// Copyright 2018 Drone.IO Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package fixtures

import (
	"fmt"
	"net/http"

	"github.com/gin-gonic/gin"
)

// Handler returns an http.Handler that is capable of handling a variety of mock
// Bitbucket requests and returning mock responses.
func Handler() http.Handler {
	gin.SetMode(gin.TestMode)

	e := gin.New()
	e.POST("/site/oauth2/access_token", getOauth)
	e.GET("/2.0/user/workspaces/", getWorkspaces)
	e.GET("/2.0/repositories/:owner/:name", getRepo)
	e.GET("/2.0/repositories/:owner/:name/hooks", getRepoHooks)
	e.GET("/2.0/repositories/:owner/:name/src/:commit/:file", getRepoFile)
	e.DELETE("/2.0/repositories/:owner/:name/hooks/:hook", deleteRepoHook)
	e.POST("/2.0/repositories/:owner/:name/hooks", createRepoHook)
	e.POST("/2.0/repositories/:owner/:name/commit/:commit/statuses/build", createRepoStatus)
	e.GET("/2.0/repositories/:owner", getUserRepos)
	e.GET("/2.0/user/", getUser)
	e.GET("/2.0/user/emails", getEmails)
	e.GET("/2.0/user/workspaces/:workspace/permissions/repositories", getPermissions)
	e.GET("/2.0/repositories/:owner/:name/commits/:commit", getBranchHead)
	e.GET("/2.0/repositories/:owner/:name/pullrequests", getPullRequests)
	e.GET("/2.0/repositories/:owner/:name/diffstat/:commit", getCommitDiffstat)
	return e
}

func getCommitDiffstat(c *gin.Context) {
	c.String(http.StatusOK, diffStatPayload)
}

func getOauth(c *gin.Context) {
	if c.PostForm("error") == "invalid_scope" {
		c.String(http.StatusInternalServerError, "")
	}

	switch c.PostForm("code") {
	case "code_bad_request":
		c.String(http.StatusInternalServerError, "")
		return
	case "code_user_not_found":
		c.String(http.StatusOK, tokenNotFoundPayload)
		return
	}
	switch c.PostForm("refresh_token") {
	case "refresh_token_not_found":
		c.String(http.StatusNotFound, "")
	case "refresh_token_is_empty":
		c.Header("Content-Type", "application/json")
		c.String(http.StatusOK, "{}")
	default:
		c.Header("Content-Type", "application/json")
		c.String(http.StatusOK, tokenPayload)
	}
}

func getWorkspaces(c *gin.Context) {
	switch c.Request.Header.Get("Authorization") {
	case "Bearer teams_not_found", "Bearer c81e728d":
		c.String(http.StatusNotFound, "")
	default:
		if c.Query("page") == "" || c.Query("page") == "1" {
			c.String(http.StatusOK, workspacesPayload)
		} else {
			c.String(http.StatusOK, "{\"values\":[]}")
		}
	}
}

func getRepo(c *gin.Context) {
	switch c.Param("name") {
	case "not_found", "repo_unknown", "repo_not_found":
		c.String(http.StatusNotFound, "")
	case "permission_read", "permission_write", "permission_admin":
		c.String(http.StatusOK, fmt.Sprintf(permissionRepoPayload, c.Param("name")))
	case "{898477b2-a080-4089-b385-597a783db392}":
		c.String(http.StatusOK, repoPayloadFromHook)
	default:
		c.String(http.StatusOK, repoPayload)
	}
}

func getRepoHooks(c *gin.Context) {
	switch c.Param("name") {
	case "hooks_not_found", "repo_no_hooks":
		c.String(http.StatusNotFound, "")
	case "hook_empty":
		c.String(http.StatusOK, "{}")
	default:
		if c.Query("page") == "" || c.Query("page") == "1" {
			c.String(http.StatusOK, repoHookPayload)
		} else {
			c.String(http.StatusOK, "{\"values\":[]}")
		}
	}
}

func getRepoFile(c *gin.Context) {
	switch c.Param("file") {
	case "dir":
		c.String(http.StatusOK, repoDirPayload)
	case "dir_not_found":
		c.String(http.StatusNotFound, "")
	case "file_not_found":
		c.String(http.StatusNotFound, "")
	default:
		c.String(http.StatusOK, repoFilePayload)
	}
}

func getBranchHead(c *gin.Context) {
	switch c.Param("commit") {
	case "branch_name":
		c.String(http.StatusOK, branchCommitsPayload)
	default:
		c.String(http.StatusNotFound, "")
	}
}

func getPullRequests(c *gin.Context) {
	switch c.Param("name") {
	case "repo_name":
		c.String(http.StatusOK, pullRequestsPayload)
	default:
		c.String(http.StatusNotFound, "")
	}
}

func createRepoStatus(c *gin.Context) {
	switch c.Param("name") {
	case "repo_not_found":
		c.String(http.StatusNotFound, "")
	default:
		c.String(http.StatusOK, "")
	}
}

func createRepoHook(c *gin.Context) {
	c.String(http.StatusOK, "")
}

func deleteRepoHook(c *gin.Context) {
	switch c.Param("name") {
	case "hook_not_found":
		c.String(http.StatusNotFound, "")
	default:
		c.String(http.StatusOK, "")
	}
}

func getUser(c *gin.Context) {
	switch c.Request.Header.Get("Authorization") {
	case "Bearer user_not_found", "Bearer a87ff679":
		c.String(http.StatusNotFound, "")
	default:
		c.String(http.StatusOK, userPayload)
	}
}

func getEmails(c *gin.Context) {
	switch c.Request.Header.Get("Authorization") {
	case "Bearer user_not_found", "Bearer a87ff679":
		c.String(http.StatusNotFound, "")
	default:
		c.String(http.StatusOK, emailsPayload)
	}
}

func getUserRepos(c *gin.Context) {
	switch c.Request.Header.Get("Authorization") {
	case "Bearer repos_not_found", "Bearer 70efdf2e":
		c.String(http.StatusNotFound, "")
	default:
		if c.Query("page") == "" || c.Query("page") == "1" {
			c.String(http.StatusOK, userRepoPayload)
		} else {
			c.String(http.StatusOK, "{\"values\":[]}")
		}
	}
}

func getPermissions(c *gin.Context) {
	workspace := c.Param("workspace")
	q := c.Query("q")

	if c.Query("page") == "" || c.Query("page") == "1" {
		switch workspace {
		case "test_name":
			// Handle query for specific repo (new GetPermission format)
			if q == "repository.full_name=\"test_name/repo_name\"" {
				c.String(http.StatusOK, permissionPayLoad)
				return
			}
			// Handle listing all permissions (ListPermissionsAll)
			if q == "" {
				c.String(http.StatusOK, permissionsPayLoad)
				return
			}
		case "martinherren1984":
			// Handle hook test cases
			if q == "repository.full_name=\"martinherren1984/publictestrepo\"" {
				c.String(http.StatusOK, permissionHookPayLoad)
				return
			}
		}
	}

	c.String(http.StatusOK, "{\"values\":[]}")
}

const tokenPayload = `
{
	"access_token":"2YotnFZFEjr1zCsicMWpAA",
	"refresh_token":"tGzv3JOkF0XG5Qx2TlKWIA",
	"token_type":"Bearer",
	"expires_in":3600
}
`

const tokenNotFoundPayload = `
{
	"access_token":"user_not_found",
	"refresh_token":"user_not_found",
	"token_type":"Bearer",
	"expires_in":3600
}
`

const repoPayload = `
{
	"full_name": "test_name/repo_name",
	"scm": "git",
	"is_private": true
}
`

const permissionRepoPayload = `
{
	"full_name": "test_name/%s",
	"scm": "git",
	"is_private": true
}
`

const repoPayloadFromHook = `
{
	"type": "repository",
	"full_name": "martinherren1984/publictestrepo",
	"links": {
		"self": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo"
		},
		"html": {
			"href": "https://bitbucket.org/martinherren1984/publictestrepo"
		},
		"avatar": {
			"href": "https://bytebucket.org/ravatar/%7B898477b2-a080-4089-b385-597a783db392%7D?ts=default"
		},
		"pullrequests": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/pullrequests"
		},
		"commits": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/commits"
		},
		"forks": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/forks"
		},
		"watchers": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/watchers"
		},
		"branches": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/refs/branches"
		},
		"tags": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/refs/tags"
		},
		"downloads": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/downloads"
		},
		"source": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/src"
		},
		"clone": [
			{
				"name": "https",
				"href": "https://bitbucket.org/martinherren1984/publictestrepo.git"
			},
			{
				"name": "ssh",
				"href": "git@bitbucket.org:martinherren1984/publictestrepo.git"
			}
		],
		"hooks": {
			"href": "https://api.bitbucket.org/2.0/repositories/martinherren1984/publictestrepo/hooks"
		}
	},
	"name": "PublicTestRepo",
	"slug": "publictestrepo",
	"description": "",
	"scm": "git",
	"website": null,
	"owner": {
		"display_name": "Martin Herren",
		"links": {
			"self": {
				"href": "https://api.bitbucket.org/2.0/users/%7Bc5a0d676-fd27-4bd4-ac69-a7540d7b495b%7D"
			},
			"avatar": {
				"href": "https://secure.gravatar.com/avatar/37de364488b2ec474b5458ca86442bbb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FMH-2.png"
			},
			"html": {
				"href": "https://bitbucket.org/%7Bc5a0d676-fd27-4bd4-ac69-a7540d7b495b%7D/"
			}
		},
		"type": "user",
		"uuid": "{c5a0d676-fd27-4bd4-ac69-a7540d7b495b}",
		"account_id": "5cf8e3a9678ca90f8e7cc8a8",
		"nickname": "Martin Herren"
	},
	"workspace": {
		"type": "workspace",
		"uuid": "{c5a0d676-fd27-4bd4-ac69-a7540d7b495b}",
		"name": "Martin Herren",
		"slug": "martinherren1984",
		"links": {
			"avatar": {
				"href": "https://bitbucket.org/workspaces/martinherren1984/avatar/?ts=1658761964"
			},
			"html": {
				"href": "https://bitbucket.org/martinherren1984/"
			},
			"self": {
				"href": "https://api.bitbucket.org/2.0/workspaces/martinherren1984"
			}
		}
	},
	"is_private": false,
	"project": {
		"type": "project",
		"key": "PUB",
		"uuid": "{2cede481-f59e-49ec-88d0-a85629b7925d}",
		"name": "PublicTestProject",
		"links": {
			"self": {
				"href": "https://api.bitbucket.org/2.0/workspaces/martinherren1984/projects/PUB"
			},
			"html": {
				"href": "https://bitbucket.org/martinherren1984/workspace/projects/PUB"
			},
			"avatar": {
				"href": "https://bitbucket.org/martinherren1984/workspace/projects/PUB/avatar/32?ts=1658768453"
			}
		}
	},
	"fork_policy": "allow_forks",
	"created_on": "2022-07-25T17:01:20.950706+00:00",
	"updated_on": "2022-09-07T20:19:30.622886+00:00",
	"size": 85955,
	"language": "",
	"uuid": "{898477b2-a080-4089-b385-597a783db392}",
	"mainbranch": {
		"name": "master",
		"type": "branch"
	},
	"override_settings": {
		"default_merge_strategy": true,
		"branching_model": true
	},
	"parent": null,
	"enforced_signed_commits": null,
	"has_issues": false,
	"has_wiki": false
}
`

const repoHookPayload = `
{
	"pagelen": 10,
	"values": [
		{
			"uuid": "{afe61e14-2c5f-49e8-8b68-ad1fb55fc052}",
			"url": "http://127.0.0.1"
		}
	],
	"page": 1,
	"size": 1
}
`

const repoFilePayload = "dummy payload"

const repoDirPayload = `
{
		"pagelen": 10,
		"page": 1,
		"values": [
				{
						"path": "README.md",
						"type": "commit_file"
				},
				{
						"path": "test",
						"type": "commit_directory"
				},
				{
						"path": ".gitignore",
						"type": "commit_file"
				}
		]
}
`

const branchCommitsPayload = `
{
		"values": [
				{
						"hash": "branch_head_name",
						"links": {
							"html": {
								"href": "https://bitbucket.org/commitlink"
							}
						}
				},
				{
						"hash": "random1"
				},
				{
						"hash": "random2"
				}
		]
}
`

const pullRequestsPayload = `
{
		"values": [
				{
						"id": 123,
						"title": "PRs title"
				},
				{
						"id": 456,
						"title": "Another PRs title"
				}
		],
		"pagelen": 10,
		"size": 2,
		"page": 1
}
`

const diffStatPayload = `
{
		"values": [
				{
						"old": {
								"path": "main.go"
						},
						"new": {
								"path": "main.go"
						}
				}
		]
}
`

const userPayload = `
{
	"uuid": "{4d8c0f46-cd62-4b77-b0cf-faa3e4d932c6}",
	"username": "superman",
	"links": {
		"avatar": {
			"href": "http:\/\/i.imgur.com\/ZygP55A.jpg"
		}
	},
	"type": "user"
}
`

const userRepoPayload = `
{
	"page": 1,
	"pagelen": 10,
	"size": 1,
	"values": [
		{
			"links": {
				"avatar": {
						"href": "http:\/\/i.imgur.com\/ZygP55A.jpg"
				}
			},
			"full_name": "test_name/repo_name",
			"scm": "git",
			"is_private": true
		}
	]
}
`

const emailsPayload = `
{
  "pagelen": 10,
  "values": [
    {
      "email": "test@example.com",
      "is_confirmed": true,
      "is_primary": true
  	}
  ],
  "page": 1,
  "size": 1
}
`

const workspacesPayload = `
{
	"page": 1,
	"pagelen": 100,
	"size": 1,
	"values": [
		{
			"type": "workspace_access",
			"administrator": true,
			"workspace": {
				"type": "workspace_base",
				"uuid": "{c7a04a76-fa20-43e4-dc42-a7506db4c95b}",
				"slug": "test_name",
				"links": {
					"avatar": {
						"href": "https://bitbucket.org/workspaces/ueberdev42/avatar/?ts=1658761964"
					},
					"self": {
						"href": "https://api.bitbucket.org/2.0/workspaces/ueberdev42"
					}
				}
			}
		}
	]
}
`

const permissionsPayLoad = `
{
	"pagelen": 100,
	"page": 1,
	"values": [
		{
			"repository": {
				"full_name": "test_name/repo_name"
			},
			"permission": "read"
		},
		{
			"repository": {
				"full_name": "test_name/permission_read"
			},
			"permission": "read"
		},
		{
			"repository": {
				"full_name": "test_name/permission_write"
			},
			"permission": "write"
		},
		{
			"repository": {
				"full_name": "test_name/permission_admin"
			},
			"permission": "admin"
		}
	]
}
`

const permissionPayLoad = `
{
	"pagelen": 100,
	"page": 1,
	"values": [
		{
			"repository": {
				"full_name": "test_name/repo_name"
			},
			"permission": "read"
		}
	]
}
`

const permissionHookPayLoad = `
{
	"pagelen": 100,
	"page": 1,
	"values": [
		{
			"repository": {
				"full_name": "martinherren1984/publictestrepo"
			},
			"permission": "admin"
		}
	]
}
`