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* @license\n * Copyright 2017 Google LLC\n * SPDX-License-Identifier: BSD-3-Clause\n */\nconst t={ATTRIBUTE:1,CHILD:2,PROPERTY:3,BOOLEAN_ATTRIBUTE:4,EVENT:5,ELEMENT:6},e=t=>(...e)=>({_$litDirective$:t,values:e});class i{constructor(t){}get _$AU(){return this._$AM._$AU}_$AT(t,e,i){this._$Ct=t,this._$AM=e,this._$Ci=i}_$AS(t,e){return this.update(t,e)}update(t,e){return this.render(...e)}}export{i as Directive,t as PartType,e as directive};\n//# sourceMappingURL=directive.js.map\n","import{_$LH as o}from\"./lit-html.js\";\n/**\n * @license\n * Copyright 2020 Google LLC\n * SPDX-License-Identifier: BSD-3-Clause\n */const{I:l}=o,t=o=>null===o||\"object\"!=typeof o&&\"function\"!=typeof o,i={HTML:1,SVG:2},n=(o,l)=>void 0===l?void 0!==(null==o?void 0:o._$litType$):(null==o?void 0:o._$litType$)===l,d=o=>void 0!==(null==o?void 0:o._$litDirective$),v=o=>null==o?void 0:o._$litDirective$,e=o=>void 0===o.strings,c=()=>document.createComment(\"\"),r=(o,t,i)=>{var n;const d=o._$AA.parentNode,v=void 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t,PartType as r}from\"../directive.js\";import{getCommittedValue as l,setChildPartValue as o,insertPart as i,removePart as n,setCommittedValue as f}from\"../directive-helpers.js\";\n/**\n * @license\n * Copyright 2017 Google LLC\n * SPDX-License-Identifier: BSD-3-Clause\n */\nconst u=(e,s,t)=>{const r=new Map;for(let l=s;l<=t;l++)r.set(e[l],l);return r},c=s(class extends t{constructor(e){if(super(e),e.type!==r.CHILD)throw Error(\"repeat() can only be used in text expressions\")}ht(e,s,t){let r;void 0===t?t=s:void 0!==s&&(r=s);const l=[],o=[];let i=0;for(const s of e)l[i]=r?r(s,i):i,o[i]=t(s,i),i++;return{values:o,keys:l}}render(e,s,t){return this.ht(e,s,t).values}update(s,[t,r,c]){var d;const a=l(s),{values:p,keys:v}=this.ht(t,r,c);if(!Array.isArray(a))return this.ut=v,p;const h=null!==(d=this.ut)&&void 0!==d?d:this.ut=[],m=[];let y,x,j=0,k=a.length-1,w=0,A=p.length-1;for(;j<=k&&w<=A;)if(null===a[j])j++;else if(null===a[k])k--;else if(h[j]===v[w])m[w]=o(a[j],p[w]),j++,w++;else 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}\r\n\r\n    getByRandom(take: number): Promise<ChordSheet[]> {\r\n        return this.getBackend().then(b => b.getByRandom(take));\r\n    }\r\n\r\n    getAllArtists(): Promise<string[]> {\r\n        return this.getBackend().then(b => b.getAllArtists());\r\n    }\r\n\r\n    getNew(skip: number, take: number): Promise<PagedResult<ChordSheet>> {\r\n        return this.getBackend().then(b => b.getNew(skip, take));\r\n    }\r\n\r\n    downloadUrlFor(chord: ChordSheet): string {\r\n        if (chord.downloadUrl) {\r\n            return chord.downloadUrl;\r\n        }\r\n\r\n        return `${this.apiUrl}/chords/download?id=${chord.id}`;\r\n    }\r\n\r\n    submitChordEdit(chord: ChordSheet, attachments: File[]): Promise<void> {\r\n        return this.getBackend().then(b => b.submitChordEdit(chord, attachments));\r\n    }\r\n\r\n    getPlainTextChords(): Promise<ChordSheet[]> {\r\n        return this.getBackend().then(b => b.getPlainTextChords());\r\n    }\r\n\r\n    private async getBackend(): Promise<ChordFetchBackend> {\r\n        if (this.backend) {\r\n            return this.backend;\r\n        }\r\n\r\n        const isOnline = onlineDetector.onlineStatus;\r\n        this.backend = isOnline ?\r\n            new ApiBackend() :\r\n            new CacheBackend();\r\n        return this.backend;\r\n    }\r\n}\r\n\r\n/**\r\n * An implementation of ChordFetchBackend that talks to the API. Used when online.\r\n */\r\n class ApiBackend extends ApiServiceBase implements ChordFetchBackend {\r\n\r\n    async getById(chordId: string): Promise<ChordSheet> {\r\n        return super.getJson(\"/chords/get\", { id: chordId });\r\n    }\r\n\r\n    getByOrderedIndex(index: number): Promise<string | null> {\r\n        return super.getString(\"/chords/getByOrderedIndex\", { index: index });\r\n    }\r\n\r\n    search(query: string): Promise<ChordSheet[]> {\r\n        return super.getJson(\"/chords/search\", { search: query });\r\n    }\r\n\r\n    getBySongName(skip: number, take: number): Promise<PagedResult<ChordSheet>> {\r\n        const args = {\r\n            skip,\r\n            take\r\n        };\r\n        return super.getJson(\"/chords/getBySongName\", args);\r\n    }\r\n\r\n    getByArtistName(artist: string | null, skip: number, take: number): Promise<PagedResult<ChordSheet>> {\r\n        const args: any = {\r\n            skip,\r\n            take\r\n        };\r\n        const url = artist ? \"/chords/getArtistSongs\" : \"/chords/getByArtistName\";\r\n        if (artist) {\r\n            args.artist = artist;\r\n        }\r\n        return super.getJson(url, args);\r\n    }\r\n\r\n    getByRandom(take: number): Promise<ChordSheet[]> {\r\n        const args = {\r\n            take\r\n        };\r\n        return super.getJson(\"/chords/getByRandom\", args);\r\n    }\r\n\r\n    getAllArtists(): Promise<string[]> {\r\n        return super.getJson(\"/chords/getAllArtists\");\r\n    }\r\n\r\n    async getNew(skip: number, take: number): Promise<PagedResult<ChordSheet>> {\r\n        const args = {\r\n            skip,\r\n            take\r\n        };\r\n        return super.getJson(\"/chords/getNew\", args);\r\n    }\r\n\r\n    downloadUrlFor(chord: ChordSheet): string {\r\n        if (!chord.chords && chord.downloadUrl) {\r\n            return chord.downloadUrl;\r\n        }\r\n\r\n        return `${this.apiUrl}/chords/download?id=${chord.id}`;\r\n     }\r\n\r\n     submitChordEdit(chord: ChordSheet, attachments: File[]): Promise<void> {\r\n        // Create a new form to hold all the chord props and attachments.\r\n        const formData = new FormData();\r\n        const chordProps = Object.entries(chord);\r\n        for (let [prop,val] of chordProps) {\r\n            if (val !== null && val !== undefined) {\r\n                // Is it an array? Append all array values to the form.\r\n                const arrayVal = Array.isArray(val) ? val as Array<unknown> : null;\r\n                if (arrayVal) {\r\n                    arrayVal.forEach(v => formData.append(prop, `${v}`))\r\n                } else {\r\n                    formData.append(prop, `${val}`);\r\n                }\r\n            }\r\n        }\r\n\r\n        if (attachments.length > 0) {\r\n            attachments.forEach(a => formData.append(\"attachments\", a, a.name));\r\n        }\r\n\r\n        return super.postFormData(\"/chords/submitEdit\", formData);\r\n    }\r\n\r\n    async getPlainTextChords(): Promise<ChordSheet[]> {\r\n        return super.getJson(\"/chords/getPlainTextChords\");\r\n    }\r\n}\r\n\r\n/**\r\n * Implementation of ChordFetchService that loads chords from the local Chord Cache. Intended for use when offline.\r\n */\r\nclass CacheBackend implements ChordFetchBackend {\r\n    private chordCache: ChordCache | null = null;\r\n\r\n    async getById(chordId: string): Promise<ChordSheet> {\r\n        const cache = await this.getChordCache();\r\n        const chord = await cache.get(chordId);\r\n        if (!chord) {\r\n            throw new Error(\"Couldn't find chord in cache\");\r\n        }\r\n\r\n        return chord;\r\n    }\r\n\r\n    getByOrderedIndex(index: number): Promise<string | null> {\r\n        throw new Error(`getByOrderedIndex(${index}) is intended for online use only.`);\r\n    }\r\n\r\n    async search(query: string): Promise<ChordSheet[]> {\r\n        const cache = await this.getChordCache();\r\n        return await cache.search(query);\r\n    }\r\n\r\n    async getBySongName(skip: number, take: number): Promise<PagedResult<ChordSheet>> {\r\n        const cache = await this.getChordCache();\r\n        return await cache.getBySongName(skip, take);\r\n    }\r\n\r\n    async getByArtistName(artist: string | null, skip: number, take: number): Promise<PagedResult<ChordSheet>> {\r\n                const cache = await this.getChordCache();\r\n        return await cache.getByArtistName(artist, skip, take);\r\n    }\r\n\r\n    async getByRandom(take: number): Promise<ChordSheet[]> {\r\n        const cache = await this.getChordCache();\r\n        return await cache.getRandom(take);\r\n    }\r\n\r\n    async getAllArtists(): Promise<string[]> {\r\n        const cache = await this.getChordCache();\r\n        return await cache.getAllArtists();\r\n    }\r\n\r\n    async getNew(skip: number, take: number): Promise<PagedResult<ChordSheet>> {\r\n        const cache = await this.getChordCache();\r\n        return cache.getNew(skip, take);\r\n    }\r\n\r\n    async getChordCache(): Promise<ChordCache> {\r\n        if (!this.chordCache) {\r\n            const module = await import(\"./chord-cache\");\r\n            this.chordCache = new module.ChordCache();\r\n        }\r\n\r\n        return this.chordCache;\r\n    }\r\n\r\n    // @ts-ignore\r\n    submitChordEdit(chord: ChordSheet, attachments: File[]): Promise<void> {\r\n        throw new Error(\"Can't upload chords while offline.\");\r\n    }\r\n\r\n    async getPlainTextChords(): Promise<ChordSheet[]> {\r\n        throw new Error(\"Not supported while offline\");\r\n    }\r\n}"],"file":"code/chord-service.51e80b10.js"}