/**
 * icon repo Controller
 *
 */
let config = require("../config/config");
let constant = require("../config/constant");
let responseFormat = require("../util/responseFormat");
let repoInfoRules = require("../validation/repoInfoRules");
let validator = require("../util/validator");
let db = require("../database");
let log = require("../util/log");
let path = require("path");
let fileUtil = require("../util/fileUtil");
let incUtil = require("../util/incUtil");
let icon = require("../tool/icon");
let svgSprite = require("../tool/svgSprite");
let uploadService = require("../service/upload");

class RepoController {
  /**
   * add icon repo
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async addRepo(ctx) {
    let params = ctx.request.body || {};
    let userInfo = ctx.userInfo;

    // validate completely
    validator.validateParamsField(params, repoInfoRules, ctx);

    // validate unique
    await this.iconRepoExist(params, userInfo);

    // get increment repoId
    let repoId = await incUtil.getIncId({ model: "iconRepo", field: "repoId" });

    // build repo data
    Object.assign(params, {
      createTime: global.globalConfig.nowTime,
      updateTime: global.globalConfig.nowTime,
      ownerId: userInfo.userId,
      repoId: repoId,
    });
    log.debug(`add repo data: ${JSON.stringify(params)}`);

    // save icon repo data to database
    await db.iconRepo.add(params);

    // add repoId to owner repos field
    await db.user.update(
      {
        userId: userInfo.userId,
      },
      {
        $push: {
          repos: {
            repoId: repoId,
            repoName: params.repoName,
          },
        },
      }
    );

    ctx.body = responseFormat.responseFormat(200, "save success!", true);
  }

  /**
   * add icon repo
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async updateRepoInfo(ctx) {
    let data = ctx.request.body || {};
    let params = ctx.params;
    let userInfo = ctx.userInfo;

    // validate completely
    validator.validateParamsField(params, repoInfoRules, ctx);

    // validate privilege, only owner
    let repoItem = await db.iconRepo.findOne({
      ownerId: userInfo.userId,
      repoId: params.repoId,
    });

    if (!repoItem) {
      throw new Error("no privilege!");
    }

    // validate unique
    // await this.iconRepoExist(data, userInfo);

    // build repo data
    data = Object.assign(repoItem, data, {
      updateTime: global.globalConfig.nowTime,
      ownerId: userInfo.userId,
      unSync: true,
      repoId: parseInt(params.repoId),
    });
    log.debug(
      `user ${userInfo.userId} update repo data: ${JSON.stringify(params)}`
    );

    // update icon repo data to database
    await db.iconRepo.update({ repoId: params.repoId }, data);

    // add repoId to owner repos field, todo
    // await db.user.update({
    //     userId: userInfo.userId
    // }, {
    //     "$set": {
    //         "repos.$[element]": {
    //             repoId: params.repoId,
    //             repoName: data.repoName
    //         }
    //     }
    // }, {
    //     arrayFilters: [{
    //         repoId: params.repoId,
    //         repoName: repoItem.repoName
    //     }]
    // });

    ctx.body = responseFormat.responseFormat(200, "save success!", true);
  }

  /**
   * get repo list
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async getRepoList(ctx) {
    let params = ctx.params;
    let query = ctx.request.query || {};
    let repoList = [];

    if (parseInt(params.userId)) {
      repoList = await this.getRepoListByUserId(params, query, ctx);
    } else {
      repoList = await this.getAllRepoList(query);
    }
    ctx.body = responseFormat.responseFormatList(200, "", repoList, query);
  }

  /**
   * get all repo list
   *
   * @param    {Object}           query                   pagination object
   * @return   {void}
   */
  async getAllRepoList(query) {
    let result = await db.iconRepo.find(
      {},
      global.globalConfig.iconRepoExportFields,
      {
        limit: parseInt(query.pageSize),
        skip: parseInt((query.pageIndex - 1) * query.pageSize),
      }
    );
    query.totalCount = await db.iconRepo.count({});
    log.debug(`get all repos and count: ${query.totalCount}`);
    // traverse repo list for finding icon that belong to repo
    for (let i = 0; i < (result || []).length; i++) {
      result[i].icons = [];
      result[i].iconCount = (result[i].iconIds || []).length;
      for (
        let j = 0;
        j <
        Math.min(
          result[i].iconIds.length,
          constant.REPO_LIST_CONTAIN_ICON_COUNT_PER_REPO
        );
        j++
      ) {
        let iconItem = await db.icon.findOne(
          {
            iconId: result[i].iconIds[j].iconId,
          },
          global.globalConfig.iconExportFields
        );
        result[i].icons.push(iconItem || {});
      }
    }
    return result;
  }

  /**
   * get repo list of specific user
   *
   * @param    {Object}           params                  query object of url
   * @param    {Object}           query                   pagination object
   * @return   {void}
   */
  async getRepoListByUserId(params, query) {
    let userItem = await db.user.findOne({
      userId: params.userId,
    });

    query.totalCount = userItem.repos.length;
    log.debug(
      `get user ${params.userId} repo list and count: ${query.totalCount}`
    );
    let repoList = [];
    for (
      let r = (query.pageIndex - 1) * query.pageSize;
      r < Math.min(query.pageIndex * query.pageSize, userItem.repos.length);
      r++
    ) {
      let repoItem = await db.iconRepo.findOne(
        {
          repoId: userItem.repos[r].repoId,
        },
        global.globalConfig.iconRepoExportFields
      );

      // traverse repo list for finding icon that belong to repo
      repoItem.icons = [];
      repoItem.iconCount = (repoItem.iconIds || []).length;
      for (
        let j = 0;
        j <
        Math.min(
          repoItem.iconIds.length,
          constant.REPO_LIST_CONTAIN_ICON_COUNT_PER_REPO
        );
        j++
      ) {
        let iconItem = await db.icon.findOne(
          {
            iconId: repoItem.iconIds[j].iconId,
          },
          global.globalConfig.iconExportFields
        );
        repoItem.icons.push(iconItem || {});
      }
      repoList.push(repoItem);
    }
    return repoList;
  }

  /**
   * get repo info
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async getRepoInfo(ctx) {
    let userInfo = ctx.userInfo;
    let params = ctx.params;
    // find info first
    let result = await db.iconRepo.findOne({
      repoId: params.repoId,
    });
    // pre login
    if (userInfo.userId) {
      // check user has repoId in repos field
      let userItem = await db.user.findOne({
        userId: userInfo.userId,
      });
      // isMember if exist repoId
      userItem.repos.forEach((item) => {
        if (item.repoId === parseInt(params.repoId)) {
          result.isMember = true;
        }
      });
      // is owner if repo's ownerId equal to userId
      if (result.ownerId === userInfo.userId) {
        result.isOwner = true;
      }
    }

    ctx.body = responseFormat.responseFormat(200, "", result);
  }

  /**
   * get repo css or svg resource
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async getRepoResource(ctx) {
    let params = ctx.params;
    let type = (ctx.request.query || {}).type;
    // find info first
    let repoItem = await db.iconRepo.findOne({
      repoId: params.repoId,
    });
    // pre login
    let result = null;
    if (repoItem) {
      // type can be cssUrl or cssContent
      if (repoItem[type]) {
        result = repoItem[type];
      } else {
        let iconIds = await this.getRepoIconIds(repoItem.repoId);
        result = [];
        for (let iconId of iconIds) {
          let iconItem = await db.icon.findOne({ iconId: iconId });
          result.push({
            iconId: iconItem.iconId,
            iconContent: iconItem.iconContent,
            iconName: iconItem.iconName,
          });
        }
      }
    }

    ctx.body = responseFormat.responseFormat(200, "", result);
  }

  /**
   * get iconIds that belong to repo
   *
   * @param    {Number}           repoId                  repoId
   * @return   {Array}                                    all iconIds that belong to repo
   */
  async getRepoIconIds(repoId) {
    let iconRepoItem = await db.iconRepo.findOne({
      repoId: repoId,
    });
    let iconIds = [];
    iconRepoItem.iconIds.map((icon) => {
      iconIds.push(icon.iconId);
    });
    return iconIds;
  }

  /**
   * add iconId to repo's iconIds field
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async addIcon2Repo(ctx) {
    let params = ctx.request.body || {};
    let userInfo = ctx.userInfo;

    // judge unique from upload icons
    let tmpMap = {};
    for (let icon of params.icons) {
      if (tmpMap[icon.iconName]) {
        throw new Error(`upload repeat icon ${icon.iconName}`);
      }
      tmpMap[icon.iconName] = true;
    }

    // has privilege or not
    let userItem = await db.user.findOne({
      userId: userInfo.userId,
    });
    if (!userItem || !this.hasRepo(userItem.repos, params.repoId)) {
      throw new Error("no privilege!");
    }
    let repoItem = await db.iconRepo.findOne({
      repoId: params.repoId,
    });
    // judge unique to avoid repeat between upload and database
    for (let icon of params.icons) {
      for (let existIcon of repoItem.iconIds) {
        if (
          icon.iconId === existIcon.iconId ||
          icon.iconName === existIcon.iconName
        ) {
          throw new Error(
            `repo ${repoItem.repoName} has contain icon ${icon.iconName}`
          );
        }
      }
    }
    // add many icon one times, need to traverse
    for (let icon of params.icons) {
      await db.iconRepo.update(
        {
          repoId: params.repoId,
        },
        {
          $push: {
            iconIds: {
              iconId: icon.iconId,
              iconName: icon.iconName,
            },
          },
          unSync: true,
        }
      );
      log.debug(
        `user ${userInfo.userId} add icon ${icon.iconId}-${icon.iconName} to repo ${params.repoId}`
      );

      await db.iconBelongToRepo.update(
        {
          iconId: icon.iconId,
        },
        {
          iconId: icon.iconId,
          iconName: icon.iconName,
          $push: {
            repos: {
              repoId: repoItem.repoId,
              repoName: repoItem.repoName,
            },
          },
        },
        {
          upsert: true,
        }
      );
    }

    ctx.body = responseFormat.responseFormat(200, "add success!", true);
  }

  /**
   * is member or master of repoId
   *
   * @param    {Array}            repos                       repo array
   * @param    {Number}           repoId                      repo id
   * @return   {void}
   */
  hasRepo(repos = [], repoId) {
    for (let repo of repos) {
      if (repo.repoId === parseInt(repoId)) {
        return true;
      }
    }
    return false;
  }

  /**
   * delete iconId from repo
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async deleteIconFromRepo(ctx) {
    let params = ctx.params || {};
    let userInfo = ctx.userInfo;
    let isMember = false;

    // check user has repoId in repos field
    let userItem = await db.user.findOne({
      userId: userInfo.userId,
    });
    // isMember if exist repoId
    userItem.repos.forEach((item) => {
      if (item.repoId === params.repoId) {
        isMember = true;
      }
    });

    if (!isMember) {
      ctx.body = responseFormat.responseFormat(403, "no privilege!", false);
    }

    await db.iconRepo.update(
      {
        repoId: params.repoId,
      },
      {
        $pull: {
          iconIds: {
            iconId: params.iconId,
          },
        },
        unSync: true,
      }
    );
    // remove relationship for delete operation
    await db.iconBelongToRepo.update(
      {
        iconId: params.iconId,
      },
      {
        $pull: {
          repos: {
            repoId: params.repoId,
          },
        },
      }
    );

    // remove svg file from resource
    let repoItem = await db.iconRepo.findOne({
      repoId: params.repoId,
    });
    let iconItem = await db.icon.findOne({
      iconId: params.iconId,
    });
    let iconPath = path.resolve(
      __dirname,
      `../../public/resource/repository/${repoItem.ownerId}-${repoItem.iconPrefix}/svg/${iconItem.iconName}.svg`
    );
    await fileUtil.deleteFile(iconPath);
    log.debug(
      `user ${userInfo.userId} delete icon ${params.iconId} from repo ${params.repoId}`
    );

    ctx.body = responseFormat.responseFormat(200, "delete success!", true);
  }

  /**
   * sync database and generate css files
   *
   * @param    {Object}           ctx                         request object
   * @return   {void}
   */
  async syncRepo(ctx) {
    let params = ctx.params;
    let userInfo = ctx.userInfo;
    let isRepoMember = false;

    // judge privilege
    let userItem = await db.user.findOne({
      userId: userInfo.userId,
    });
    userItem.repos.map((item) => {
      if (item.userId === params.userId) {
        isRepoMember = true;
      }
    });
    if (!isRepoMember) {
      ctx.body = responseFormat.responseFormat(403, "no privilege!", false);
      return;
    }

    let repoItem = await db.iconRepo.findOne({
      repoId: params.repoId,
    });
    // judge update or not
    if (repoItem.unSync) {
      let repoPath = path.join(
        config.rootRepoPath,
        `./${repoItem.ownerId}-${repoItem.iconPrefix}`
      );
      // clean all svg for avoid cache or change iconPrefix, maintain if default
      // if (config.productType === 'default') {
      //     await fileUtil.deleteDirector(repoPath);
      // }
      let repoSvgPath = path.join(repoPath, "./svg/");
      let repoIcons = [];
      await fileUtil.createDirector(repoSvgPath);

      // create svg file recursive
      for (let k = 0; k < repoItem.iconIds.length; k++) {
        let iconItem =
          (await db.icon.findOne({
            iconId: repoItem.iconIds[k].iconId,
          })) || {};
        repoIcons.push(iconItem);
        await fileUtil.createFile(
          path.join(repoSvgPath, iconItem.iconName + ".svg"),
          iconItem.iconContent
        );
      }
      let uploadResult = {};
      let svgSpriteResult = "";
      // must has svg
      if (repoItem.iconIds.length > 0) {
        await icon.compileSvg2Icon(
          repoPath,
          repoItem.iconPrefix,
          repoItem.fontPath
        );
        // output to server and return css url and css content
        uploadResult = await uploadService.upload(repoPath);

        // svg sprite
        svgSpriteResult = svgSprite(repoItem.iconPrefix, repoIcons);
      } else {
        uploadResult = { url: "", cssContent: "" };
        svgSpriteResult = "";
      }
      // update sync status
      await db.iconRepo.update(
        {
          repoId: params.repoId,
        },
        {
          unSync: false,
          cssUrl: uploadResult.url,
          cssContent: uploadResult.cssContent,
          svgSpriteContent: svgSpriteResult,
        }
      );
      log.debug(`user ${userInfo.userId} sync repo ${params.repoId} success`);

      // clean all svg for avoid cache or change iconPrefix, delete if access thirdly upload
      // if (config.productType !== 'default') {
      //     await fileUtil.deleteDirector(repoPath);
      // }
      ctx.body = responseFormat.responseFormat(
        200,
        "update success!",
        uploadResult
      );
      return;
    }

    ctx.body = responseFormat.responseFormat(200, "update success!", true);
  }

  /**
   * judge repo already exist
   *
   * @param    {Object}           params                      post request object
   * @param    {Object}           userInfo                    userInfo
   * @return   {void}
   */
  async iconRepoExist(params, userInfo) {
    let iconLibItem = await db.iconRepo.findOne({
      iconPrefix: params.iconPrefix,
      ownerId: userInfo.userId,
    });

    if (iconLibItem) {
      throw new Error(`${params.iconPrefix} already exist！`);
    }
  }

  /**
   * add member of repo
   *
   * @param    {Object}           ctx                         request object
   * @return   {void}
   */
  async addMember(ctx) {
    let params = ctx.params;
    let userInfo = ctx.userInfo;
    let data = ctx.request.body || {};

    // only master can add member
    let repo = await db.iconRepo.findOne({
      ownerId: userInfo.userId,
      repoId: params.repoId,
    });
    if (!repo) {
      ctx.body = responseFormat.responseFormat(403, "no privilege！", false);
      return;
    }
    // user exist
    let user = null;
    if (parseInt(data.accountType) === constant.MEMBER_ACCOUNT_TYPE_USER_ID) {
      user = await db.user.findOne({
        userId: data.account,
      });
    } else {
      user = await db.user.findOne({
        userName: data.account,
      });
    }
    if (!user) {
      ctx.body = responseFormat.responseFormat(
        200,
        "user not exist, make sure has login the site",
        false
      );
      return;
    }
    // add member of repo
    await db.user.update(
      {
        userId: user.userId,
      },
      {
        $push: {
          repos: {
            repoId: repo.repoId,
            repoName: repo.repoName,
          },
        },
      }
    );
    log.debug(
      `user ${userInfo.userId} add member ${user.userId} of repo ${repo.repoId}`
    );
    ctx.body = responseFormat.responseFormat(200, "添加成功！", true);
  }

  /**
   * get recommend repo list
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async getRecommendRepoList(ctx) {
    let recommendRepos = await db.repoRecommend.find({});
    let result = [];
    let query = ctx.request.query || {};
    // find all recommend repo
    for (let repo of recommendRepos) {
      let repoItem = await db.iconRepo.findOne(
        {
          repoId: repo.repoId,
        },
        global.globalConfig.iconRepoExportFields,
        {
          lean: true,
        }
      );
      // traverse repo list for finding icon that belong to repo
      repoItem.icons = [];
      repoItem.iconCount = (repoItem.iconIds || []).length;
      for (let icon of repoItem.iconIds) {
        if (
          repoItem.icons.length >=
          constant.REPO_LIST_CONTAIN_ICON_COUNT_PER_REPO
        ) {
          break;
        }
        let iconItem =
          (await db.icon.findOne(
            {
              iconId: icon.iconId,
            },
            global.globalConfig.iconExportFields
          )) || {};
        repoItem.icons.push(iconItem);
      }
      result.push(repoItem);
    }

    ctx.body = responseFormat.responseFormatList(200, "", result, query);
  }

  /**
   * add recommend repo
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async addRecommendRepo(ctx) {
    let params = ctx.request.body || {};
    if (params.key === config.salt) {
      for (let item of params.repos) {
        let repo = await db.iconRepo.findOne({
          repoId: item.repoId,
        });
        if (repo) {
          // get increment repoId
          let id = await incUtil.getIncId({
            model: "repoRecommend",
            field: "id",
          });
          await db.repoRecommend.add({
            id: id,
            repoId: repo.repoId,
          });
        }
      }
    }

    ctx.body = responseFormat.responseFormat(200, "save success!", true);
  }

  /**
   * add recommend repo
   *
   * @param    {Object}           ctx                     request object
   * @return   {void}
   */
  async deleteRecommendRepo(ctx) {
    let params = ctx.request.body || {};

    if (params.key === config.salt) {
      for (let item of params.repos) {
        await db.repoRecommend.delete({
          repoId: item.repoId,
        });
      }
    }

    ctx.body = responseFormat.responseFormat(200, "delete success!", true);
  }
}

module.exports = RepoController;