newKnownTalents = modifyTalentPoint(this.state.knownTalents, talent, modifier)
+    this.setState({ knownTalents: newKnownTalents })
+
+    const pointString = encodeKnownTalents(newKnownTalents, selectedClass)
+    this.props.history.replace(`/${selectedClass}/${pointString}`)
   }
 
   render() {
diff --git a/src/components/IndexRoute.tsx b/src/components/IndexRoute.tsx
index 65b2c3d..765aaa7 100644
--- a/src/components/IndexRoute.tsx
+++ b/src/components/IndexRoute.tsx
@@ -15,7 +15,7 @@ export class IndexRoute extends React.PureComponent<Props> {
   static whyDidYouRender = true
 
   render() {
-    const { match } = this.props
+    const { match, history } = this.props
     const { selectedClass, pointString } = match.params
   
     return (
@@ -23,7 +23,10 @@ export class IndexRoute extends React.PureComponent<Props> {
         <ClassPicker selected={selectedClass} />
   
         {selectedClass && 
-          <Calculator selectedClass={selectedClass} />
+          <Calculator 
+            selectedClass={selectedClass} 
+            history={history}
+          />
         }
       </div>
     )
diff --git a/src/lib/tree.ts b/src/lib/tree.ts
index 75b9881..51ab682 100644
--- a/src/lib/tree.ts
+++ b/src/lib/tree.ts
@@ -1,5 +1,10 @@
 import { List, Map, fromJS } from 'immutable'
-import { talentsBySpec, talentToSpec, talentsById } from '../data/talents';
+import { 
+  talentsBySpec, 
+  talentToSpec, 
+  talentsBySpecArray 
+} from '../data/talents';
+import { classByName } from '../data/classes'
 
 export const MAX_POINTS = 51
 export const MAX_ROWS = 7
@@ -128,4 +133,44 @@ export function parsePointString(str: string): List<List<number>> {
   })
 
   return fromJS(list)
+}
+
+/**
+ * Encodes a Map of known talents into a URL-friendly string.
+ */
+export function encodeKnownTalents(known: Map<number, number>, className: string): string {
+  let string = ''
+  const { specs } = classByName[className]
+  for (let i = 0; i < specs.length; i++) {
+    const specId = specs[i]
+    const talents = talentsBySpecArray[specId].sort((a, b) => {
+      if (a.row === b.row) {
+        return a.col - b.col
+      }
+      return a.row - b.row
+    })
+    string += i > 0 ? '-' : ''
+    string += removeTrailingCharacters(
+      talents.map((talent) => known.get(talent.id, 0)).join(''),
+      '0'
+    )
+  }
+  return removeTrailingCharacters(string, '-')
+}
+
+/**
+ * Decodes a string of points into a Map of talents.
+ */
+export function decodeKnownTalents(pointString: string, className: string): Map<number, number> {
+  return Map()
+}
+
+/**
+ * Removes repeated characters from the end of a string.
+ */
+function removeTrailingCharacters(str: string, char: string): string {
+  while (str[str.length - 1] === char) {
+    str = str.slice(0, -1)
+  }
+  return str
 }
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