import React from 'react';
import lbry from '../lbry.js';
import uri from '../uri.js';
import FormField from '../component/form.js';
import {Link} from '../component/link.js';
import Modal from '../component/modal.js';

var PublishPage = React.createClass({
  _requiredFields: ['name', 'bid', 'meta_title', 'meta_author', 'meta_license', 'meta_description'],

  _updateChannelList: function(channel) {
    // Calls API to update displayed list of channels. If a channel name is provided, will select
    // that channel at the same time (used immediately after creating a channel)
    lbry.channel_list_mine().then((channels) => {
      this.setState({
        channels: channels,
        ... channel ? {channel} : {}
      });
    });
  },
  handleSubmit: function(event) {
    if (typeof event !== 'undefined') {
      event.preventDefault();
    }

    this.setState({
      submitting: true,
    });

    var checkFields = this._requiredFields.slice();
    if (!this.state.myClaimExists) {
      checkFields.push('file');
    }

    var missingFieldFound = false;
    for (let fieldName of checkFields) {
      var field = this.refs[fieldName];
      if (field.getValue() === '') {
        field.warnRequired();
        if (!missingFieldFound) {
          field.focus();
          missingFieldFound = true;
        }
      }
    }

    if (missingFieldFound) {
      this.setState({
        submitting: false,
      });
      return;
    }

    if (this.state.nameIsMine) {
      // Pre-populate with existing metadata
      var metadata = Object.assign({}, this.state.myClaimMetadata);
      if (this.refs.file.getValue() !== '') {
        delete metadata.sources;
      }
    } else {
      var metadata = {};
    }

    for (let metaField of ['title', 'author', 'description', 'thumbnail', 'license', 'license_url', 'language', 'nsfw']) {
      var value = this.refs['meta_' + metaField].getValue();
      if (value !== '') {
        metadata[metaField] = value;
      }
    }

    var licenseUrl = this.refs.meta_license_url.getValue();
    if (licenseUrl) {
      metadata.license_url = licenseUrl;
    }

    var doPublish = () => {
      var publishArgs = {
        name: this.state.name,
        bid: parseFloat(this.state.bid),
        metadata: metadata,
        ... this.state.channel != 'new' && this.state.channel != 'anonymous' ? {channel_name: this.state.channel} : {},
      };

      if (this.refs.file.getValue() !== '') {
	publishArgs.file_path = this.refs.file.getValue();
      }
      
      lbry.publish(publishArgs, (message) => {
        this.handlePublishStarted();
      }, null, (error) => {
        this.handlePublishError(error);
      });
    };

    if (this.state.isFee) {
      lbry.getUnusedAddress((address) => {
        metadata.fee = {};
        metadata.fee[this.state.feeCurrency] = {
          amount: parseFloat(this.state.feeAmount),
          address: address,
        };

        doPublish();
      });
    } else {
      doPublish();
    }
  },
  getInitialState: function() {
    return {
      channels: null,
      rawName: '',
      name: '',
      bid: '',
      feeAmount: '',
      feeCurrency: 'USD',
      channel: 'anonymous',
      newChannelName: '@',
      newChannelBid: '',
      nameResolved: false,
      topClaimValue: 0.0,
      myClaimValue: 0.0,
      myClaimMetadata: null,
      myClaimExists: null,
      copyrightNotice: '',
      otherLicenseDescription: '',
      otherLicenseUrl: '',
      uploadProgress: 0.0,
      uploaded: false,
      errorMessage: null,
      submitting: false,
      creatingChannel: false,
      modal: null,
    };
  },
  handlePublishStarted: function() {
    this.setState({
      modal: 'publishStarted',
    });
  },
  handlePublishStartedConfirmed: function() {
    window.location = "?published";
  },
  handlePublishError: function(error) {
    this.setState({
      submitting: false,
      modal: 'error',
      errorMessage: error.message,
    });
  },
  handleNameChange: function(event) {
    var rawName = event.target.value;

    if (!rawName) {
      this.setState({
        rawName: '',
        name: '',
        nameResolved: false,
      });

      return;
    }

    if (!lbry.nameIsValid(rawName, false)) {
      this.refs.name.showAdvice('LBRY names must contain only letters, numbers and dashes.');
      return;
    }

    this.setState({
      rawName: rawName,
    });

    const name = rawName.toLowerCase();
    lbry.getMyClaim(name, (myClaimInfo) => {
      if (name != this.refs.name.getValue().toLowerCase()) {
        // A new name has been typed already, so bail
        return;
      }
      lbry.resolve({uri: name}).then((claimInfo) => {
        if (name != this.refs.name.getValue()) {
          return;
        }

        if (!claimInfo) {
          this.setState({
            name: name,
            nameResolved: false,
            myClaimExists: false,
          });
        } else {
          const topClaimIsMine = (myClaimInfo && myClaimInfo.claim.amount >= claimInfo.claim.amount);
          const newState = {
            name: name,
            nameResolved: true,
            topClaimValue: parseFloat(claimInfo.claim.amount),
            myClaimExists: !!myClaimInfo,
            myClaimValue: myClaimInfo ? parseFloat(myClaimInfo.claim.amount) : null,
            myClaimMetadata: myClaimInfo ? myClaimInfo.value : null,
            topClaimIsMine: topClaimIsMine,
          };

          if (topClaimIsMine) {
            newState.bid = myClaimInfo.claim.amount;
          } else if (this.state.myClaimMetadata) {
            // Just changed away from a name we have a claim on, so clear pre-fill
            newState.bid = '';
          }

          this.setState(newState);
        }
      }, () => { // Assume an error means the name is available
        this.setState({
          name: name,
          nameResolved: false,
          myClaimExists: false,
        });
      });
    });
  },
  handleBidChange: function(event) {
    this.setState({
      bid: event.target.value,
    });
  },
  handleFeeAmountChange: function(event) {
    this.setState({
      feeAmount: event.target.value,
    });
  },
  handleFeeCurrencyChange: function(event) {
    this.setState({
      feeCurrency: event.target.value,
    });
  },
  handleFeePrefChange: function(feeEnabled) {
    this.setState({
      isFee: feeEnabled
    });
  },
  handeLicenseChange: function(event) {
    var licenseType = event.target.options[event.target.selectedIndex].getAttribute('data-license-type');
    var newState = {
      copyrightChosen: licenseType == 'copyright',
      otherLicenseChosen: licenseType == 'other',
    };

    if (licenseType == 'copyright') {
      var author = this.refs.meta_author.getValue();
      newState.copyrightNotice = 'Copyright ' + (new Date().getFullYear()) + (author ? ' ' + author : '');
    }

    this.setState(newState);
  },
  handleCopyrightNoticeChange: function(event) {
    this.setState({
      copyrightNotice: event.target.value,
    });
  },
  handleOtherLicenseDescriptionChange: function(event) {
    this.setState({
      otherLicenseDescription: event.target.value,
    });
  },
  handleOtherLicenseUrlChange: function(event) {
    this.setState({
      otherLicenseUrl: event.target.value,
    });
  },
  handleChannelChange: function (event) {
    const channel = event.target.value;

    this.setState({
      channel: channel,
    });
  },
  handleNewChannelNameChange: function (event) {
    const newChannelName = (event.target.value.startsWith('@') ? event.target.value : '@' + event.target.value);

    if (newChannelName.length > 1 && !lbry.nameIsValid(newChannelName.substr(1), false)) {
      this.refs.newChannelName.showAdvice('LBRY channel names must contain only letters, numbers and dashes.');
      return;
    }

    this.setState({
      newChannelName: newChannelName,
    });
  },
  handleNewChannelBidChange: function (event) {
    this.setState({
      newChannelBid: event.target.value,
    });
  },
  handleCreateChannelClick: function (event) {
    if (this.state.newChannelName.length < 5) {
      this.refs.newChannelName.showAdvice('LBRY channel names must be at least 4 characters in length.');
      return;
    }

    this.setState({
      creatingChannel: true,
    });

    const newChannelName = this.state.newChannelName;
    lbry.channel_new({channel_name: newChannelName, amount: parseInt(this.state.newChannelBid)}).then(() => {
      setTimeout(() => {
        this.setState({
          creatingChannel: false,
        });

        this._updateChannelList(newChannelName);
      }, 5000);
    }, (error) => {
      // TODO: better error handling
      this.refs.newChannelName.showAdvice('Unable to create channel due to an internal error.');
      this.setState({
        creatingChannel: false,
      });
    });
  },
  getLicenseUrl: function() {
    if (!this.refs.meta_license) {
      return '';
    } else if (this.state.otherLicenseChosen) {
      return this.state.otherLicenseUrl;
    } else {
      return this.refs.meta_license.getSelectedElement().getAttribute('data-url') || '' ;
    }
  },
  componentWillMount: function() {
    this._updateChannelList();
  },
  componentDidMount: function() {
    document.title = "Publish";
  },
  componentDidUpdate: function() {
  },
  // Also getting a type warning here too
  render: function() {
    if (this.state.channels === null) {
      return null;
    }

    return (
      <main ref="page">
        <form onSubmit={this.handleSubmit}>
          <section className="card">
            <h4>LBRY Name</h4>
            <div className="form-row">
              <FormField type="text" ref="name" value={this.state.rawName} onChange={this.handleNameChange} />
              {
                (!this.state.name
                  ? null
                  : (!this.state.nameResolved
                      ? <em> The name <strong>{this.state.name}</strong> is available.</em>
                      : (this.state.myClaimExists
                        ? <em> You already have a claim on the name <strong>{this.state.name}</strong>. You can use this page to update your claim.</em>
                        : <em> The name <strong>{this.state.name}</strong> is currently claimed for <strong>{this.state.topClaimValue}</strong> {this.state.topClaimValue == 1 ? 'credit' : 'credits'}.</em>)))
              }
              <div className="help">What LBRY name would you like to claim for this file?</div>
            </div>
          </section>

          <section className="card">
            <h4>Channel</h4>
            <div className="form-row">
              <FormField type="select" onChange={this.handleChannelChange} value={this.state.channel}>
                <option key="anonymous" value="anonymous">Anonymous</option>
                {this.state.channels.map(({name}) => <option key={name} value={name}>{name}</option>)}
                <option key="new" value="new">New channel...</option>
              </FormField>
              {this.state.channel == 'new'
                ? <section>
                    <label>Name <FormField type="text" onChange={this.handleNewChannelNameChange} ref={newChannelName => { this.refs.newChannelName = newChannelName }}
                                                   value={this.state.newChannelName} /></label>
                    <label>Bid amount <FormField type="text-number" onChange={this.handleNewChannelBidChange} value={this.state.newChannelBid} /> LBC</label>
                    <Link button="primary" label={!this.state.creatingChannel ? 'Create channel' : 'Creating channel...'} onClick={this.handleCreateChannelClick} disabled={this.state.creatingChannel} />
                  </section>
                : null}
              <div className="help">What channel would you like to publish this file under?</div>
            </div>
          </section>

          <section className="card">
            <h4>Choose File</h4>
            <FormField name="file" ref="file" type="file" />
            { this.state.myClaimExists ? <div className="help">If you don't choose a file, the file from your existing claim will be used.</div> : null }
          </section>

          <section className="card">
            <h4>Bid Amount</h4>
            <div className="form-row">
              Credits <FormField ref="bid" type="text-number" onChange={this.handleBidChange} value={this.state.bid} placeholder={this.state.nameResolved ? this.state.topClaimValue + 10 : 100} />
              <div className="help">How much would you like to bid for this name?
              { !this.state.nameResolved ? <span> Since this name is not currently resolved, you may bid as low as you want, but higher bids help prevent others from claiming your name.</span>
                                         : (this.state.topClaimIsMine ? <span> You currently control this name with a bid of <strong>{this.state.myClaimValue}</strong> {this.state.myClaimValue == 1 ? 'credit' : 'credits'}.</span>
                                                                      : (this.state.myClaimExists ? <span> You have a non-winning bid on this name for <strong>{this.state.myClaimValue}</strong> {this.state.myClaimValue == 1 ? 'credit' : 'credits'}.
                                                                                                           To control this name, you'll need to increase your bid to more than <strong>{this.state.topClaimValue}</strong> {this.state.topClaimValue == 1 ? 'credit' : 'credits'}.</span>
                                                                                                  : <span> You must bid over <strong>{this.state.topClaimValue}</strong> {this.state.topClaimValue == 1 ? 'credit' : 'credits'} to claim this name.</span>)) }
              </div>
            </div>
          </section>

          <section className="card">
            <h4>Fee</h4>
            <div className="form-row">
              <label>
               <FormField type="radio" onChange={ () => { this.handleFeePrefChange(false) } } checked={!this.state.isFee} /> No fee
              </label>
              <label>
               <FormField type="radio" onChange={ () => { this.handleFeePrefChange(true) } } checked={this.state.isFee} /> { !this.state.isFee ? 'Choose fee...' : 'Fee ' }
               <span className={!this.state.isFee ? 'hidden' : ''}>
                 <FormField type="text-number" onChange={this.handleFeeAmountChange} /> <FormField type="select" onChange={this.handleFeeCurrencyChange}>
                   <option value="USD">US Dollars</option>
                   <option value="LBC">LBRY credits</option>
                 </FormField>
                 </span>
              </label>
              <div className="help">
                <p>How much would you like to charge for this file?</p>
                If you choose to price this content in dollars, the number of credits charged will be adjusted based on the value of LBRY credits at the time of purchase.
              </div>
            </div>
          </section>


          <section className="card">
            <h4>Your Content</h4>

            <div className="form-row">
              <label htmlFor="title">Title</label><FormField type="text" ref="meta_title" name="title" placeholder="My Show, Episode 1" />
            </div>
            <div className="form-row">
              <label htmlFor="author">Author</label><FormField type="text" ref="meta_author" name="author" placeholder="My Company, Inc." />
            </div>
            <div className="form-row">
            <label htmlFor="license">License</label><FormField type="select" ref="meta_license" name="license" onChange={this.handeLicenseChange}>
              <option data-url="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</option>
              <option data-url="https://creativecommons.org/licenses/by-sa/4.0/legalcode">Creative Commons Attribution-ShareAlike 4.0 International</option>
              <option data-url="https://creativecommons.org/licenses/by-nd/4.0/legalcode">Creative Commons Attribution-NoDerivatives 4.0 International</option>
              <option data-url="https://creativecommons.org/licenses/by-nc/4.0/legalcode">Creative Commons Attribution-NonCommercial 4.0 International</option>
              <option data-url="https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International</option>
              <option data-url="https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode">Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International</option>
              <option>Public Domain</option>
              <option data-license-type="copyright" {... this.state.copyrightChosen ? {value: this.state.copyrightNotice} : {}}>Copyrighted...</option>
              <option data-license-type="other" {... this.state.otherLicenseChosen ? {value: this.state.otherLicenseDescription} : {}}>Other...</option>
            </FormField>
            <FormField type="hidden" ref="meta_license_url" name="license_url" value={this.getLicenseUrl()} />
            </div>
            {this.state.copyrightChosen
              ? <div className="form-row">
                  <label htmlFor="copyright-notice" value={this.state.copyrightNotice}>Copyright notice</label><FormField type="text" name="copyright-notice" value={this.state.copyrightNotice} onChange={this.handleCopyrightNoticeChange} />
                </div>
              : null}
            {this.state.otherLicenseChosen
              ? <div className="form-row">
                  <label htmlFor="other-license-description">License description</label><FormField type="text" name="other-license-description" onChange={this.handleOtherLicenseDescriptionChange} />
                </div>
              : null}
            {this.state.otherLicenseChosen
              ? <div className="form-row">
                  <label htmlFor="other-license-url">License URL</label> <FormField type="text" name="other-license-url" onChange={this.handleOtherLicenseUrlChange} />
                </div>
              : null}

            <div className="form-row">
            <label htmlFor="language">Language</label> <FormField type="select" defaultValue="en" ref="meta_language" name="language">
                 <option value="en">English</option>
                 <option value="zh">Chinese</option>
                 <option value="fr">French</option>
                 <option value="de">German</option>
                 <option value="jp">Japanese</option>
                 <option value="ru">Russian</option>
                 <option value="es">Spanish</option>
              </FormField>
            </div>
            <div className="form-row">
              <label htmlFor="description">Description</label> <FormField type="textarea" ref="meta_description" name="description" placeholder="Description of your content" />
            </div>
            <div className="form-row">
              <label><FormField type="checkbox" ref="meta_nsfw" name="nsfw" placeholder="Description of your content" /> Not Safe For Work</label>
            </div>
          </section>



          <section className="card">
            <h4>Additional Content Information (Optional)</h4>
            <div className="form-row">
              <label htmlFor="meta_thumbnail">Thumbnail URL</label> <FormField type="text" ref="meta_thumbnail" name="thumbnail" placeholder="http://mycompany.com/images/ep_1.jpg" />
            </div>
          </section>

          <div className="card-series-submit">
            <Link button="primary" label={!this.state.submitting ? 'Publish' : 'Publishing...'} onClick={this.handleSubmit} disabled={this.state.submitting} />
            <Link button="cancel" onClick={window.history.back} label="Cancel" />
            <input type="submit" className="hidden" />
          </div>
        </form>

        <Modal isOpen={this.state.modal == 'publishStarted'} contentLabel="File published"
               onConfirmed={this.handlePublishStartedConfirmed}>
          <p>Your file has been published to LBRY at the address <code>lbry://{this.state.name}</code>!</p>
          You will now be taken to your My Files page, where your newly published file will be listed. The file will take a few minutes to appear for other LBRY users; until then it will be listed as "pending."
        </Modal>
        <Modal isOpen={this.state.modal == 'error'} contentLabel="Error publishing file"
               onConfirmed={this.closeModal}>
          The following error occurred when attempting to publish your file: {this.state.errorMessage}
        </Modal>
      </main>
    );
  }
});

export default PublishPage;