Refactor context out of API packages (#8755)

* Refactor context out of API packages

* Update function names per feedback

* Move webhook handlers to web and fix web tests

* Move more webhook tests out of api package

* Fix static handler

web/params.go

@@ -0,0 +1,197 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package web
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gorilla/mux"
+)
+
+const (
+	PAGE_DEFAULT          = 0
+	PER_PAGE_DEFAULT      = 60
+	PER_PAGE_MAXIMUM      = 200
+	LOGS_PER_PAGE_DEFAULT = 10000
+	LOGS_PER_PAGE_MAXIMUM = 10000
+)
+
+type Params struct {
+	UserId         string
+	TeamId         string
+	InviteId       string
+	TokenId        string
+	ChannelId      string
+	PostId         string
+	FileId         string
+	Filename       string
+	PluginId       string
+	CommandId      string
+	HookId         string
+	ReportId       string
+	EmojiId        string
+	AppId          string
+	Email          string
+	Username       string
+	TeamName       string
+	ChannelName    string
+	PreferenceName string
+	EmojiName      string
+	Category       string
+	Service        string
+	JobId          string
+	JobType        string
+	ActionId       string
+	RoleId         string
+	RoleName       string
+	Page           int
+	PerPage        int
+	LogsPerPage    int
+	Permanent      bool
+}
+
+func ParamsFromRequest(r *http.Request) *Params {
+	params := &Params{}
+
+	props := mux.Vars(r)
+	query := r.URL.Query()
+
+	if val, ok := props["user_id"]; ok {
+		params.UserId = val
+	}
+
+	if val, ok := props["team_id"]; ok {
+		params.TeamId = val
+	}
+
+	if val, ok := props["invite_id"]; ok {
+		params.InviteId = val
+	}
+
+	if val, ok := props["token_id"]; ok {
+		params.TokenId = val
+	}
+
+	if val, ok := props["channel_id"]; ok {
+		params.ChannelId = val
+	} else {
+		params.ChannelId = query.Get("channel_id")
+	}
+
+	if val, ok := props["post_id"]; ok {
+		params.PostId = val
+	}
+
+	if val, ok := props["file_id"]; ok {
+		params.FileId = val
+	}
+
+	params.Filename = query.Get("filename")
+
+	if val, ok := props["plugin_id"]; ok {
+		params.PluginId = val
+	}
+
+	if val, ok := props["command_id"]; ok {
+		params.CommandId = val
+	}
+
+	if val, ok := props["hook_id"]; ok {
+		params.HookId = val
+	}
+
+	if val, ok := props["report_id"]; ok {
+		params.ReportId = val
+	}
+
+	if val, ok := props["emoji_id"]; ok {
+		params.EmojiId = val
+	}
+
+	if val, ok := props["app_id"]; ok {
+		params.AppId = val
+	}
+
+	if val, ok := props["email"]; ok {
+		params.Email = val
+	}
+
+	if val, ok := props["username"]; ok {
+		params.Username = val
+	}
+
+	if val, ok := props["team_name"]; ok {
+		params.TeamName = strings.ToLower(val)
+	}
+
+	if val, ok := props["channel_name"]; ok {
+		params.ChannelName = strings.ToLower(val)
+	}
+
+	if val, ok := props["category"]; ok {
+		params.Category = val
+	}
+
+	if val, ok := props["service"]; ok {
+		params.Service = val
+	}
+
+	if val, ok := props["preference_name"]; ok {
+		params.PreferenceName = val
+	}
+
+	if val, ok := props["emoji_name"]; ok {
+		params.EmojiName = val
+	}
+
+	if val, ok := props["job_id"]; ok {
+		params.JobId = val
+	}
+
+	if val, ok := props["job_type"]; ok {
+		params.JobType = val
+	}
+
+	if val, ok := props["action_id"]; ok {
+		params.ActionId = val
+	}
+
+	if val, ok := props["role_id"]; ok {
+		params.RoleId = val
+	}
+
+	if val, ok := props["role_name"]; ok {
+		params.RoleName = val
+	}
+
+	if val, err := strconv.Atoi(query.Get("page")); err != nil || val < 0 {
+		params.Page = PAGE_DEFAULT
+	} else {
+		params.Page = val
+	}
+
+	if val, err := strconv.ParseBool(query.Get("permanent")); err != nil {
+		params.Permanent = val
+	}
+
+	if val, err := strconv.Atoi(query.Get("per_page")); err != nil || val < 0 {
+		params.PerPage = PER_PAGE_DEFAULT
+	} else if val > PER_PAGE_MAXIMUM {
+		params.PerPage = PER_PAGE_MAXIMUM
+	} else {
+		params.PerPage = val
+	}
+
+	if val, err := strconv.Atoi(query.Get("logs_per_page")); err != nil || val < 0 {
+		params.LogsPerPage = LOGS_PER_PAGE_DEFAULT
+	} else if val > LOGS_PER_PAGE_MAXIMUM {
+		params.LogsPerPage = LOGS_PER_PAGE_MAXIMUM
+	} else {
+		params.LogsPerPage = val
+	}
+
+	return params
+}