package cache

import (
	"errors"

	"gitlab.sweetwater.com/it/devops/tools/gitlab-project-manager/internal/remotes/projects"
	"golang.org/x/exp/slices"
)

func (c *Cache) deleteAlias(alias *ProjectAlias) {
	for i, a := range c.Aliases {
		if a.Alias == alias.Alias {
			c.Aliases = append(c.Aliases[:i], c.Aliases[i+1:]...)
		}
	}
}

func (c *Cache) DeleteAlias(alias *ProjectAlias) {
	c.lock.Lock()
	defer c.lock.Unlock()
	c.deleteAlias(alias)
}

func (c *Cache) addAlias(alias string, projectID int, remote string) error {
	if c.GetAliasByName(alias) != nil {
		return errors.New("Failed to add alias, already exists")
	}

	c.Aliases = append(c.Aliases,
		&ProjectAlias{
			Alias:     alias,
			ProjectID: projectID,
			Remote:    remote,
		})

	return nil
}

func (c *Cache) AddAlias(alias string, projectID int, remote string) error {
	c.lock.Lock()
	defer c.lock.Unlock()
	return c.addAlias(alias, projectID, remote)
}

func (c *Cache) GetProjectsWithAliases() []*projects.Project {
	projectList := make([]*projects.Project, 0)
	projectsFound := make([]int, 0)
	for _, a := range c.Aliases {
		if !slices.Contains(projectsFound, a.ProjectID) {
			projectList = append(projectList, c.GetProjectByAlias(a))
			projectsFound = append(projectsFound, a.ProjectID)
		}
	}
	return projectList
}

// This method only exists if a cache was built
// before multi-remote support. Upon the first load
// with multi-remotes, this will be run first to update
// any missing alias remotes
func (c *Cache) setAliasRemotes() {
	for _, alias := range c.Aliases {
		if alias.Remote == "" {
			c.setAliasRemote(alias)
		}
	}
}

func (c *Cache) setAliasRemote(alias *ProjectAlias) {
	project := c.GetProjectByID(alias.ProjectID)
	if project != nil {
		alias.Remote = project.Remote
		c.log.Debug("Fixed missing alias remote", c.log.Args(
			"alias", alias.Alias,
			"projectID", alias.ProjectID,
			"remote", alias.Remote,
		))
	}
}