67 lines
2.1 KiB
Go
67 lines
2.1 KiB
Go
package auth
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import (
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"database/sql"
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"net/http"
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"git.beisel.it/florian/hostname-service/db"
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"git.beisel.it/florian/hostname-service/models"
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"golang.org/x/crypto/bcrypt"
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"github.com/gin-gonic/gin"
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)
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// LoginHandler godoc
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//
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// @Summary User login
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// @Description Authenticate user and return JWT token
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// @Tags Authentication
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// @Accept json
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// @Produce json
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// @Param loginCredentials body models.LoginCredentials true "Login Credentials"
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// @Success 200 {object} models.TokenResponse "Successfully authenticated, JWT token returned"
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// @Failure 400 {object} models.ErrorResponse "Invalid request body"
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// @Failure 401 {object} models.ErrorResponse "Invalid login credentials"
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// @Failure 500 {object} models.ErrorResponse "Internal server error"
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// @Router /login [post]
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func LoginHandler(c *gin.Context) {
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var creds models.LoginCredentials
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// Bind JSON to creds
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if err := c.BindJSON(&creds); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body"})
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return
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}
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// Fetch user from the database
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var storedCreds models.User
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err := db.DB.QueryRow("SELECT username, password FROM users WHERE username = ?", creds.Username).Scan(&storedCreds.Username, &storedCreds.Password)
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if err != nil {
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if err == sql.ErrNoRows {
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// User not found
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c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid login credentials"})
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return
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}
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// Other errors
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c.JSON(http.StatusInternalServerError, gin.H{"error": "Internal server error"})
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return
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}
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// Compare provided password with stored hashed password
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if err := bcrypt.CompareHashAndPassword([]byte(storedCreds.Password), []byte(creds.Password)); err != nil {
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// Password does not match
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c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid login credentials"})
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return
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}
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// If password matches, generate a JWT token
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token, err := GenerateToken(storedCreds.Username)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to generate token"})
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return
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}
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// Send the token in the response
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c.JSON(http.StatusOK, gin.H{"token": token})
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}
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